Search History * #46 Strongylocentrotus droebachiensis and (English in la) (241 records) #45 stronglyocentrotus oregonensus and (English in la) (0 records) #44 squalus acanthias and (English in la) (551 records) #43 Eumicrothemis orbis and (English in la) (0 records) #42 Sebastes nebulosus and (English in la) (6 records) #41 Sebastes auriculatus and (English in la) (7 records) #40 Sebastes caurinus and (English in la) (16 records) #39 Cryptochiton stelleri and (English in la) (13 records) #38 Strongylocentrotus purpuratus and (English in la) (522 records) #37 Pycnopodia helianthoides and (English in la) (29 records) #36 pisaster ochraceus and (English in la) (70 records) #35 pisaster ocraceas and (English in la) (0 records) #34 pisaster ocraceas and (English in la) (0 records) #33 pisaster brevispinus and (English in la) (10 records) #32 navanax and (English in la) (14 records) #31 cancer magister and (English in la) (311 records) #30 cancer gracilis and (English in la) (7 records) #29 cancer productus and (English in la) (45 records) #28 Anarrichthys ocellatus and (English in la) (0 records) #27 Anarrichthys ocellatus and (English in la) (0 records) #26 A. ocellatus and (English in la) (6 records) #25 ocellatus and (English in la) (603 records) #24 anarrichtys ocellatus and (English in la) (0 records) #23 anarrichthys ocellatus and (English in la) (0 records) #22 archidoris odhneri and (English in la) (1 record) #21 artedius harringtoni and (English in la) (1 record) #20 chirolophis nugator and (English in la) (0 records) #19 chirolophis nugator and (English in la) (0 records) #18 chitonotus pugetensis and (English in la) (3 records) #17 chlamys rubida and (English in la) (19 records) #16 fimbriatus and (English in la) (91 records) #15 pachyceriant fimbriatus (0 records) #14 polinices lewisii and (English in la) (9 records) #13 tritonia diomedea and (English in la) (33 records) #12 triopha catalinae and (English in la) (1 record) #11 stomphia didemon and (English in la) (2 records) #10 solaster stimpsoni and (English in la) (3 records) #9 solaster simpsoni and (English in la) (0 records) #8 solaster simpsoni and (English in la) (0 records) #7 solaster simpsonii and (English in la) (0 records) #6 octopus rubescens and (English in la) (11 records) #5 metridium senile and (English in la) (84 records) #4 dirona albolineata and (English in la) (1 record) #3 rossia pacifica and (English in la) (9 records) #2 hydrolagus colliei and (English in la) (33 records) #1 ((rossia pacifica) in TI) and (English in la) (6 records) Record 1 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Walking versus breathing: mechanical differentiation of sea urchin podia corresponds to functional specialization AUTHOR(S): Leddy,-H.A.; Johnson,-A.S. AUTHOR AFFILIATION: Biology Department, Bowdoin College, Brunswick, Maine 04011, USA SOURCE (BIBLIOGRAPHIC CITATION): Biological-Bulletin,-Marine-Biological-Laboratory,-Woods-Hole [Biol-Bull -Mar-Biol-Lab-Woods-Hole] 2000 vol. 198, no. 1, pp. 88-93 INTERNATIONAL STANDARD NUMBERS: ISSN 0006-3185 PUBLICATION YEAR: 2000 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The podia of sea urchins function in locomotion, adhesion, feeding, and respiration; but different podia on a single urchin are often specialized to one or more of these tasks. We examined the morphology and material properties of podia of the green sea urchin, Strongylocentrotus droebachiensis, to determine whether, despite apparent similarities, they achieve functional specialization along the oral-aboral axis through the differentiation of distinct mechanical properties. We found that oral podia, which are used primarily for locomotion and adhesion, are stronger and thicker than aboral podia, which are used primarily for capturing drift material and as a respiratory surface. The functional role of ambital podia is more ambiguous; however, they are longer and are extended at a lower strain rate than other podial types. They are also stronger and stiffer than aboral podia. In addition, all podia become stronger and stiffer when extended at faster strain rates, in some cases by nearly an order of magnitude for an order of magnitude change in strain rate. This strain-rate dependence implies that resistance to rapid loading such as that imposed by waves is high compared to resistance to slower, self -imposed loads. Thus, the serially arranged podia of S. droebachiensis are functionally specialized along an oral-aboral axis by differences in their morphology and mechanical properties. DESCRIPTORS: Locomotion-; Respiratory-system; Evolution-; Animal-morphology; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Invertebrate-biology:-Taxonomy-and-morphology-1243 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS0016550 ACCESSION NUMBER: 4694420 UPDATE CODE: 200012 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2046829 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=21371 -- LIB HAS: Feb.1994- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Fish-Ocean Stacks -- Call number: 570.5 BB - - LIB HAS: v.86- (1944-) -- Latest issues on Display Location: FriHarbor Periodicals -- Shelved by title: Biological Bulletin -- Call number: 570.5 BB -- LIB HAS: v.32-41, 43- (1917-) Location: NatSci Periodicals -- Call number: 570.5 BB -- LIB HAS: v.1- (1899-) -- LATEST ISSUES ON DISPLAY Location: Tacoma Microforms -- Call number: Microfilm TAC-423 - - LIB HAS: v.178-195 (1990-1998) Location: Tacoma Periodicals -- Call number: QH301 .B38 -- LIB HAS: v.196 no.2- (Apr. 1999-) Record 2 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): The impact of scallop drags on sea urchin populations and benthos in the Bay of Fundy, New Brunswick, Canada AUTHOR(S): Robinson,-S.M.C.; Bernier,-S.; MacIntyre,-A. AUTHOR AFFILIATION: Bological Station, Dept, Fisheries and Oceans, St. Andrews, New Brunswick, EOG-2XO, Canada CONFERENCE INFORMATION: 3. International Conference on Shellfish Restoration, Cork, County Cork (Ireland), 28 Sep-2 Oct 1999 SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Shellfish-Research 1999 vol. 18, no. 2, p. 727 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The fishery for the green sea urchin (Strongylocentrotus droebachiensis) began in New Brunswick in the late 1980's in response to increasing demand from Asian markets. Fishing was initiated by members of the scallop fishery and the harvesting practices were based on familiar gear and similar operations in Maine. Because of the potential harvesting impact on the shallow water benthic populations a study was initiated in 1993 to document 1) the proportion of sea urchins damaged during the harvesting operation, 2) the impact n and subsequent recovery time of the associated benthic flora and fauna and 3) the impacts on the bottom substrate. Two representative sites were chosen for the study. At each site, a towing lane was created parallel to shore and divided into a treatment section and control section. Divers used a fixed line transect method to survey the control and treatment plots prior to and after the harvesting operation (2 m Digby drag). Further surveys were scheduled three and six months later. The results from the study showed a significant increase in the number of broken sea urchin tests after the harvesting operation from 0.05 m super(2-) to 1.4 m super(2-) at the Passamaquoddy Bay site. Similar trends were found in Grand Manan. On both sites in the experimental plot, there was an increase in the density of mobile predators such as hermit crabs, starfish, whelks and sculpins. While the lobster density declined to zero in the experimental plot, the lack of body parts suggested they moved out of the area. The dragging operation also adversely affected a number of macrophytes. DESCRIPTORS: Environmental-impact; Benthos-; Dredges-; Strongylocentrotus -droebachiensis; ANW,-Canada,-New-Brunswick,-Fundy-Bay CLASSIFICATIONS: Aquatic-communities:-Plankton-1461; Environmental-quality:-Mechanical-and -natural-changes-1521 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-3:-Aquatic -Pollution-and-Environmental-Quality (Q5) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS0012924 ACCESSION NUMBER: 4708768 UPDATE CODE: 200009 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 3 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Destructive grazing, epiphytism, and disease: the dynamics of sea urchin -kelp interactions in Nova Scotia AUTHOR(S): Scheibling,-R.E.; Hennigar,-A.W.; Balch,-T. AUTHOR AFFILIATION: Department of Biology, Dalhousie University Halifax, NS B3H 4J1 Canada; E -mail: rescheib@is.dal.ca SOURCE (BIBLIOGRAPHIC CITATION): Can-J-Fish-Aquat-Sci; J-Can-Sci-Halieut-Aquat 1999 vol. 56, no. 12, pp. 2300-2314 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The rate of advance of urchin (Stronylocentrotus droebachiensis) feeding aggregations (fronts) as they destructively grazed kelp beds (Laminaria longicruris) at both a wave-exposed site and a sheltered site in Nova Scotia over 3.5 years was measured. The grazing fronts were composed of high densities of large adults (up to 98 and 70 per 0.25 m super(2) at the exposed and sheltered sites, respectively). Urchins in the recently formed barrens, or in adjacent kelp beds, occurred at much lower densities and consisted mainly of juveniles. The fronts moved onshore into shallower water at each site, but their rate of advance varied markedly between sites and over time at each site, ranging from 0 to 4 m times month super( -1). The rate of advance of a front was related to the biomass of urchins, fronts did not advance below a threshold biomass of similar to 2 kg times m super(-2). Infestations of kelp by an epiphytic bryzoan (Membranipora membranacea) caused marked reductions in kelp canopy cover and biomass during winter, but the canopy regenerated through recruitment of juvenile sporophytes in spring. A localized outbreak of disease decimated S. droebachiensis at the exposed site in 1993, which enabled kelp to recolonize the barrens. Surviving urchins gradually reaggregated and resumed destructive grazing after similar to 1.5 years. A recurrence of disease in 1995 eliminated urchins at both sites and terminated the transition from kelp beds to barrens on a coastal scale. These findings have important implications for the management of the urchin fishery, which targets grazing fronts for harvesting. DESCRIPTORS: Grazing-; Kelps-; Biomass-; Fishery-management; Population-dynamics; Strongylocentrotus-droebachiensis; Membranipora-membranacea; Laminaria -longicruris; ANW,-Canada,-Nova-Scotia,-Little-Duck-I.; ANW,-Canada,-Nova -Scotia,-St.-Margarets-Bay IDENTIFIERS: epiphytes-; diseases- CLASSIFICATIONS: Population-studies:-Population-dynamics-1442; Autecology:-Nutrition-and -feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA0000164 ACCESSION NUMBER: 4725253 UPDATE CODE: 200006 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 4 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effects of the parasitic nematode Echinomermella matsi on growth and survival of its host, the sea urchin Strongylocentrotus droebachiensis AUTHOR(S): Stien,-A. SOURCE (BIBLIOGRAPHIC CITATION): Canadian-Journal-of-Zoology; Revue-Canadien-de-Zoologie [Can-J-Zool; Rev -Can-Zool] 1999 vol. 77, no. 1, pp. 139-147 INTERNATIONAL STANDARD NUMBERS: ISSN 0008-4301 PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: It has been suggested that the parasitic nematode Echinomermella matsi significantly affects the population dynamics of its host, the sea urchin Strongylocentrotus droebachiensis. The effects of infection on both host fecundity and host survival may be of importance. The fecundity of sea urchins is related to their size. Negative effects of infection on host growth will therefore reduce reproductive rates. I estimated the effect of infection on host growth and survival in two naturally infected wild sea urchin populations using a capture-mark-recapture approach. Infected and uninfected sea urchins were captured and marked with unique tags or recaptured seven times from June 1994 to September 1996. The increment in the diameter of marked sea urchins between captures was used to measure sea urchin growth. The effect of E. matsi infection on host growth was small. Mortality rates were estimated using survival probability models based on the methodology developed by Cormack, Jolly, and Seber. The effect of infection on host survival was pronounced, with estimated sea urchin life expectancies reduced by 33-86% by E. matsi infection. This suggests that E. matsi may affect the population dynamics of S. droebachiensis significantly through the effect on host survival. DESCRIPTORS: Host-parasite-interactions; Population-dynamics; Fecundity-; Survival-; Parasites-; Hosts-; Growth-curves; Echinomermella-matsi; Strongylocentrotus-droebachiensis; Nematoda- IDENTIFIERS: Nematodes-; Roundworms-; Threadworms- CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -parasites-and-diseases-1484; Population-studies:-Population-dynamics -1442; Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS0005908 ACCESSION NUMBER: 4649623 UPDATE CODE: 200006 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2041303 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36147 -- LIB HAS: Mar.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- LIB HAS: Selected full text, Jan.1997- -- UW Restricted Location: FriHarbor Periodicals -- Shelved by title: Canadian Journal Zoology -- Call number: QL1 .C28 -- LIB HAS: v.29- (1951-) Location: NatSci Periodicals -- Call number: 590.5 CAJ -- LIB HAS: v.29- (1951-) -- LATEST ISSUES ON DISPLAY Record 5 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Experimental field tests of natural algal diets on gonad index and quality in the green sea urchin, Strongylocentrotus droebachiensis: a case for rapid summer production in post-spawned animals AUTHOR(S): Vadas,-R.L.; Beal,-B.; Dowling,-T.; Fegley,-J.C. AUTHOR AFFILIATION: Department of Biological Sciences, University of Maine Orono, ME USA SOURCE (BIBLIOGRAPHIC CITATION): Aquaculture 2000 vol. 182, no. 1-2, pp. 115-135 INTERNATIONAL STANDARD NUMBERS: ISSN 0044-8486 PUBLICATION YEAR: 2000 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: We tested whether the roe (gonads) of "post-spawned", green sea urchins, Strongylocentrotus droebachiensis, from barren grounds could be enhanced in the field during summer. Experiments were initiated using a low roe -yielding (barren ground) population, which also served as a field control. Specifically, we determined the ability of naturally occurring macroalgae to increase roe yield and enhance roe color relative to field controls. Sixty experimental cages with algae and five test animals per cage (mean test diameter=50.0 mm) were suspended along the seaward end of a commercial lobster impoundment on Beals Island, Maine, on 18 June 1996. Urchins were fed ad libitum all (mixed diet) or one of four species of macroalgae (Palmaria palmata, Alaria esculenta, Laminaria saccharina and Ulva lactuca). Four replicate cages of each algal treatment and 20 individuals from the control population were sampled (without replacement) every 3 weeks until 20 August. This design permitted the use of orthogonal contrasts in both one- and two-factor ANOVAs. These analyses revealed significant enhancement, relative to controls, of both color and roe yield (gonad index doubled or tripled within 2 months). Algal-fed animals attained a mean gonad index greater than 10%, the minimum commercial standard in Maine, while field populations ranged from 4% to 6%. These analyses revealed differential roe enhancement among palatable seaweeds. The red alga, P. palmata, induced the quickest and highest response, singly, among the four algae tested. Roe production on P. palmata was generally higher, but similar to that of the mixed diet. The two kelp species, A. esculenta and L. saccharina, consistently produced the lowest yields. Roe yields were correlated with protein levels in the algae. Our study also provides some insight into seasonal allocation of energy and nutrients into gonadal tissue. These data show that off-season allocation to gonadal tissue is biologically feasible in the absence of photoperiodic manipulation and that summer enhancement could be used to meet the off -season (August) market demand for roe in Asia. DESCRIPTORS: Marine-aquaculture; Roes-; Feeding-experiments; Kelps-; Diets-; Growth-; Strongylocentrotus-droebachiensis; Palmaria-palmate; Alaria-esculenta; Laminaria-saccharina; Ulva-lactuca CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS0001981 ACCESSION NUMBER: 4655908 UPDATE CODE: 200003 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/00448486 Connect to the latest 9 months of this title online; UW restricted; http://www.sciencedirect.com/web -editions?_ob=JournalURL&_cdi=4972&_auth=y&_acct=C000021514&_version=1&_urlVersion=0&_userid=450576&md5=8096389a926d1715a1311aa7c42d73ef&sb=y See records of latest issues received http://catalog.lib.washington.edu/record=b2017886 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: SH1 .A67 -- LIB HAS: v.1- (1972-) -- Unbound issues on Display; Some volumes listed separately Record 6 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Acute Mortality of Soft Shell Clam, Mya arenaria, Larvae, Green Sea Urchin, Strongylocentrotus droenbachiensis, Larvae, and Rotifers, Brachionus plicatilis, Exposed to Cypermethrin (Excis) AUTHOR(S): Pahl,-B.C.; Opitz,-H.M. AUTHOR AFFILIATION: Department of Bio-Systems Science and Engineering, University of Maine, Orono, ME 04469, USA SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Applied-Aquaculture [J-Appl-Aquacult] 1999 vol. 9, no. 1, pp. 73 -84 INTERNATIONAL STANDARD NUMBERS: ISSN 1045-4438 PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The acute effects of Cypermethrin (Excis) on soft shell clam, Mya arenaria, larvae, green sea urchin, Strongylocentrotus droenbachiensis, larvae, and rotifers, Brachionus plicatilis, were studied in the laboratory. Cypermethrin (Excis) is used at a concentration of 5 mu g/L as a bath treatment of salmonids against sea lice, predominantly, Lepeophtheirus salmonis. Zooplankton were exposed for 1, 6, and 12 hours to different concentrations of Cypermethrin, at water salinity levels of 32 ( plus or minus 0.6) ppt and a temperature of 12 degree C. Clams, urchins, and rotifers were exposed to Cypermethrin concentrations of 0, 0.005, 0.05, 0.5, 5.0, 50, 500, 5,000, and 50,000 mu g/L. These concentrations correspond to 0, 1/1000, 1/100, 1/10, 1, 10, 100, 1,000, and 10,000 times the manufacturer's recommended treatment concentration. Only at concentrations of between 10-10 000 times greater than the recommended treatment dose of 5 mu g/L, did Cypermethrin treatment cause statistically significant mortality in the clam larvae (P < 0.05), sea urchin larvae (P < 0.05) and rotifers (P < 0.05). The LC50 values for soft shell clam larvae mortality after 1, 6 and 12 hours of exposure were calculated at 13,490; 11,749; and 10,715 mu g/L, respectively. For the sea urchin larvae the LC50 values after exposure for 1, 6, and 12 hour treatment durations were 21,5207; 39,716; and 16,982 mu g/L, respectively. All LC50 values for the rotifer were > 50,000 mu g/L. Soft shell clam larvae, green sea urchin larvae, and rotifers are not significantly affected by exposure to Cypermethrin concentrations below the manufacturer's recommended treatment dose. DESCRIPTORS: Mortality-; Invertebrate-larvae; Toxicity-tests; Ectoparasites-; Parasite -control; Strongylocentrotus-droebachiensis; Brachionus-plicatilis; Mya -arenaria IDENTIFIERS: Cypermethrin-; Softshell-clam CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions:-pests -and-control-1485; Aquaculture:-Fish-culture-1582 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS0002796 ACCESSION NUMBER: 4667342 UPDATE CODE: 200003 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2634967 Location: Fish-Ocean Stacks -- Call number: SH1 .J625 -- LIB HAS: v.1- (1991-) Record 7 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Reproductive Isolation and the Molecular Evolution of Sperm Bindin in Stronglyocentrotid Sea Urchins AUTHOR(S): Biermann,-C.H. AUTHOR AFFILIATION: State University of New York At Stony Brook, NY, USA SOURCE (BIBLIOGRAPHIC CITATION): Dissertation-Abstracts-International-Part-B:-Science-and-Engineering [Diss -Abst-Int-Pt-B-Sci-and-Eng] 1998 vol. 59, no. 2, [np] NOTES: Degree: PHD. Thesis Publ. Date: 1997, 233 pp. Source: UMI, 300 N Zeeb Rd, POB 1346, Ann Arbor, MI 48106. (800-521-0600), www.umi.com. REPORT/PATENT NUMBERS: AAT 9824662 (9824662) PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); U (Thesis-or-Dissertation) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: This thesis explores the evolution of reproductive isolation in a group of closely related echinoid echinoderms. in free spawning marine invertebrates, sperm-egg interactions are the only barrier to hybridization and thus may be important factors during speciation. I investigated evolutionary patterns at three levels: mating specificity of sea urchin gametes, the molecular divergence of the sperm protein bindin between species, and the polymorphism of bindin within two widespread species. Assessing fertilization success after mixing eggs and sperm in vitro showed asymmetric hybridizability among a triplet of sibling species. Hybridization between Strongylocentrotus droebachiensis and S. pallidus was greatly facilitated when their sperm were induced to undergo the acrosome reaction via treatment with conspecific egg jelly. For S. droebachiensis eggs, the number of sperm that bound to the egg membrane during the latent period was correlated with fertilization success. Therefore, at least three mechanisms are used in different combinations to maintain reproductive specificity among species within a single genus: The acrosome reaction induction, sperm binding, and membrane interactions after binding. Attachment of sperm to the egg envelope is mediated by the acrosomal protein bindin. Bindin DNA sequences diverged substantially, at noncoding as well as at replacement sites. However, there were too few synapomorphies to determine the branching order between five of the strongylocentrotid species with certainty. The most variable part of the protein consists of short tandem duplications that appeared to be under diversifying selection. Two other sections of bindin, flanking the central conserved block, exhibited an excess of replacement over silent substitutions when the more closely related species were compared. Individuals of Strongylocentrotus droebachiensis and S. pallidus were sampled from seven circumarctic locations, and phylogeographic patterns were compared for bindin and mitochondrial DNA sequences. Both species and both genomes demonstrated gene flow between Norway and Arctic Canada, and between the east and west coasts of North America. Deep divergences between intraspecific bindin clades and a large number of replacement substitutions may indicate natural selection, and confirmed the unexpected diversity observed in the bindin gene of a tropical sea urchin family. DESCRIPTORS: Evolution-; Biological-fertilization; Proteins-; Strongylocentrotus -droebachiensis; Strongylocentrotus-pallidus IDENTIFIERS: reproductive-isolation; bindin- CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: NO9902354 ACCESSION NUMBER: 4468313 UPDATE CODE: 200003 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 8 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effects of food type and ration on reproductive maturation and growth of the sea urchin Strongylocentrotus droebachiensis AUTHOR(S): Meidel,-S.K.; Scheibling,-R.E. AUTHOR AFFILIATION: Darling Marine Center, University of Maine 195 Clarks Cove Road, Walpole, ME 04573 USA SOURCE (BIBLIOGRAPHIC CITATION): Mar-Biol 1999 vol. 134, no. 1, pp. 155-166 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Incl. bibliogr.: 77 refs. PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The authors investigated the effects of food quality and quantity on reproductive maturation and growth of juveniles of Strongylocentrotus droebachiensis in a 22 month laboratory experiment in which we fed sea urchins four diets: (1) kelp (Laminaria) for 6 d/wk and mussel (Mytilus) flesh for 1 d /wk (KM); (2) kelp for 7 d/wk (high ration, KH); (3) kelp for 1 d/wk (low ration, KL) and (4) no food other than encrusting coralline algae (NF). At their first and second opportunity for reproduction, all sea urchins in the KM and KH treatments, and most in the KL treatment were reproductively mature, whereas all sea urchins in the NF treatment remained immature. Gonad index differed significantly among all fed treatments at first and second reproduction, and was highest in the KM and lowest in the KL treatment. Gonad index was similar in both sexes at first reproduction, but it was higher in females than in males at second reproduction. Diet had little or no effect on the relative abundance of spermatocytes, spermatozoa, or nutritive phagocytes in testes at first and second reproduction. In ovaries, nutritive phagocytes were significantly more abundant in females in the KM and KH treatments than in the KL treatment at first reproduction, and significantly more abundant in unfed (NF) than fed (KM, KH, KL) females at second reproduction. Mean oocyte size was similar in all fed females at first reproduction, but significantly larger in fed than unfed females at second reproduction. Mean ovum size was similar in all fed females in both reproductive periods. Increase in test diameter was greatest in the KM treatment and smallest in the KL treatment; sea urchins in the NF treatment decreased slightly in size. Survival was 95 to 100% in all fed sea urchins but significantly lower in unfed ones. The feeding rate on kelp was significantly greater in the KL than the KM and KH treatments. In the KM treatment, the feeding rate on kelp increased significantly over a 6 d period after mussel flesh was provided. Our results demonstrate that a diet of high food quality and quantity accclerates reproductive maturation and growth rate, and enhances gonad production and survival in juvenile and young adult S. droebachiensis. These findings contribute to our understanding of the reproductive ecology of S. droebachiensis in habitats with differing food supplies (e.g., kelp beds and barrens). Our results also can be used to improve aquacultural practices for sea urchins. DESCRIPTORS: Sexual-reproduction; Sexual-maturity; Growth-; Food-availability; Strongylocentrotus-droebachiensis IDENTIFIERS: diets-; feeding-experiments; food-organisms; survival-; statistical-analysis CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: BF9902100 ACCESSION NUMBER: 4644306 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 9 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Density-related reproductive trade-offs in the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): Wahle,-R.A.; Peckham,-S.H. AUTHOR AFFILIATION: Bigelow Laboratory for Ocean Sciences McKown Point, West Boothbay Harbor, ME 04575 USA SOURCE (BIBLIOGRAPHIC CITATION): Mar-Biol 1999 vol. 134, no. 1, pp. 127-137 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Green sea urchin, Strongylocentrotus droebachiensis, populations are being depleted rapidly in the Gulf of Maine and there is justified concern that the potential of this free-spawner to produce larvae may be severely inhibited. The authors evaluated the opposing effects of different population densities on gonad development and fertilization success, using population surveys and fertilization experiments. We determined gonad indices (gonad mass /body mass) over a range of population densities (0.1 to 250 ind. /m super(2)) at seven sites in coastal Maine, USA, sampled at two depths (5 and 15 m). At shallow sites, we found that gonad indices declined by 50% over the 1500-fold range in adult population density. At 15 m deep locations, gonad mass was consistently low and did not vary significantly with density. Patterns of macroalgal abundance suggest urchins at high density and in deeper water were food limited. Because macroalgal cover covaries inversely with sea urchin density, we designed field experiments to determine the interaction between sea urchin density and kelp canopy on fertilization success. On square arrays we manipulated the spacing of simulated urchins, but held their numbers constant (five sperm-filled syringes interspersed with four Nitex mesh egg containers permeable to sperm). These experiments; simulating the observed range of natural density, suggested that (1) fertilization rates decreased many times faster than individual gamete production increased over the same range in density, and (2) kelp increased fertilization success at high density when eggs were within 25 cm of a sperm source, but not when spaced 1 m apart. Additional laboratory fertilization experiments at ambient temperatures (3 to 5 degree C) indicated that diluted sperm were viable for <1 h, but egg viability was virtually unchanged for >8 h. In short, to the individual the reproductive benefits of aggregating appear to outweigh the costs; and while sperm may be limiting at low population density, eggs may remain viable long enough to be fertilized by sperm from more distant males. DESCRIPTORS: Sexual-maturity; Population-density; Fecundity-; Gametogenesis-; Kelps-; Strongylocentrotus-droebachiensis; ANW,-USA,-Maine-Gulf IDENTIFIERS: animal-reproductive-organs; experimental-research; sperm-; biomass-; statistical-analysis CLASSIFICATIONS: Population-studies:-Population-dynamics-1442 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9902097 ACCESSION NUMBER: 4644302 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 10 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Sea urchin (Strongylocentrotus spp.) fisheries in Kamchatka: Current conditions and problems AUTHOR(S): Bazhin,-A.G. AUTHOR AFFILIATION: Kamchatka Research Institute Fisheries Oceanography Naberezhnaya 18, Petropavlovsk-Kamchatsky 683002 Russia CORPORATE AUTHOR(S): National Research Counc. of Canada, Ottawa, ON (Canada) SOURCE (BIBLIOGRAPHIC CITATION): Proceedings-of-the-North-Pacific-Symposium-on-Invertebrate-Stock-Assessment -and-Management Jamieson,-G.S.-(ed.); Campbell,-A.-(ed.) 1998 no. 125, pp. 423-427 INTERNATIONAL STANDARD NUMBERS: ISBN 0-660-17221-6 ISSN 0706-6481 SERIES TITLE/INFORMATION: Can-Spec-Publ-Fish-Aquat-Sci; Publ-Spec-Can-Sci-Halieut-Aquat PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Surveys of three species of sea urchin (Strongylocentrotus droebachiensis, S. pallidus, and S. polyacanthus) were conducted along the east coast of Kamchatka and adjacent waters during 1984-1994. S. polyacanthus inhabited shallow exposed open coastal waters with higher salinity and lower temperatures than those for S. droebachiensis which occurred in protected inlets and small bays and in sites near small river mouths with brackish warm shallow waters. S. pallidus occurred mainly in waters deeper than 10 m. Distributions and gonad quality of sea urchins were considered in the implementation of fishery management plans of these species. The objectives of this paper are to present the results of a survey of sea urchin abundance in relation to physical factors such as depth, substrate types, and coastal exposure characteristics and to indicate which of these populations would be suitable for commercial harvesting. DESCRIPTORS: Fishery-surveys; Stock-assessment; Echinoderm-fisheries; Oceanographic -data; Fishery-management; Strongylocentrotus-spp; Strongylocentrotus -droebachiensis; Strongylocentrotus-pallidus; Strongylocentrotusd -polyacanthus; ANW,-Russia,-Kamchatka CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA9900924 ACCESSION NUMBER: 4628416 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 11 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): The influence of estradiol on vitellogenesis in the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): McGinn,-N.A.; Lesser,-M.P.; Walker,-C.W. AUTHOR AFFILIATION: Department of Zoology, University of New Hampshire, Durham, NH 03824 CONFERENCE INFORMATION: 91. Annual Meeting of the National Shellfisheries Association, Halifax, NS (Canada), April 18-22, 1999 SOURCE (BIBLIOGRAPHIC CITATION): National-Shellfisheries-Association vol. 18, no. 1 311 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 SERIES TITLE/INFORMATION: Journal-of-Shellfish-Research- 1999 vol. 18, no. 1 NOTES: Abstracts Only LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Sea urchins store nutrients in specialized gonadal cells called nutritive phagocytes. The size and contents of these cells fluctuate predictably during the reproductive cycle. A major element of the large nutritive phagocytes at the onset of gametogenesis is a yolk related protein. Little is known about the origin and accumulation of this protein in sea urchins. Yolk protein synthesis, part of vitellogenesis, is initiated by estradiol in some animals. Treatment with estradiol may increase yolk related protein production in S. droebachiensis. Green sea urchins were collected in June 1998 and maintained in flowing seawater. They were fed a prepared diet either untreated (=control) or treated with 17 beta -estradiol (1 mu g/g feed). Test and gonad measurements were made and gonad index was determined for monthly urchin collections through October 1998. Histological sections from fixed and resin-embedded gonads were examined by light microscopy. We are determining the amount and location of yolk related protein in developing urchin gonads using Western blot analysis and immunohistochemistry with rabbit polyclonal anti-urchin major yolk protein antibody. Implications for sea urchin aquaculture will be discussed. Supported by CMB grant to NAM and Sea Grant to CWW and MPL. DESCRIPTORS: Aquaculture-development; Animal-nutrition; Reproductive-cycle; Vitellogenesis-; Protein-synthesis; Yolk-; Gametogenesis-; Shellfish -culture; Sex-hormones; Aquaculture-techniques; Hormones-; Strongylocentrotus-droebachiensis IDENTIFIERS: estradiol- CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9923323 ACCESSION NUMBER: 4621069 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 12 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Increasing the somatic growth rate of juvenile green sea urchins (Strongylocentrotus droebachiensis) using prepared diets AUTHOR(S): Kennedy,-E.J.; Robinson,-S.M.C.; Parsons,-G.J. AUTHOR AFFILIATION: DFO, Biological Station, St. Andrews, NB, Canada E0G 2X0 CONFERENCE INFORMATION: 91. Annual Meeting of the National Shellfisheries Association, Halifax, NS (Canada), April 18-22, 1999 SOURCE (BIBLIOGRAPHIC CITATION): National-Shellfisheries-Association vol. 18, no. 1 304 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 SERIES TITLE/INFORMATION: Journal-of-Shellfish-Research- 1999 vol. 18, no. 1 NOTES: Abstracts Only LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: As the world market demand for sea urchins continues to rise, the wild fishery is reaching a limit for providing good quality sea urchins thus other means, such as aquaculture, must supply world demand. In order to provide a constant seed supply for a sea urchins aquaculture industry, a hatchery must become a realization. Part of such an operation is maximizing juvenile somatic growth rates to shorten the overall production cycle, increase quality and increase production revenue. One approach is to use prepared diets as these have a positive effect on gonad growth rates of adult sea urchins. Components of the prepared diets must be investigated to determine the effects on juvenile growth so that a diet yielding maximal growth rates can be developed. This study investigated the effect of three factors: protein source, protein concentration and juvenile size on somatic growth rates. Protein sources used were (a) soybean protein, (b) 95% soybean protein and 5% fish protein, and (c) 50% soybean and 50% fish protein. For each set of diets, 4 different protein concentrations were used: 20%, 30%, 40%, and 50%, for a total of 12 diets. The two cohorts of sea urchins had a size range of 1-8 mm and 12-20 mm initial test diameter. Each treatment consisted of 4 replicates in a randomized block design. Twenty-four tanks, with 4 treatment baskets per tank, were subject to the prepared diets while 2 "control" tanks were fed a natural diet of seaweeds for comparison. Results of the study will be further discussed with regard to establishing diets for future hatchery/nursery production of the green sea urchin. DESCRIPTORS: Diets-; Rearing-; Feed-composition; Animal-nutrition; Yield-; Growth -curves; Feeding-experiments; Proteins-; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9922186 ACCESSION NUMBER: 4621045 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 13 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Survival and growth of juvenile green sea urchins on different macroalgal settlement substrates AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Department of Fisheries and Natural Science, Bodoe College, N-8002 Bodoe, Norway CONFERENCE INFORMATION: 91. Annual Meeting of the National Shellfisheries Association, Halifax, NS (Canada), April 18-22, 1999 SOURCE (BIBLIOGRAPHIC CITATION): National-Shellfisheries-Association vol. 18, no. 1 303 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 SERIES TITLE/INFORMATION: Journal-of-Shellfish-Research- 1999 vol. 18, no. 1 NOTES: Abstracts Only LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The effect of settlement substrate on the survival and growth of juvenile green sea urchins (Strongylocentrotus droebachiensis) was investigated in a laboratory experiment which was independently replicated 3 times. Five substrates were investigated: the articulate coralline alga Corallina officinalis; the crustose coralline alga Lithothamnion glaciale; the foliose red alga Palmaria palmata; the minute green alga Ulvella lens; and the natural biofilm which developed in empty experimental containers. A total of 4750 competent urchin larvae gave rise to 2064 juveniles during Phase 1 of the experiment, which lasted between 6 and 11 weeks. During Phase 2 of the experiment, which lasted between 8 and 11 weeks, all surviving juveniles were fed P. palmata. The total number of surviving juveniles was reduced to 1153 by the end of Phase 2. In Phase 1 the control treatments with natural biofilm had the best survival rates ( approximately 60-70%), closely followed by Corallina and Lithothamnion, whereas survival on Palmaria was 25-50%, and survival on Ulvella was less than or equal to 10%. In Phase 2 the pattern of survival changed substantially, and juveniles which had settled on the coralline algae clearly had the best overall survival. The growth of juveniles settled on the coralline algae was consistently better than controls during both phases of the experiment, although juveniles settled on Palmaria had similar growth in the third replicate of the experiment and in Phase 1 of the first replicate. In conclusion, the best overall growth and survival was obtained in treatments with coralline algae. DESCRIPTORS: Larval-settlement; Survival-; Growth-curves; Interspecific-relationships; Seaweeds-; Substrata-; Palmaria-palmata; Corallina-officinalis; Lithothamnion-glaciale; Ulvella-lens; Corallinales-; Strongylocentrotus -droebachiensis CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -general--1483; Aquaculture:-Culture-of-other-aquatic-animals-1584; Botany:-General-1221; Invertebrate-biology:-Reproduction-and-development -1244; Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9922185 ACCESSION NUMBER: 4621044 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 14 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Manipulation of food and photoperiod promotes out-of-season gametogenesis in the green sea urchin, Strongylocentrotus droebachiensis: Implications for aquaculture AUTHOR(S): Walker,-C.W.; Lesser,-M.P. AUTHOR AFFILIATION: Department of Zoology and Center for Marine Biology, University of New Hampshire Durham, NH 03824 USA SOURCE (BIBLIOGRAPHIC CITATION): Mar-Biol 1998 vol. 132, pp. 663-676 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Green sea urchins, Strongylocentrotus droebachiensis, collected off the coast of New Hampshire, USA, in late February 1995, were brought into the laboratory and fed an artificial diet ad libitum, and subjected to a photoperiod advanced by 4 months. During this study, temperatures and salinities for experimental urchins mirrored those recorded at the collection site. We examined the effects of changes in feeding regime and photoperiod on gametogenesis and compared the experimental urchins with those from the source population. During the 7-month period, experimental urchins showed no detectable changes in mean test height or diameter. Experimental urchins had a significantly higher gonad index (GI) in March, April and May (18 plus or minus 6%) compared with field urchins in March (11 plus or minus 3%). Subsequently, experimental urchins had a mean monthly GI of 25 to 30%, while the mean GI for field urchins was 11 to 13%. Gonial cell mitosis and gametogenesis occurred earlier in experimental male and female urchins compared with field urchins. Stereological and histological observations and stage-frequency data showed that the ovaries of experimental urchins were large because of the accelerated development of nutritive phagocytes, the volume fraction (V sub(v)) of which was 89 to 90% of the gonad, while new vitellogenic primary oocytes occupied <1% V sub(v). In males, stereological and histological observations and stage-frequency data suggested a mobilization of materials from the nutritive phagocytes beginning between June and August, i.e. earlier than in females, and, by September, new gametes occupied a V sub(v) of 49 plus or minus 3% of the testes. Oocyte size-frequency distributions demonstrated that most primary oocytes were <80 mu m in diameter between March and September, suggesting that cold temperatures may be need for completion of vitellogenesis. We describe changes in the two principal cell types in the germinal epithelium of urchin gonads and indicate how knowledge of their population dynamics may be useful in aquaculture applications. DESCRIPTORS: Food-availability; Histology-; Animal-morphology; Aquaculture-enterprises; Experimental-culture; Food-absorption; Ultrastructure-; Size-distribution; Strongylocentrotus-droebachiensis; ANW,-USA,-New-Hampshire IDENTIFIERS: sexual-reproduction; gametogenesis-; feeding-experiments; photoperiods- CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244; Aquaculture: -Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9901464 ACCESSION NUMBER: 4609622 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 15 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Relative importance of parental and larval nutrition on larval development and metamorphosis of the sea urchin Strongylocentrotus droebachiensis AUTHOR(S): Meidel,-S.K.; Scheibling,-R.E.; Metaxas,-A. AUTHOR AFFILIATION: Darling Marine Center, University of Maine, 193 Clarks Cove Road, Walpole, ME 04573, USA; E-mail: meidel@maine.edu SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Experimental-Marine-Biology-and-Ecology [J-Exp-Mar-Biol-Ecol] 1999 vol. 240, no. 2, pp. 161-178 INTERNATIONAL STANDARD NUMBERS: ISSN 0022-0981 PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: We examined the relative importance of parental nutritional condition and larval food ration on the rates of development, growth and metamorphosis of larvae of Strongylocentrotus droebachiensis (Mueller) in a laboratory experiment. Parents were reared for 22 months on either a high ration of kelp (Laminaria spp., 6 days week super(-1)) supplemented with mussel flesh (Mytilus spp., 1 day week super(-1)) (KM), or a low ration of kelp (1 day week super(-1)) (KL). Larvae were fed either a high ration (5000 cells ml super(- 1)) or a low ration (500 cells ml super(-1)) of microalgae (Dunaliella tertiolecta). Larval food ration had a strong effect on the rates of development, growth, and metamorphosis, which were all significantly greater in larvae fed the high ration. Test diameter of settlers also was significantly greater in the high than the low ration. Parental nutritional condition had little or no effect on the rates of development and growth, and no effect on settler size. The rate of metamorphosis was significantly higher in larvae from the KM than the KL treatment in the high but not the low ration (where rates of metamorphosis were similar). Although parental condition generally had a small effect on larval development, our results suggest that when planktonic food is abundant, larvae of adults from nutritionally rich habitats (such as kelp beds) may metamorphose sooner than those of adults from nutritionally poor habitats (such as barrens). DESCRIPTORS: Growth-; Nutrition-; Growth-curves; Food-availability; Invertebrate-larvae; Metamorphosis-; Animal-nutrition; Body-conditions; Feeding-experiments; Larval-development; Strongylocentrotus-droebachiensis; Echinoidea- IDENTIFIERS: Heart-urchins; Sand-dollars; Sea-urchins CLASSIFICATIONS: Autecology:-Environmental-effects-1422; Invertebrate-biology:-Reproduction -and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9919756 ACCESSION NUMBER: 4591327 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/00220981 Connect to this title online; UW restricted http://www.elsevier.com/locate/jembe See records of latest issues received http://catalog.lib.washington.edu/record=b2008200 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Journal experimental marine biology ecology -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) Record 16 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Metallothionein in green sea urchins (Strongylocentrotus droebachiensis) as a biomarker for metal exposure AUTHOR(S): Aspholm,-O.O.; Hylland,-K. AUTHOR AFFILIATION: Department of Biology, University of Oslo P.O. Box 1064, N-0316 Oslo Norway SOURCE (BIBLIOGRAPHIC CITATION): Mar-Environ-Res 1998 vol. 46, no. 1-5, pp. 537-540 INTERNATIONAL STANDARD NUMBERS: ISSN 0141-1136 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The object of this study was to clarify whether metallothionein (MT) in the green sea urchin (Strongylocentrotus droebachiensis) may be used as a biomarker for environmental metal stress. The concentrations of Cd, Cu, Zn and MT in the intestine and gonads of S. droebachiensis from a metal -contaminated fjord were determined. Metal concentrations were determined by ET-AAS and MT concentrations by differential pulse polarography. The method used to quantify MT was evaluated and found to be satisfactory for intestinal samples, but failed to remove high-molecular weight (HMW) sulfhydryl-rich components in gonads. Both intestine and gonads of S. droebachiensis collected from a metal-contaminated area contained higher concentrations of Cd and Zn than sea urchins collected at a clean reference site. Metallothionein in sea urchin intestine related to both Cd and Zn in this tissue. In contrast, sex differences appeared to a large extent to determine metal-binding protein (MBP) concentrations (including HMW components) in gonads. In conclusion, MT in sea urchin intestine is a promising candidate as an invertebrate biomarker for exposure to Cd and Zn. In this species, MT in gonads appears not to be appropriate as a biomarker. DESCRIPTORS: Biomarkers-; Metallothioneins-; Biological-stress; Pollution-; Intestines-; Strongylocentrotus-droebachiensis; ANE,-Norway,-Hordaland, -Hardangerfjorden; ANE,-Norway,-Hordaland,-Soerfjorden CLASSIFICATIONS: Aquatic-pollution:-Effects-on-organisms-1504 JOURNAL ANNOUNCEMENT: ASFA-3:-Aquatic-Pollution-and-Environmental-Quality (Q5) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: MB9900946 ACCESSION NUMBER: 4592953 UPDATE CODE: 199912 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/01411136 Connect to the latest 9 months of this title online; UW restricted; http://www.sciencedirect.com/web -editions?_ob=JournalURL&_cdi=5843&_auth=y&_acct=C000021514&_version=1&_urlVersion=0&_userid=450576&md5=eca8b843322c018889427f17c20dfc62&sb=y See records of latest issues received http://catalog.lib.washington.edu/record=b2059612 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: GC1 .M345 -- LIB HAS: v.1- (July 1978-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Call number: GC1 .M345 -- LIB HAS: v. 1-7 (July 1978-1982) Record 17 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Biology of sea-urchins under intensive cultivation (closed cycle echiniculture) AUTHOR(S): Jaugoux,-M.-dir.; Cosson,-J.; hagen,-N.T. AUTHOR AFFILIATION: Universite Libre de Bruxelles (ULB), Faculte des Sciences, Laboratoire de Biologie Marine Av. F.D. Roosevelt 50, CP 160/15 BE 1050 Bruxelles Belgium; E-mail: mjangoux@ulb.ac.be CONFERENCE INFORMATION: 3. European Marine Science and Technology Conference, Lisbon (Portugal), 23 -27 May 1998 SOURCE (BIBLIOGRAPHIC CITATION): Third-european-marine-science-and-technology-conference-MAST-conference, -Lisbon,-23-27-May-1998:-Project-synopses-Vol-6:-Fisheries-and-Aquaculture -FAIR:-1994-98,-selected-projects-from-the-research-programme-for -Agriculture-and-Fisheries-including-agro-industry,-food-technology, -forestry,-aquaculture-and-rural-development-FAIR Barthel,-K.G.-(ed.); Barth,-H.-(ed.); Bohle-Carbonell,-M.-(ed.); Fragakis,-C.-(ed.); Lipiatou, -E.-(ed.); Martin,-P.-(ed.); Ollier,-G.-(ed.); Weydert,-M.-(ed.) Luxembourg-Luxembourg European-Commission-DG-12-Science,-Research-and -Development 1998 vol. 6, pp. 173-175 INTERNATIONAL STANDARD NUMBERS: ISBN 92-828-3039-X NOTES: ISBN 92-828-2896-4 (Volumes 1 to 6). REPORT/PATENT NUMBERS: Contract No: FAIR-CT96-1623 (SC) (NoFAIRCT961623SC) PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The ultimate objective of the project is to control every life stage of the most valuable species of European edible sea-urchins (Paracentrotus lividus and Strongylocentrotus droebachiensis) under intensive cultivation (closed cycle echiniculture) to produce high quality gonads (roe, i.e.: the edible part of the animal) at a pilot scale. The obstacles that prevent the intensification of echiniculture have been clearly identified: (1) post-settlement survival and growth. rate need to. be improved,. and (2) the carrying capacity of the rearing structures needs to be increased by bypassingmain limiting; factors, i.e., depletion in dissolved carbonates and accumulation of carbonic acid. Moreover, the quality control of gonads and Optimization of gonad growth are key factors, that, have to be addressed. The proposed work aims to investigate aspects of the biology of cultivated sea-urchin related to these obstacles, to finalise technical enhancements of the cultivation procedure in either eliminating or by passing these obstacles, and to adapt the rearing method presently used for Paracentrotus lividus to Strongylocentrotus droebachiensis. The sea-urchin cultivation procedure use special devices constituted by several superposed shallow tanks. The shallow tanks, viz.. the so-called toboggans, hang over a reserve tank where water is treated before being reused. This treatment includes aeration, decantation and thermoregulation. A centrifugal pump transfers water from the reserve tank to the top level, and the water then recirculates thanks to gravity from one level to the other. Water renewal is regulated between 250 and 600 % of the total volume per day following the population density. In this semi -intensive cultivation procedure, the biomass is maintained below 5-6 kg of sea-urchins larger than 10 mm diameter per m super(2) of toboggan (growth structure) or between 0.2 and 1 kg of sea-urchins smaller than 10 mm per m super(2) of tobbogan (pregrowth structure). The control of the whole life cycle of sea-urchins in closed cycle cultivation aiming to obtain adult individuals with high gonadal productivity was demonstrated to be possible in such installations. A method for production of large individuals - viz. the standard rearing method or SRM - was already perfected through some basic aspects clearly need to be improved. These aspects have been previously identified and will be the subject of the investigations detailed below. DESCRIPTORS: Biology-; Gonads-; Rearing-; Growth-; Life-cycle; Paracentrotus-lividus; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Autecology:-Age-and-growth-1424 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: IF9901248 ACCESSION NUMBER: 4592378 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 18 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): The Effect of Astaxanthin in Feed and Environmental Temperature on Carotenoid Concentration in the Gonads of the Green Sea Urchin Strongylocentrotus droebachiensis Mueller AUTHOR(S): Havardson,-B.; Imsland,-A.K.; Christiansen,-R. AUTHOR AFFILIATION: Department of Fisheries and Marine Biology, University of Bergen, High Technology Centre, N-5020 Bergen, Norway SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-the-World-Aquaculture-Society [J-World-Aquacult-Soc] 1999 vol. 30, no. 2, pp. 208-218 INTERNATIONAL STANDARD NUMBERS: ISSN 0893-8849 PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The aim of this study was to investigate the long term development of carotenoid concentration in gonads and gonad development of green sea urchins reared at different temperatures and fed formulated feed containing different levels of astaxanthin. Urchins, sampled from a natural population, were reared under two different temperature regimes (7 C and 12 C) and fed formulated feed containing 0, 100 and 500 mg astaxanthin/kg feed, respectively. The study lasted 112 d. Astaxanthin was detected in the groups fed feed containing astaxanthin, but in low quantities. No effect of temperature was observed on the retention of astaxanthin. Echinenone values declined throughout the study, probably due to the lack of suitable metabolic precursor for production of echinenone. Water and lipid concentration in the gonads increased throughout the study indicating the progressions of gametogenesis and the generally improved nutritional status of the animals. No significant difference in gonad index (GI) due to treatment was observed but GI varied between the sexes with male GI increasing significantly faster compared to females. DESCRIPTORS: Feed-composition; Food-additives; Carotenoids-; Temperature-effects; Animal -reproductive-organs; Nutritional-requirements; Strongylocentrotus -droebachiensis CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9917669 ACCESSION NUMBER: 4571531 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2226529 Location: Fish-Ocean Stacks -- Call number: SH135 .J69 -- LIB HAS: v.17- (1986-) Record 19 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Pilot-scale commercial sea urchin roe enhancement -- ocean corral trials AUTHOR(S): Bridger,-C.J.; Hooper,-R.G.; mcKeever,-T.J. AUTHOR AFFILIATION: Centre-Aquaculture & Seafood Development, Memorial University St. John's, NF A1C 5R3 Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB (Canada) SOURCE (BIBLIOGRAPHIC CITATION): Contributed-papers-Aquaculture-Canada-'-98 1999 no. 98-2, pp. 99-101 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: Bull-Aquacult-Assoc-Can PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: New Ocean Enterprises Ltd. (NOEL) of Placentia, Newfoundland, a commercial partner of the Marine Institute of Memorial University of Newfoundland sea urchin, Strongylocentrotus droebachiensis research team, tested the results obtained from small-scale roe enhancement studies on a pilot semi -commercial sea urchin ranch. Sea urchins were maintained in corrals and fed Laminaria digitata. Gonad yield was greater in all fed treatments than in the deeper, wild sea urchins sampled. Gonad quality was also better; but the quality within treatments was variable. Sea urchins held and fed in deep, barren environments gave yields comparable to those held in more favourable environments. In addition, there were indications that the sea urchins held in the deeper, more constant environment may have given better results if the feeding trials had begun earlier in the season. Sea urchins harvested from the ranch received favourable market prices, providing incentive for the venture to expand for the next season. DESCRIPTORS: Ranching-; Aquaculture-development; Quality-assurance; Gonads-; Roes-; Financing-; Laminaria-digitata; Strongylocentrotus-droebachiensis; ANW, -Canada,-Newfoundland,-Placentia-Bay IDENTIFIERS: performance-assessment CLASSIFICATIONS: Aquaculture:-General-1581; Aquaculture:-Culture-of-other-aquatic-animals -1584; Aquaculture:-General-1581 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA9900619 ACCESSION NUMBER: 4584585 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 20 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Conditioning green sea urchins in tanks: Water quality tolerance limits AUTHOR(S): Motnikar,-S.; Marsan,-R.; Tetreault,-F. AUTHOR AFFILIATION: Ministere de l'Agriculture, des Pecheries et de 'Alimentation C.P. 340, Grand-Riviere, QC G0C 1V0 Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB (Canada) SOURCE (BIBLIOGRAPHIC CITATION): Contributed-papers-Aquaculture-Canada-'-98 1999 no. 98-2, pp. 96-98 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: Bull-Aquacult-Assoc-Can PUBLICATION YEAR: 1999 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Little is known about sea urchin (Strongylocentrotus droebachiensis) responses to suboptimal water quality conditions and the effect these may have on their survival, gonadal quality, and development during conditioning in trials in tanks. The 4 experimental parameters of this study consisted of 2 salinities (29% and 19%), two densities of urchins (45 kg/m super(3) = 1 and 90 kg /m super(3) = 2), two water exchange rates (one tank volume/hour = C and one tank volume/12 hours = S) and either the presence or absence of food (fed = O and non-fed = N). Water quality (oxygen levels amd ammonia) was monitored regularly and the mortality of urchins was followed throughout the study. At the end of 29 days, mortality, the gonad index (G.I.) as well as the acceptability of gonad colour of surviving urchins was analysed. The results show that mortality was significantly higher in all the groups having a low water exchange rate. Low salinity and high density can be limiting factors when combined. The presence or absence of food does not appear to be a critical factor for urchin survival. The non-fed groups appear to a have a lower gonadal quality. As for the quality of gonad colour, the gonads from the treatment 292CN(29%, 90 kg /m super(3), water exchange of one tank volume/hour, non -fed) are more often rejected due to unacceptable colour, as compared to the gonads from the initial group. It appears that a combination of critical factors are a cause of mortality, rather than any factor by itself, except perhaps the low water exchange rate. DESCRIPTORS: Water-quality; Culture-tanks; Gonads-; Population-density; Food -consumption; Salinity-effects; Survival-; Strongylocentrotus -droebachiensis; Invertebrata- IDENTIFIERS: colour- CLASSIFICATIONS: Aquaculture:-General-1581; Aquaculture:-Culture-of-other-aquatic-animals -1584; Aquaculture:-General-1581 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9900618 ACCESSION NUMBER: 4584584 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 21 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Stock assessment and quota options for the sea cucumber fishery AUTHOR(S): Phillips,-A.C.; Boutillier,-J.A. AUTHOR AFFILIATION: Fisheries Oceans Canada, Pacific Biological Station Nanaimo, BC V9R 5K6 Canada CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Nanaimo, BC [Canada] Sci. Branch SOURCE (BIBLIOGRAPHIC CITATION): Invertebrate-Working-Papers-reviewed-by-the-Pacific-Stock-Assessment-Review -Committee-PSARC-in-1995-Part-2-Echinoderms Waddell,-B.J.-(eds); Gillespie -G.E.-(eds.); Walthers,-L.C.-(eds.) 1998 no. 2215, pp. 147-169 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-6457 SERIES TITLE/INFORMATION: Can-Tech-Rep-Fish-Aquat-Sci; Rapp-Tech-Can-Sci-Halieut-Aquat PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Giant sea cucumber (Parastichopus californicus) stocks in British Columbia have in past been managed by arbitrary Pacific Fishery Management Area (PFMA) quota using reduction in CPUE from observation of the fishery and declining landings from sales slip data as indicators of overharvest. Little is known of growth rates, recruitment, age or natural mortality for this species. In the absence of sound biologiocal data, a surplus production model using biological parameters derived from harvest logbooks and from published sources was used to indicate low, medium and high risk harvest quotas by PFMA for 1995. Analysis of catch logbooks and sales slip data has revealed several shortcomings in the database related both to the difficulty in defining biomass in such a plastic and seasonally variable animal, and to errors or omissions in reporting. Owing to the management strategy of rotational closure now in place, there are few PFMAs which have been fished in consecutive years from which production and recruitment information can be derived. Divers move between isolated concentrations of cucumbers before any reduction in CPUE is apparent. Pre -season scouting and stockpiling may artificially increase production. The cumulative effect is to make any estimate of biomass subject to a great deal of uncertainty. The density estimates made from calculations agree favourably with other independent estimates. Harvest quotas proposed for the low risk option are in many instances near those set for the 1994 fishery. Present analysis indicates that the North Coast is generally harvesting below MSY while the South Coast is harvesting at or slightly above the MSY. DESCRIPTORS: Echinoderm-fisheries; Stock-assessment; Quota-regulations; Fishery -management; Fishery-surveys; Biomass-; Echinodermata-; Strongylocentrotus -droebachiensis; INE,-Canada,-British-Columbia CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CA9900553 ACCESSION NUMBER: 4584469 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2052716 Location: Fish-Ocean Microforms -- Call number: Microfiche MB-303 -- LIB HAS: no.927- (1980 -) -- Incomplete; Some only available in print format Location: Fish -Ocean Stacks -- Call number: SH1 .C352 -- LIB HAS: no.925- (1980-) -- Incomplete; Some volumes listed separately; Some only in microfiche Record 22 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Review of fishery-dependent data and quota recommendations for 1995/96 for the green sea urchin fishery in British Columbia AUTHOR(S): Perry,-R.I.; Waddell,-B.J.; Campbell,-A.; Hobbs,-K. AUTHOR AFFILIATION: Fisheries Oceans Canada, Pacific Biological Station Nanaimo, BV V9R 5K6 Canada CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Nanaimo, BC [Canada] Sci. Branch SOURCE (BIBLIOGRAPHIC CITATION): Invertebrate-Working-Papers-reviewed-by-the-Pacific-Stock-Assessment-Review -Committee-PSARC-in-1995-Part-2-Echinoderms Waddell,-B.J.-(eds); Gillespie -G.E.-(eds.); Walthers,-L.C.-(eds.) 1998 no. 2215, pp. 111-146 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-6457 SERIES TITLE/INFORMATION: Can-Tech-Rep-Fish-Aquat-Sci; Rapp-Tech-Can-Sci-Halieut-Aquat PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The fishery for green sea urchins (Strongylocentrotus droebachiensis) on the British Columbia coast developed rapidly from 1987 to 1991, peaked in 1992 with landings of 1,042 t, followed by declining landings and catch per unit effort (CPUE) and the imposition of management restrictions since 1992. In 1994, coastwide landings were 324 t, with South Coast landings of 276 t, below the quota of 449 t. The principal Pacific Fishery Management Areas (PFMA's) for green sea urchins are 12, 13 (Queen Charlotte and Johnstone Straits) and 18, 19, 20 (Gulf Islands-Juan de Fuca Strait). Harvest logbook information was examined, and required extensive editing. Information on CPUE was derived from the harvest logbook data, and separated into northern and southern regions of the South Coast `Inside Waters' (inside waters of Vancouver Island) to distinguish the major fishing areas. A biomass dynamic model was developed for the northern region (PFMA's 11 to 16) with an estimated maximum sustainable yield (MSY) of 257 t. A scaling factor was developed to estimate the MSY for each PFMA. Considering the uncertainties in the input CPUE data and its persistent downward trend, and the weaknesses of the dynamic production model, caution is advised in the management of this stock. Yield options range from 0 (no fishing) to 0.5-0.6 of MSY for each PFMA. This provides estimates of 185-222 t for the South Coast and 24.4-29.3 t for the North Coast, although few data are available for this latter region. Recommendations are provided on improvements to the harvest logbook process and database, quotas, and provisions of fishery-independent and biological information. DESCRIPTORS: Echinoderm-fisheries; Fishery-statistics; Quota-regulations; Depleted -stocks; Fishery-management; Stock-assessment; Resource-conservation; Echinodermata-; Strongylocentrotus-droebachiensis; INE,-Canada,-British -Columbia CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CA9900552 ACCESSION NUMBER: 4584468 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2052716 Location: Fish-Ocean Microforms -- Call number: Microfiche MB-303 -- LIB HAS: no.927- (1980 -) -- Incomplete; Some only available in print format Location: Fish -Ocean Stacks -- Call number: SH1 .C352 -- LIB HAS: no.925- (1980-) -- Incomplete; Some volumes listed separately; Some only in microfiche Record 23 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Invertebrate Working Papers reviewed by the Pacific Stock Assessment Review Committee (PSARC) in 1995. Part 2. Echinoderms AUTHOR(S): Waddell,-B.J.-(eds); Gillespie-G.E.-(eds.); Walthers,-L.C.-(eds.) CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Nanaimo, BC [Canada] Sci. Branch SOURCE (BIBLIOGRAPHIC CITATION): Can-Tech-Rep-Fish-Aquat-Sci; Rapp-Tech-Can-Sci-Halieut-Aquat 1998 no. 2215, 173 pp INTERNATIONAL STANDARD NUMBERS: ISSN 0706-6457 NOTES: NTIS-Accession Number: MIC-99-05678. PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Working Papers prepared in 1995 by Fisheries and Oceans Canada staff, First Nations and industry representatives that were reviewed by the Pacific Stock Assessment Review Committee (PSARC) are presented. These documents form the basis of biological advice given to managers for the development of fishing plans for 1996. Topics included: three surveys for red sea urchins (Strongylocentrotus franciscanus) conducted in 1994; reanalysis of four red sea urchin surveys conducted in 1993; protocols for sea urchin surveys; quota estimates for the 1996 red sea urchins fishery; quota recommendations for the 1995/96 green sea urchin (Stongylocentrotus droebachiensis); and quota options for the sea cucumber (Parastichopus californicus) fishery. DESCRIPTORS: Echinoderm-fisheries; Fishery-surveys; Stock-assessment; Fishery -management; Quota-regulations; Echinodermata-; Strongylocentrotus -franciscanus; Strongylocentrotus-droebachiensis; INE,-Canada,-British -Columbia CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CA9900545 ACCESSION NUMBER: 4584461 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2052716 Location: Fish-Ocean Microforms -- Call number: Microfiche MB-303 -- LIB HAS: no.927- (1980 -) -- Incomplete; Some only available in print format Location: Fish -Ocean Stacks -- Call number: SH1 .C352 -- LIB HAS: no.925- (1980-) -- Incomplete; Some volumes listed separately; Some only in microfiche Record 24 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effect of food availability and body size on out-of-season gonad yield in the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Department of Fisheries and Natural Science, Bodoe College, N-8002 Bodoe, Norway CONFERENCE INFORMATION: Special Session: Sea Urchin Aquaculture: Molecules to Markets, Las Vegas, NV (USA), 16-19 Feb 1998 SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Shellfish-Research 1998 vol. 17, no. 5, pp. 1533-1539 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article); K (Conference) ABSTRACT: The out-of-season gonad yield of the green sea urchin, Strongylocentrotus droebachiensis, was low in barren ground habitats, intermediate in kelp forest habitats, and high in laboratory tanks supplied with fresh kelp, Laminaria hyperborea and L. digitata. In August, the laboratory population had already attained gonad sizes comparable with the prespawning maximum of sea urchins from kelp habitats. Analysis of covariance (ANCOVA) suggested that both absolute gonad mass and relative gonad mass (gonad index) were increasing functions of urchin size. However, both cubic polynomial regression and graphical analyses detected a curvilinear relationship with a tendency toward decreasing gonad mass in the largest animals in the laboratory population and in the barren ground population. The tendency toward decreased gonad yield in the largest animals is consistent with a hypothesis of size-dependent reproductive senility. The practical implication for future echiniculture operations is that there seems to be a physiologically determined optimum size where gonad yield is maximized. The present data suggest that this optimum size is located in the 55 to 60 mm size interval. In this size interval, the laboratory population had approximately twofold larger gonad mass than the kelp population and approximately threefold larger gonad mass than the barren ground population. DESCRIPTORS: Food-availability; Animal-reproductive-organs; Roes-; Marine-aquaculture; Kelps-; Gonads-; kelp-; Strongylocentrotus-droebachiensis; Laminaria -hyperborea; Laminaria-digitata CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584; Aquaculture-Fisheries: -Shellfish-culture-mollusks,-crustacea-4320 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3); ASFA-Marine-Biotechnology-Abstracts (Q4) INPUT CENTER NUMBER: CS9913029 ACCESSION NUMBER: 4536202 UPDATE CODE: 199909 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 25 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Field estimates of growth and mortality of the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): Russell,-M.P.; Ebert,-T.A.; Petraitis,-P.S. AUTHOR AFFILIATION: Biology Department, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085-1699, USA SOURCE (BIBLIOGRAPHIC CITATION): Ophelia 1998 vol. 48, no. 2, pp. 137-153 INTERNATIONAL STANDARD NUMBERS: ISSN 0078-5326 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Growth and annual mortality rates of the green sea urchin, Strongylocentrotus droebachiensis, were estimated by marking individuals with fluorescent tags, releasing them in the field, and collecting them 1 year later. In 1994, 533 animals were tagged in 7 tidepools and in 1995, 458 were collected of which 262 were tagged. Tanaka function growth parameters were estimated for the demi-pyramids, or "jaws," one of the ossicles of Aristotle's lantern. Estimates of annual test diameter growth were attained by calculating the allometric relationship between jaw and test diameter. By assuming size at settlement (0.5 mm test diameter) is age zero, and using the size specific growth rates, the relationship between test diameter and age was established. Our results indicate that these animals are long lived and slow growing. The largest sea urchins in our samples may be more than 50 years. The difference in size between tagged and untagged sea urchins in the 1995 collections strongly suggests that smaller individuals may tend to migrate more than larger ones. DESCRIPTORS: Tags-; Longevity-; Age-determination; Growth-curves; Mortality-; Strongylocentrotus-droebachiensis; Echinoidea- IDENTIFIERS: Heart-urchins; Sand-dollars; Sea-urchins CLASSIFICATIONS: Population-studies:-Population-dynamics-1442; Invertebrate-biology: -Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9907302 ACCESSION NUMBER: 4478817 UPDATE CODE: 199906 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2024112 Location: Fish-Ocean Stacks -- Call number: 591.9205 OP -- LIB HAS: v.1- (May 1964-) -- LATEST ISSUES IN DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Ophelia -- Call number: 591.9205 OP -- LIB HAS: v.1- (May 1964 -) Location: NatSci Periodicals -- Call number: 591.9205 OP -- LIB HAS: v.1-21 (May 1964-1982) Record 26 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Annual reproductive cycle of the green sea urchin, Strongylocentrotus droebachiensis, in differing habitats in Nova Scotia, Canada AUTHOR(S): Meidel,-S.K.; Scheibling,-R.E. AUTHOR AFFILIATION: Department of Biology, Dalhousie University Halifax, NS B3H 4J1 Canada SOURCE (BIBLIOGRAPHIC CITATION): Mar-Biol 1998 vol. 131, no. 3, pp. 461-478 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Incl. bibliogr.: 64 refs. PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: We monitored the reproductive cycle of Strongylocentrotus droebachiensis between April 1993 and August 1995 in kelp beds, barren grounds and grazing fronts at both a wave-exposed and a sheltered site along the Atlantic coast of Nova Scotia. Gonad index and histological analyses showed that S. droebachiensis has an annual reproductive cycle that is synchronous across sites and habitats, and between females and males. Spawning occurs in March /April of each year but a small proportion of sea urchins in the study populations also spawned in fall 1995. During most of the year, sea urchins in kelp beds and grazing fronts have a higher gonad index than those in barren grounds. Gonad indices also tended to be higher at the wave-exposed than the sheltered site. Interannual variability in peak gonad index was significant in the barren grounds at the wave-exposed site and in the grazing front at the sheltered site. The gametogenic cycle is characterized by six stages based on the abundance of nutritive and germinal/gametic cells. Nutritive phagocytes are abundant after spawning and replaced by increasing numbers of germinal and gametic cells as the gametogenic cycle progresses. The temporal patterns of abundance of each cell type were similar among habitats indicating that the gonads were qualitatively similar despite large differences in gonadal mass. The quantity of gut contents (ratio of food volume to body volume) was similar among habitats, but the quality (percentage of organic material) tended to be higher in kelp beds and grazing fronts than in barren grounds suggesting that differences in gonad index of S. droebachiensis in different habitats are related to differences in diet. The high density of sea urchins in grazing fronts combined with their high fecundity suggests that they make the greatest contribution, per unit area, to the overall larval pool. DESCRIPTORS: Sexual-reproduction; Habitat-selection; Spawning-seasons; Food-consumption; Strongylocentrotus-droebachiensis; ANW,-Canada,-Nova-Scotia IDENTIFIERS: subpopulations-; histology-; statistical-analysis; annual-variations; gametogenesis-; sex-ratio CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9900678 ACCESSION NUMBER: 4515870 UPDATE CODE: 199906 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 27 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Feasibility of urchin aquaculture in a cage system AUTHOR(S): Moody,-M.; Phillips,-K.; Torregiani,-J.; Kubinec,-E.; Villeneuve,-J.; Stanley,-C. CORPORATE AUTHOR(S): New Hampshire Univ., Durham (USA). Sea Grant Program SOURCE (BIBLIOGRAPHIC CITATION): 59pp, LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The Feasability of Urchin Aquaculture in a Cage System was a student research and design project that studied the bulking process of urchins in several proposed systems. Sea urchin roe has long been considered a delicacy in both Japan and France. Due to overfishing in their waters the Japanese are now forced to import urchins to meet the demands of the market. Because of the situation in Japan, harvesting urchins became a profitable fishery in the northeastern United States. In the 1980s this led to a local decline in the green sea urchin, Strongylocentrotus droebachiensis, population. DESCRIPTORS: Experimental-culture; Cage-culture; Population-dynamics; Commercial -species; Overfishing-; Sea-urchin-culture; Strongylocentrotus -droebachiensis; ANW,-USA,-New-England CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: NO9900909 ACCESSION NUMBER: 4483822 UPDATE CODE: 199906 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 28 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Does Bateman's principle apply to broadcast-spawning organisms? Egg traits influence in situ fertilization rates among congeneric sea urchins AUTHOR(S): Levitan,-D. AUTHOR AFFILIATION: Department of Biological Science, Florida State University, Tallahassee, Florida 32306-1100, USA; E-mail: levitan@bio.fsu.edu SOURCE (BIBLIOGRAPHIC CITATION): Evolution 1998 vol. 52, no. 4, pp. 1043-1056 INTERNATIONAL STANDARD NUMBERS: ISSN 0014-3820 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ABSTRACT: Evolutionary biologists generally invoke male competition and female choice as mechanisms driving sexual selection. However, in broadcast-spawning organisms sperm may be limiting and females may compete, in the Darwinian sense, for increased mating success. In this study, I investigate how species differences in egg and sperm traits result in different patterns of fertilization among three closely related sea urchins (Strongylocentrotus purpuratus, S. franciscanus, and S. droebachiensis). Field studies demonstrate that all three species achieve similar percentages of eggs fertilized when eggs and sperm are released simultaneously. However, when sperm must disperse before encountering eggs, differences arise among species such that those with the smaller eggs and faster but shorter-lived sperm achieve relatively fewer fertilizations than do species with larger eggs and slower but longer -lived sperm. A field hybridization experiment, field estimates of sperm dispersal, correlations of egg size to field rates of fertilization, laboratory studies of fertilization kinetics, and a simulation model all suggest that it is attributes of the egg (probably egg size) that are responsible for the differences. These patterns of fertilization match the species' patterns of dispersion; species that do well only when sperm and eggs are released in close proximity are more aggregated, species that do relatively well when sperm and eggs are released farther apart are more dispersed. These results are consistent with the notion that eggs of different species are adapted to maximize reproductive success under different degrees of sperm limitation and suggest that male competition and female choice may not be an appropriate dichotomy in broadcast -spawning organisms. DESCRIPTORS: Marine-invertebrates; Reproductive-behaviour; Sexual-reproduction; Spawning -; Biological-fertilization; Sperm-; Eggs-; Evolution-; Breeding-success; Competition-; Mate-selection; Fertilization-; Sexual-selection; Sperm -competition; egg-size; Strongylocentrotus-purpuratus; Strongylocentrotus -franciscanus; Strongylocentrotus-droebachiensis; Strongylocentrotus- IDENTIFIERS: sperm-dispersal; Sea-urchins CLASSIFICATIONS: Invertebrate-biology:-Genetics-and-evolution-1245 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9904069 ACCESSION NUMBER: 4443269 UPDATE CODE: 199906 LIBRARY HOLDINGS MESSAGE: Connect to 2000+ issues of this title online; UW restricted; http://www.bioone.org/bioone/?request=get-journals-list&issn=0014-3820 Connect to older issues of this title online; UW restricted; http://www.jstor.org/journals/00143820.html Connect to this title online (trial basis) http://evol.allenpress.com/evolonline/?request=index -html See records of latest issues received http://catalog.lib.washington.edu/record=b2045248 Location: null -- Call number: 575.05 EV -- LIB HAS: v.18-51 (1964-1997) Location: Available Online Location: Available Online Location: Available Online Location: FriHarbor Periodicals -- Shelved by title: Evolution -- Call number: QH366.A1 E88 -- LIB HAS: v.23- (1969-) Location: NatSci Periodicals -- Call number: 575.05 EV -- LIB HAS: v.1- (1947-) -- LATEST ISSUES ON DISPLAY; LIBRARY USE ONLY (V.50- 1996-) Location: Tacoma Microforms - - Call number: Microfilm TAC-374 -- LIB HAS: v.45- (1991-) Location: Tacoma Periodicals -- Call number: QH366.A1 E88 -- LIB HAS: v.50 no.6, v.51 no.1-3, 5-6, v.52- (1996, 1997, 1998-) Record 29 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Stock assessment and quota recommendations for 1996/97 for the green sea urchin fishery in British Columbia AUTHOR(S): Perry,-R.I.; Waddell,-B.J. AUTHOR AFFILIATION: Pacific Biological Station, Fisheries and Oceans Canada Nanaimo, BC V9R 5K6 Canada CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Nanaimo, BC [Canada] Sci. Branch SOURCE (BIBLIOGRAPHIC CITATION): Invertebrate-Working-Papers-reviewed-by-the-Pacific-Stock-Assessment-Review -Committee-PSARC-in-1996 Gillespie-G.E.-(eds.); Walthers,-L.C.-(eds.) 1998 no. 2221, pp. 261-307 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-6457 SERIES TITLE/INFORMATION: Can-Tech-Rep-Fish-Aquat-Sci; Rapp-Tech-Can-Sci-Halieut-Aquat PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The fishery for green sea urchins (Strongylocentrotus droebachiensis) on the British Columbia coast developed rapidly from 1987 to 1991, and peaked in 1992 with landings of 1042 t. Declining landings and catch per unit effort followed and management restrictions were implemented in 1992. In 1995, coastwide landings were 159.3 t, with South Coast landings of 153 t, slightly below the quota of 173.4 t. The principal Pacific Fishery Management Areas for green sea urchins are 12, 13 (Queen Charlotte and Johnstone Straits) and 18, 19, 20 (Gulf Islands -- Juan de Fuca Strait). The objectives of the current stock assssment are 1) to provide an anlaysis of the green sea urchin fishery in British Columbia by comparing information on fishing season and calendar year basis, and by updating the historical fish slip and harvest logbook information with data from the October 1995 - March 1996 fishing season; 2) to update the biomass dynamic production model with data on a fishing season basis, including the 1995 -1996 fishery, and to provide recommendations for harvest yields; and 3) to present results from the fishery-independent surveys and the exploratory fishing activity, and to compare these with estimates from the biomass dynamic model. DESCRIPTORS: Echinoderm-fisheries; Fishery-management; Stock-assessment; Catch-effort; Quota-regulations; Echinodermata-; Strongylocentrotus-droebachiensis; INE, -Canada,-British-Columbia CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CA9900078 ACCESSION NUMBER: 4472746 UPDATE CODE: 199903 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2052716 Location: Fish-Ocean Microforms -- Call number: Microfiche MB-303 -- LIB HAS: no.927- (1980 -) -- Incomplete; Some only available in print format Location: Fish -Ocean Stacks -- Call number: SH1 .C352 -- LIB HAS: no.925- (1980-) -- Incomplete; Some volumes listed separately; Some only in microfiche Record 30 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Invertebrate Working Papers reviewed by the Pacific Stock Assessment Review Committee (PSARC) in 1996 AUTHOR(S): Gillespie-G.E.-(eds.); Walthers,-L.C.-(eds.) CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Nanaimo, BC [Canada] Sci. Branch SOURCE (BIBLIOGRAPHIC CITATION): Can-Transl-Fish-Aquat-Sci; Traduct-Can-Sci-Halieut-Aquat 1998 no. 2221, 344 pp INTERNATIONAL STANDARD NUMBERS: ISSN 0704-3716 NOTES: NTIS-Accession Number: MIC-99-02027. PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Working Papers prepared in 1996 by Fisheries and Oceans Canada staff and reviewed by the Pacific Stock Assessment Review Committee (PSARC) are presented. These documents form the basis of biological advice given to managers for the development of fishing plans for 1997. Topics included: a framework for developing scientific advice for data-limited invertebrate fisheries; evaluation of survey methods and biological sampling requirements for geoducks (Panopea abrupta); quota options for the 1997 and 1998 geoduck fisheries; assessment of prawn (Pandalus platyceros) stocks in Statistical Area 12; assessment of inshore shrimp fisheries; studies of euphausiid populations in Jervis Inlet and Barkley Sound; quota recommendations for the 1996/97 green sea urchin (Strongylocentrotus droebachiensis) fisheries; and advice for management of the sea cucumber (Parastichopus californicus) fishery DESCRIPTORS: Stock-assessment; Fishery-management; Biological-sampling; Quota -regulations; Invertebrata-; Panopea-abrupta; Pandalus-platyceros; Strongylocentrotus-droebachiensis; Parastichopus-californicus; INE, -Canada,-British-Columbia CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CA9900071 ACCESSION NUMBER: 4472739 UPDATE CODE: 199903 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 31 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effects of location, exposure and physical structure on juvenile recruitment of the sea urchin Strongylocentrotus droebachiensis in the Gulf of Maine AUTHOR(S): Harris,-L.G.; Chester,-C.M. AUTHOR AFFILIATION: Zoology Department, University of New Hampshire Durham, NH 03824 USA; E -mail: lharris@christa.unh.edu SOURCE (BIBLIOGRAPHIC CITATION): Invertebr-Reprod-Dev 1996 vol. 30, no. 1-3, pp. 207-215 INTERNATIONAL STANDARD NUMBERS: ISSN 0168-8170 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Studies of juvenile recruitment of the green sea urchin Strongylocentrotus droebachiensis in the Gulf of Maine were conducted during the summer of 1995. These experiments confirmed 12 years of previous observations that settlement only occurs during the months of June and July. Settlement panels were placed at a series of sites along the Maine and New Hampshire coastline to compare recruitment in the northeastern and southwestern regions of the Gulf of Maine. The densities of urchins recruiting in Casco Bay and at the Isles of Shoals were two orders of magnitude higher than those from Eastport and Winter Harbor. There was a discontinuity in settlement densities at Penobscot Bay. Experiments conducted at the Isles of Shoals showed a positive relationship between water motion and larval supply, but neither parameter correlated with recruitment density over eight stations. Contrary to previous results, recruitment was greater within natural, as well as, artificial kelp beds compared to urchin barren areas and control panels outside the experimental kelp beds. The impact of changing community structure due to urchin harvesting was discussed as an factor influencing differences in juvenile urchin recruitment. DESCRIPTORS: Recruitment-; Marine-molluscs; Water-motion; Kelps-; Aquatic-communities; Strongylocentrotus-droebachiensis; ANW,-Maine-Gulf CLASSIFICATIONS: Autecology:-Environmental-effects-1422; Invertebrate-biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: MB9890312 ACCESSION NUMBER: 4448366 UPDATE CODE: 199903 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2064372 Location: FriHarbor Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984 -1988) Location: NatSci Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984-1988) Record 32 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Experimental transmission of the Nematode Echinomermella matsi to the sea urchin Strongylocentrotus droebachiensis in the laboratory AUTHOR(S): Stien,-A.; Halvorsen,-O. AUTHOR AFFILIATION: Zoological Museum, University of Oslo, Sarsgate 1, N-0562 Oslo, Norway SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Parasitology [J-Parasitol] 1998 vol. 84, no. 3, pp. 658-660 INTERNATIONAL STANDARD NUMBERS: ISSN 0022-3395 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Three experiments were conducted to investigate the possibility of maintaining the Echinomermella matsi-Strongylocentrotus droebachiensis system in the laboratory. The experiments were performed by injecting E. matsi larvae taken directly from gravid female nematodes into the mouths of sea urchins. In all experiments, this treatment resulted in a higher infection in treated animals than in unmanipulated controls. The successful establishment of larvae indicates that E. matsi has a monoxenous life cycle. The growth of larvae in experimentally infected hosts was slow, indicating that the generation time of the parasite is of the same magnitude as the life expectancy of the host, 1-2 yr. This slow growth rate suggests that considerable resources will be needed to maintain the system in the laboratory. DESCRIPTORS: Parasitic-diseases; Disease-transmission; Host-preferences; Life-history; Laboratory-culture; Life-cycle; Echinomermella-matsi; Strongylocentrotus -droebachiensis CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9825716 ACCESSION NUMBER: 4392084 UPDATE CODE: 199903 LIBRARY HOLDINGS MESSAGE: Connect to 2000+ issues of this title online; UW restricted; http://www.bioone.org/bioone/?request=get-journals-list&issn=0022-3395 See records of latest issues received http://catalog.lib.washington.edu/record=b2037889 Location: Available Online Location: FriHarbor Periodicals -- Shelved by title: Journal parasitology -- Call number: 591.69 JO -- LIB HAS: v.1-83 (1914-1997) - - Incomplete v.33 Location: NatSci Periodicals -- Call number: 591.69 JO -- LIB HAS: v.1- (1914-) Record 33 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Population dynamics of the Echinomermella matsi (Nematoda) - Strongylocentrotus droebachiensis (Echinoida) system: Effects on host fecundity AUTHOR(S): Stien,-A.; Leinaas,-H.P.; Halvorsen,-O.; Christie,-H. AUTHOR AFFILIATION: Institute of Terrestrial Ecology, Hill of Brathens, Glassel, Banchory, Kincardineshire AB31 4BY, UK SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Ecol.-Prog.-Ser. 1998 vol. 163, pp. 193-201 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: At high population densities the green sea urchin Strongylocentrotus droebachiensis can affect subtidal community structure significantly by grazing down kelp beds to barren grounds. The parasitic nematode Echinomermella matsi has been suggested to reduce sea urchin population densities at barren ground localities, thereby giving rise to kelp recovery and possibly a cyclic behaviour between these states. Here, we evaluated the potential of E. matsi to affect host population dynamics through effects on host fertility. This was done by estimating the effect of infection on the host population gonad mass at 4 localities, ranging from barren ground to a kelp bed. The relationship between sea urchin gonad wet weight, sea urchin size and worm burden was modelled statistically. From this model we estimated the effect of infection at the host population level. We found a strong negative relationship between gonad wet weight of sea urchins and the wet weight of their nematode infrapopulations. In some animals this reduction in gonad development was estimated to be 100%, indicating functional castration. At the host population level, the relative reduction in gonad mass due to infection was less than 10% at all sample sites, and was in the same range both in the kelp forest and on the barren grounds. The main reason for this low population effect of infection is that most sea urchins carry low worm burdens, which will have a small effect on host gonads. Compared to the effect of inter-site differences in sea urchin size on mean gonad sizes, the effect of infection on mean gonad size was found to be small. We therefore suggest that processes that determine sea urchin size distributions, such as survival and growth, are likely to be more important in the determination of local reproductive potential than direct effects of infection on gonad development. DESCRIPTORS: Symbiosis-; Population-density; Grazing-; Hosts-; Parasitism-; Size -distribution; Animal-reproductive-organs; Wet-weight; Echinomermella -matsi; Strongylocentrotus-droebachiensis; ANE,-Norway CLASSIFICATIONS: Population-studies:-Population-dynamics-1442 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: BF9802160 ACCESSION NUMBER: 4419320 UPDATE CODE: 199812 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 34 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Manipulation of food and photoperiod promotes out-of-season gametogenesis in the green sea urchin, Strongylocentrotus droebachiensis: Implications for land-based aquaculture AUTHOR(S): Walker,-C.W.; Lesser,-M.P. AUTHOR AFFILIATION: Department of Zoology and Center for Marine Biology, University of New Hampshire, Durham, NH 03824, USA CONFERENCE INFORMATION: Aquaculture '98, Las Vegas, Nevada (USA), 15-19 Feb 1998 SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Shellfish-Research 1998 vol. 17, no. 1, p. 340 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ABSTRACT: In this study, we have produced green sea urchins (Strongylocentrotus droebachiensis OF Mueller) in which gametogenesis and large gonad size occurred earlier in the year than normal. This was accomplished by providing urchins with an abundant supply of pellitized food prior to and during gametogenesis and by premature exposure to autumn photoperiod. Urchins were collected in February, 1995 from new Hampshire waters and were maintained for 7 months in a land-based facility under artificial illumination. For the first 2 months, urchins were held under summer photoperiod and were fed a commercially available food. These urchins showed a significant increase in the size of their gonads (gonad index, GI greater than or equal to 25%) compared with urchins collected concurrently from the field (GI = 10-15%). Stereological and histological examination of gonads during this time indicated that the increase in size resulted from growth of nutritive phagocytes, which are somatic nutrient storage cells in the germinal epithelium. Spermatogonial or oogonial mitoses were not observed. Urchins fed in this way were then exposed to autumn photoperiod, an environmental cue correlated with initiation of gametogenesis in many shallow water echinoderms. DESCRIPTORS: Gametogenesis-; Marine-aquaculture; Food-availability; Man-induced-effects; Light-effects; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9818954 ACCESSION NUMBER: 4364722 UPDATE CODE: 199812 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 35 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Over exploitation of the urchin fishery: Does history repeat itself and is there anything we can to do to insure a sustainable yield to the market AUTHOR(S): Lesser,-M.P.; Walker,-C.W. AUTHOR AFFILIATION: Department of Zoology and Center for Marine Biology, University of New Hampshire, Durham, NH 03824, USA CONFERENCE INFORMATION: Aquaculture '98, Las Vegas, Nevada (USA), 15-19 Feb 1998 SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Shellfish-Research 1998 vol. 17, no. 1, p. 331 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The fishery for the green sea urchin (Strongylocentrotus droebachiensis) has rapidly grown to become the second largest in the Northeastern United States behind lobsters. Despite the historical precedent for over exploitation and management of the West coast fishery for strongylocentrotid urchins, overfishing has drastically depleted once abundant natural populations in the Gulf of Maine. Two other problems affect the commercial industry. One of these is poor roe quality in a large percentage of the urchins harvested, leading to a lower than maximum price. Another is the short period when roe quality is high. There is a window of time from September until February when urchins have firm, ripe gonads. To address these issues we have coupled: 1) enhancement of gonadal growth of poorly fed urchins utilizing a prepared, commercially available, food with 2) photoperiodic manipulation of the gametogenic cycle to produce a second annual crop of high quality urchins in a land-based aquaculture facility. Additionally, we have begun a study to characterize the photoperiod cue using molecular techniques in order to understand, and improve for land-based aquaculture, the initiation of gametogenesis in sea urchins. DESCRIPTORS: Overfishing-; Aquaculture-development; Fishery-management; Fishery -economics; Feeding-experiments; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Aquaculture:-Culture -of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9818928 ACCESSION NUMBER: 4364696 UPDATE CODE: 199812 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 36 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effects of temperature and food ration on gonad growth and gametogenesis of the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): Garrido,-C.L.; Barber,-B.J. AUTHOR AFFILIATION: School of Marine Sciences, 5735 Hitchner Hall, University of Maine, Orono, ME 04469-5735, USA CONFERENCE INFORMATION: Aquaculture '98, Las Vegas, Nevada (USA), 15-19 Feb 1998 SOURCE (BIBLIOGRAPHIC CITATION): Journal-of-Shellfish-Research 1998 vol. 17, no. 1, p. 325 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-8000 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ABSTRACT: The green sea urchin (Strongylocentrotus droebachiensis) fishery is the second largest in Maine next to the lobster fishery. However, there is concern about its future because overfishing has dramatically depleted natural populations. Understanding the process of gonad (roe) formation and the environmental factors that affect it is a fundamental step for the development of green sea urchin aquaculture, which would allow the year -round exploitation of roe despite the shortage of natural stocks. Field -based studies have shown that green sea urchins follow an annual reproductive cycle: gonad indices are lowest in the summer months, and they increase through the fall to peak values in late winter/early spring. The occurrence of this annual cycle suggests that water temperature might be an important factor influencing gametogenesis; however, other co -variant factors, such as food supply and photoperiod, might act in conjunction with the annual temperature cycle to elicit the same response. Our study was designed to determine the effects of water temperature and food ration on gonad growth and gametogenesis of the green sea urchin. Green sea urchins collected during December 1996 (gonad index = 11%) were submitted for three months to the following temperature and food ration regimes: a) 3 plus or minus 1 degree C and fed ad libitum; b) 3 plus or minus 1 degree C and fed 1/7 of the maximum ration; c) 12 plus or minus 1 degree C and fed ad libitum; d) 12 plus or minus 1 degree C and fed 1/7 of the maximum ration. DESCRIPTORS: Marine-aquaculture; Gametogenesis-; Feeding-experiments; Fecundity-; Temperature-effects; Food-availability; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9818913 ACCESSION NUMBER: 4364681 UPDATE CODE: 199812 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 37 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Resource allocation plasticity in sea urchins: Rapid, diet induced, phenotypic changes in the green sea urchin, Strongylocentrotus droebachiensis (Mueller) AUTHOR(S): Russell,-M.P. AUTHOR AFFILIATION: Biol. Dep., Villanova Univ., Villanova, PA 19085-1699, USA SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1998 vol. 220, no. 1, pp. 1-14 INTERNATIONAL STANDARD NUMBERS: ISSN 0022-0981 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The gonads of sea urchins have a dual function: reproduction and nutrient storage. In general, these animals are secondarily sessile and cannot easily migrate from areas of low resource availability to areas of high resource availability. Given these conditions, an experiment was performed to test the hypothesis that sea urchins (Strongylocentrotus droebachiensis Mueller) from an area of low food quality could rapidly increase gonadal tissue in response to a sudden increase of high quality food. Sea urchins were collected from a site that lacked preferred algae on Swans Island, Maine. Initially, animals were dissected to determine the percentage of the various body components. The remaining animals were distributed among four groups of equal number and size distribution. Each group was assigned randomly to 1 of 4 feeding treatments: Alaria esculenta, Laminaria digitata, Laminaria longicruris, and Ascophyllum nodosum. Animals were fed ad libitum during the experiment. Half of the sea urchins from each treatment were dissected after 3 weeks and the rest after 6 weeks. Significant differences were found among the treatments at both the 3 and 6 weeks dissections with A. esculenta producing the greatest increase in gonad wet weight. For the 6 weeks dissections there appeared to be a compensatory loss of perivisceral fluid in sea urchins that increased gonadal tissue. No differences among treatments were found for the body wall, Aristotle's lantern, or gut body components. Synthesizing these results with studies of other closely related species reveals a dynamic picture of resource allocation and phenotypic plasticity in sea urchins. Environmental variation can induce morphological change in sea urchins and these modifications have been described as graded reaction norms. The results presented here show that the temporal responses of the reaction norms of the various body components are graded and different components vary in response time. DESCRIPTORS: resource-allocation; phenotypic-plasticity; food-quality; Food -availability; Body-conditions; Phenotypic-variations; Animal-reproductive -organs; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9817914 ACCESSION NUMBER: 4348676 UPDATE CODE: 199809 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/00220981 Connect to this title online; UW restricted http://www.elsevier.com/locate/jembe See records of latest issues received http://catalog.lib.washington.edu/record=b2008200 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Journal experimental marine biology ecology -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) Record 38 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Ecology of rocky subtidal communities: The role of Modiolus modiolus (L) and the influence of disturbance, competition, and mutualism AUTHOR(S): Witman,-J.D. AUTHOR AFFILIATION: New Hampshire Univ., Durham, NH 03824-3547 USA SOURCE (BIBLIOGRAPHIC CITATION): DISS.-ABST.-INT.-PT.-B-SCI.-and-ENG. 1985 vol. 45, no. 9, 214 pp NOTES: Diss. Ph.D. Order No. FAD DA8428162. PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); U (Thesis-or-Dissertation) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: This study presents an analysis of physical and biological processes regulating the structure of rocky subtidal communities off coastal New Hampshire and southern Maine, USA, with emphasis on the ecology of the horse mussel Modiolus modiolus (L.). Quantitative sampling and multivariate analysis revealed 3 communities: (1) Modiolus community; (2) 30 m community of species with highest densities outside mussel beds; (3) 8-18 m community of species with maximal densities outside mussel beds. Controlled field experiments, a natural grazing experiment, and long-term photographic monitoring (5 yrs) enabled patterns of Modiolus community structure to be related to the processes maintaining them. Bivalve, ophiuroid, and echinoid prey outside, but not inside, Modiolus beds were consumed by fish, crab, and lobster predators demonstrating that Modiolus beds provide a refuge from predation. The sea urchin Strongylocentrotus droebachiensis was the most significant agent of biological disturbance; urchin aggregations overgrazed the 8 m benthos causing radical changes in species composition, dominance, species richness, and diversity outside mussel beds. Infaunal assemblages within Modiolus beds changed the least because mussel bed structure damped the impact of overgrazing. At exposed offshore sites, dense populations of Modiolus modiolus occurred at intermediate depths (11-18 m) but not at shallow depths (4-8 m) dominated by kelp (Laminaria digitata, Laminaria saccharina). Experiments indicated that chronic storm-generated disturbance caused massive dislodgement of mussels competitively overgrown by kelp, and could account for the scarcity of Modiolus at shallow depths. The hypothesis that by grazing kelp off mussels urchins decrease the risk of mussel dislodgement was tested by an urchin removal experiment. The removal of urchins from mussel beds led to exponential kelp recruitment, resulting in a 30-fold increase of mussel mortality (via kelp-induced dislodgement), compared to control beds with urchins. The Modiolus-Strongylocentrotus interaction is mutualistic, as mussels provide a refuge from predation for urchins. Thus, coexistence of kelp and mussel competitors is facilitated by mutualism. Patch recolonization experiments showed that kelps dominated all algal turf patches and 47% of mussel patches within 7 months. In contrast, Modiolus did not recover from simulated dislodgement disturbance, suggesting that the ability of kelps to bounce back from disturbance enhances their competitive superiority (DBO). DESCRIPTORS: Rocky-shores; Community-composition; Benthos-; Kelps-; Ecosystem -disturbance; Recruitment-; Population-structure; Modiolus-modiolus; ANW, -USA,-Maine; ANW,-USA,-New-Hampshire CLASSIFICATIONS: Aquatic-communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9812382 ACCESSION NUMBER: 4303320 UPDATE CODE: 9806 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 39 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Geographic and environmental factors affecting the distribution of kelp beds and barren grounds and changes in biota associated with kelp reduction at sites along the Norwegian coast AUTHOR(S): Sivertsen,-K. AUTHOR AFFILIATION: The Norwegian College Fishery Science,University Tromsoe, N-9037 Tromsoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): Can.-J.-Fish.-Aquat.-Sci.-J.-Can.-Sci.-Halieut.-Aquat. 1997 vol. 54, no. 12, pp. 2872-2887 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Sites at 244 locations along the west and north Norwegian coasts were investigated to evaluate whether kelp (Laminaria hyperborea) beds had been overgrazed by the sea urchins Strongylocentrotus droebachiensis and Echinus escelentus in the years 1981-1992. Barren ground communities were found in sheltered and moderately wave-exposed areas mainly in the inner and middle archipeligo from Nordmoere northwards. Densities of large-sized (adult and intermediate) L. hyperborea were 20.7 individuals.m super(-2) in kelp beds, 3.6 individuals.m super(-2) in transition areas. Juvenile Laminaria spp. were present at densities of 23.9 individuals.m super(-2) in kelp beds, 3.6 individuals.m super(-2) in transition areas, 0.0 individuals.m super(-2) in barren grounds, and 59.1 individuals.m super( -2) in kelp-harvested locations. Both the densities and the mean size of S. droebachiensis in barren grounds decreased northwards. The mean densities were 52.2 and 26.1 individuals.m super(-2) for the areas south and north of the Arctic Circle, respectively. Multivariate analysis (CANOCO) showed that 7 environmental factors (i.e., kelp depth gradient, distance(latitude), time of sampling, nematode infection in S. droebachiensis, wave exposure, coastal gradient, and substratum) contributed significantly to variability in the distribution of kelp beds and barren grounds. Species in hardbottom communities in shallow waters could be divided into three distinct BIOTA. DESCRIPTORS: Kelps-; Plant-populations; Aquatic-plants; Distribution-records; Ecological -distribution; Environmental-factors; Grazing-; Ecological-succession; Laminaria-hyperborea; Echinus-esculentus; Strongylocentrotus -droebachiensis; ANE,-Norway; PNE,-Norway CLASSIFICATIONS: Botany:-Geographical-distribution-1222; Autecology:-Environmental-effects -1422 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE); Polar-Arctic-Eastward (PNE) INPUT CENTER NUMBER: CA9800139 ACCESSION NUMBER: 4280773 UPDATE CODE: 9806 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 40 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effects of maternal and larval nutrition on growth and form of planktotrophic larvae AUTHOR(S): Bertram,-D.F.; Strathmann,-R.R. AUTHOR AFFILIATION: Friday Harbor Labs., Univ. Washington, 620 University Rd., Friday Harbor, WA 98250-9299, USA SOURCE (BIBLIOGRAPHIC CITATION): ECOLOGY 1998 vol. 79, no. 1, pp. 315-327 INTERNATIONAL STANDARD NUMBERS: ISSN 0012-9658 PUBLICATION YEAR: 1998 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Maternal nutritional stress lowers the organic content of eggs and slows the initial growth of larvae of sea urchins and bivalves. Also, larval nutritional stress changes the form and developmental sequence of larvae as an adjustment to scarce food. If effects of nutrient supplies in eggs were like those of nutrient supplies in planktonic food, then maternal nutrition would affect larval form and developmental plasticity in the same way as larval nutrition. We used natural variation in maternal habitat to test this hypothesis, using laboratory growth experiments. In the sea urchin Strongylocentrotus droebachiensis, mothers from greater depth (100 m) had smaller ovaries and smaller eggs than mothers from shallower depth (<6 m), which indicated poorer maternal nutrition at depth. Effects of maternal habitat, gonad size, and egg size on larval growth rate were significant but small compared to the effect of abundance of larval food. The growth of larvae was little affected by differences in maternal habitat that had a large effect on fecundity and some effect on egg size. There were no effects on larval body or juvenile rudiment that resembled the developmental plasticity in response to larval food. Food -limited mothers did not produce larvae with larger larval feeding apparatus or retarded development of juvenile rudiments. Uncoupled morphogenetic effects of endogenous and exogenous nutrients should be advantageous where benthic and planktonic food supplies vary independently. Finely tuned responses to stimuli may restrict the evolutionary consequences of developmental plasticity. Because maternal nutrition did not affect form of the larvae, larval form can be used as an index of planktonic conditions affecting feeding larvae. DESCRIPTORS: maternal-effects; nutrition-; growth-; Invertebrate-larvae; Animal -nutrition; Food-availability; Developmental-stages; Larval-development; Strongylocentrotus-droebachiensis; Echinoidea- IDENTIFIERS: maternal-effects CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9808564 ACCESSION NUMBER: 4279458 UPDATE CODE: 9806 LIBRARY HOLDINGS MESSAGE: Connect to older issues of this title online; UW restricted http://www.jstor.org/journals/00129658.html See records of latest issues received http://catalog.lib.washington.edu/record=b2001548 Location: null -- Call number: 570.5 EC -- LIB HAS: v.1-7, 36-79 (1920 -1998) Location: Available Online Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=23845 -- LIB HAS: Aug.1991- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Bothell/CCC Periodicals -- Shelved by title: Ecology -- Call number: QH540 .E3 -- Latest three years only Location: Fish-Ocean Stacks -- Call number: 570.5 EC -- LIB HAS: v.81- (2000-) -- Latest 2 Years Only On Display Location: Forest Resources Stacks -- Call number: 570.5 EC -- LIB HAS: v.61- (1980-) -- LATEST ISSUES ON DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Ecology -- Call number: 570.5 EC -- LIB HAS: v.1- (1920-) -- Incomplete v.15-16, 18, 29 Location: NatSci Periodicals -- Call number: 570.5 EC -- LIB HAS: v.1- (1920-) -- LATEST ISSUES ON DISPLAY; LIBRARY USE ONLY Location: Tacoma Periodicals -- Call number: QH540 .E3 -- LIB HAS: v.30 no.3, v.32 no.2-3, v.34-37, v.49-51, v.53-59, v.60-74, v.78- (1949, 1951, 1953-1956, 1968-1970, 1972-1993, 1997-) -- Latest 6 issues on Tacoma Periodical Display Shelves; Earlier issues in Tacoma Periodical Stacks Record 41 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): The effect of carotenoids in feed and environment temperature on the gonad development and gonad colour of the green sea urchin (Strongylocentrotus droebachiensis Mueller 1776) AUTHOR(S): Havardsson,-B.-Imsland,-A.K.-Christiansen,-R.; Hagen,-N.T.; Stefansson,-S. CORPORATE AUTHOR(S): International Counc. for the Exploration of the Sea, Copenhagen (Denmark), Mariculture Comm. CONFERENCE INFORMATION: Counc. Meet. of the Int. Counc. for the Exploration of the Sea, Reykjavik (Iceland), 27 Sep-4 Oct 1996 SOURCE (BIBLIOGRAPHIC CITATION): Copenhagen-Denmark ICES 3 pp SERIES TITLE/INFORMATION: ICES-Council-Meeting-Papers. REPORT/PATENT NUMBERS: ICES-CM-1996/F:15 (ICESCM1996F15) LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: DBO. DESCRIPTORS: Carotenoids-; Feed-composition; Temperature-effects; Sexual-maturity; Strongylocentrotus-droebachiensis; ANE,-Norway CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: BF9800666 ACCESSION NUMBER: 4258160 UPDATE CODE: 9803 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 42 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Recurrent outbreaks of disease in sea urchins Strongylocentrotus droebachiensis in Nova Scotia: Evindence for a link with large-scale meteorologic and oceanographic events AUTHOR(S): Scheibling,-R.E.; Hennigar,-A.W. AUTHOR AFFILIATION: Department of Biology, Dalhousie University, Halifax, NS B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Ecol.-Prog.-Ser. 1997 vol. 152, no. 1-3, pp. 155-165 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Incl. bibliogr.: 53 refs. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Recurrent outbreaks of a disease (paramoebiasis, caused by a marine amoeba Paramoeba invadens) result in mass mortalities of sea urchins Strongylocentrotus droebachiensis in the rocky subtidal zone of the Atlantic coast of Nova Scotia (Canada). Recent epizootics in 1993 and 1995, like those which occurred in the early 1980s, were associated with unusually warm sea surface temperatures (SST) in late summer/fall of each year. Disease outbreaks were localized in 1993 and did not completely eliminate sea urchin populations, whereas a widespread epizootic caused near-complete mortality over similar to 130 km of coast (straight-line distance) in 1995. Interannual differences in the extent of mortality were related to differences in the temperature regime (peak temperatures prevailed longer in 1995), which is consistent with previously described patterns. The absence of mortality in 1994 is attributed to the inability of P. invadens to survive low (<0 degree C) winter temperatures, suggesting it is an exotic pathogen. Recent outbreaks of paramoebiasis were associated with increased proximity to the coast of warm water masses in the summer/fall, as indicated by satellite-derived and ground-truthed charts of SST. Intrusions of Gulf Stream water as warm-core rings, which entrain and mix with shelf water, may contribute to coastal warming, although the frequency of ring formation was fairly constant among years (from SST charts, 1991 to 1995). Disease outbreaks during the past 2 decades have also been associated with years of relatively high tropical storm and hurricane activity in the northwest Atlantic (from records of the National Hurricane Center USA, 1976 to 1995), which may influence advection and mixing off Nova Scotia. These observations suggest that large-scale oceanographic and meteorologic processes may play a role in triggering epizootics by transporting the infective agent (if P. invadens is an exotic species) and/or creating environmental conditions conductive to the propagation of the disease. Because of the stochastic nature of these external events, the dynamics of the rocky subtidal ecosystem appear to be highly unpredictable. Severe disease outbreaks which eliminate sea urchins cause major changes in community structure as barren grounds, previously dominated by sea urchins, are colonized by kelps and other macroalgae. This has important implications for coastal fisheries, particularly the rapidly expanding sea urchin fishery. DESCRIPTORS: Animal-diseases; Mortality-causes; Temperature-effects; Pathogens-; Monitoring-; Population-density; Storms-; Strongylocentrotus -droebachiensis; Paramoeba-invadens; ANW,-Canada,-Nova-Scotia IDENTIFIERS: seasonal-variations CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9800523 ACCESSION NUMBER: 4258017 UPDATE CODE: 9803 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 43 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effects of food ration and feeding regime on growth and reproduction of the sea urchin Strongylocentrotus droebachiensis AUTHOR(S): Minor,-M.A.; Scheibling,-R.E. AUTHOR AFFILIATION: Department of Biology, Dalhousie University, Halifax, NS B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Biol. 1997 vol. 129, no. 1, pp. 159-167 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: To determine the effects food ration and feeding regime on growth and reproduction of Strongylocentrotus droebachiensis, sea urchins in laboratory aquaria were fed kelp (Laminaria longicruris) supplied at either a high (H, ad libidum daily) or a low (L, ad libidum 1 d/wk) ration in two successive 12-wk intervals during the reproductive period. After 24 wk, urchins fed the high ration continuously (HH) or for the last 12 wk only (LH) had a significantly greater mean gonad index [(gonad weight/total body weight) x 100] and body weight than urchins fed the low ration continuously (LL) or for the last 12 wk only (HL). Urchins in the HL treatment had a significantly greater gonad index than those in the LL treatment; there was no significant difference in gonad index between the LH and HH treatments. Females had a greater gonad index than males in the low ration (LL and HL) treatments at the end of the experiment; there was no significant difference between sexes in the high ration (LH, HH) treatments. Gametogenesis proceeded to maturation in all treatments and some individuals spawned at the end of the experiment. Females in the high ration (HH and LH) treatments had a greater proportion of nutritive phagocytes in their ovaries than females in the low ration treatments, but there was no effect of feeding treatment on oocyte or ovum size. Feeding treatment had no effect on the relative abundance of nutritive phagocytes in the testes, although the proportion of spermatocytes was higher (and that of spermatozoa lower) in the high ration than in the low ration treatments. Urchins in the high ration treatments had a lower mean jaw height index [(jaw height/test diameter) x 100] and greater mean test diameter than those in the low ration treatments at the end of the experiment, although these differences were not statistically significant. Feeding rate on kelp at the end of the experiment was significantly greater for urchins in the low ration than in the high ration treatments. Our experimental results show that even relatively low rations of kelp support somatic and gonadal growth in S. droebachiensis. Increasing the supply of kelp, particularly during the period of active gametogenesis, results in maximal rates of growth and reproduction. These results suggest that populations of S. droebachiensis in barrens may derive a substantial proportion of their nutrition from drift kelp, which may contribute to their persistence in these habitats. They also explain the large body size, high reproductive effort and fecundity of urchins grazing on kelp beds. These findings have important implications for understanding the dynamics of natural populations of S. droebachiensis and for development of effective aquacultural practices. DESCRIPTORS: Feeding-experiments; Food-availability; Growth-; Recruitment-; Food -organisms; Variance-analysis; Food-consumption; Strongylocentrotus -droebachiensis; Laminaria-longicruris; ANW,-Canada,-Nova-Scotia IDENTIFIERS: controlled-conditions CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9800476 ACCESSION NUMBER: 4257970 UPDATE CODE: 9803 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 44 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Sustainable aquaculture of the green urchin CORPORATE AUTHOR(S): New Hampshire Univ., Durham (USA). Sea Grant Program SOURCE (BIBLIOGRAPHIC CITATION): 1997 22 pp PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: R (Report) ABSTRACT: Within the past decade, commercial harvesting of the green sea urchin, Strongylocentrotus droebachiensis, in Maine and New Hampshire expanded rapidly and became the second largest fishery in the state of Maine, behind lobsters (Harris et al., 1996). Since then the fishery has been declining due to overfishing. This has led to a great interest in developing a plan for a more sustainable fishery and, thus, a growing interest in the aquaculture of sea urchins. This experiment was designed to investigate ways of planning a system for the culturing of urchins from larvae through the metamorphosis stage to produce seed stock for outplanting. Three species of algae were cultured to be used as the variable treatments. Urchin larvae were fed four different algal diets: Nanochloropsis, Isochrysis galbana, a mixture of Nanochlorpsis and Isochrysis, and Dunaliella, and a mixture of Nanochlorpsis, Isochrysis, and Dunaliella. Measurements of the arm spicules in the three different treatments were made weekly and no significant differences were found between treatments. Results indicate that Nanochloropsis may be the most suitable algae for urchin aquaculture. Such a diet led to a greater amount of settlement than that of an Isochrysis diet. However, the test sizes of urchins fed Nanochloropsis were found to be significantly smaller than those of urchins fed an Isochrysis diet. It may then be suggested that a larger ration of Nanochloropsis would be the most sustainable diet. DESCRIPTORS: Diets-; Marine-aquaculture; Aquaculture-techniques; Food-organisms; Strongylocentrotus-droebachiensis; Algae- CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9804975 ACCESSION NUMBER: 4256306 UPDATE CODE: 9803 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 45 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Relation of food preference to fitness for the green sea urchin, Strongylocentrotus droebachiensishic chromosome sex mechanism AUTHOR(S): Lemire,-M.; Himmelman,-J.H. AUTHOR AFFILIATION: Departement de Biologie et GIROQ, Universite Laval, PQ G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Biol. 1996 vol. 127, no. 1, pp. 73-78 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: We maintained 30 to 35 mm sea urchins (Strongylocentrotus droebachiensis)on 17 different macroalgal diets in the field over a 130-d period and correlated the resulting changes in somatic and gonadal tissues with measures of food preferences. The various algae fell into three distinct categories according to their ability to support growth. The most striking effect of diet was on gonadal mass, there being a 14-fold increase for the best algal diet, compared to initial gonadal mass, and nearly a threefold decrease for the worst diet. The relation of food preference to somatic growth was nonlinear. A sharp increase in the growth of test diameter, total mass and test mass occurred between the nonpreferred and intermediately preferred algae, but growth rates were similar for intermediate and preferred algae. Gonadal growth tended to increase exponentially with an important measure of food preference, feeding rate (g ingested/d). These observations suggested that urchins only channel food resources into somatic growth up to a given point, additional reserves being used for producing gametes. The positive relationship of food preference to growth, and especially the strong correlation with gonadal production, indicates that the highly selective feeding of the urchin contributes to its fitness. DESCRIPTORS: animal-reproductive-organs CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: BF9701601 ACCESSION NUMBER: 4213683 UPDATE CODE: 9712 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 46 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Temperature adaptations of embryos from intertidal and subtidal sand dollars (Dendraster excentricus, Eschscholtz) AUTHOR(S): Bingham,-B.L.; Bacigalupi,-M.; Johnson,-L.G. AUTHOR AFFILIATION: Huxley Coll. Environ. Stud., Western Washington Univ., Bellingham, WA 98225, USA SOURCE (BIBLIOGRAPHIC CITATION): NORTHWEST-SCI. 1997 vol. 71, no. 2, pp. 108-114 INTERNATIONAL STANDARD NUMBERS: ISSN 0029-344X PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Animals living in the marine intertidal zone have a suite of adaptations that allow them to survive thermal stresses associated with low tides. We hypothesized that adjustments of adult organisms to their thermal environment might be reflected in the thermal tolerances of their developing offspring (i.e., adults that survive large temperature fluctuations might produce embryos that have similarly large tolerances). Comparison of the thermal biology of developing sand dollar embryos (Dendraster excentricus) which were offspring of adults living in intertidal or subtidal habitats revealed subtle differences in effects of temperature on survival and developmental rates. Intertidal and subtidal D. excentricus showed similar fertilization success at temperatures from 7 degree to 19 degree C and could develop from fertilized egg to pluteus larva at temperatures from 7 degree to 26 degree C. Within this common tolerance range, however, subtidal animals' offspring were more likely to develop normally at lower temperatures (8 degree -16 degree C), while the intertidal animals' offspring were more likely to develop normally at higher temperatures (22 degree -26 degree C). There were also significant differences between subtidal and intertidal Dendraster groups in the effects of temperature on developmental rates. In particular, cleavage rates of embryos from intertidal adults remained constant or increased as temperature was raised from 7 to 15 degree C. In contrast, cleavage rates of embryos from subtidal adults decreased with increasing temperature. Ecological observations suggest that these differences are due to physiological acclimatization effects rather than genetic differentiation of the groups. To contrast D. excentricus with a different species that is largely confined to subtidal depths, we also examined temperature tolerances of developing sea urchin embryos (Strongylocentrotus droebachiensis). We found that its temperature tolerance during early development was slightly narrower and shifted to lower temperatures than that of D. excentricus. This correlates well with differences in habitat and reproductive season of these species and may help explain their distributions and abundances. DESCRIPTORS: temperature-effects; temperature-tolerance; survival-; genetics-; life -history; habitat-selection; Dendraster-excentricus IDENTIFIERS: embryonic-development; acclimatization- CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9722492 ACCESSION NUMBER: 4206846 UPDATE CODE: 9712 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b1992277 Location: Bothell/CCC Microforms -- Call number: Microfilm BOT-474 -- LIB HAS: v.72- (1998 -) Location: Bothell/CCC Periodicals -- Shelved by title: Northwest science -- Call number: Q1 .N6 -- Current issues only; Held until microfilm received Location: Forest Resources Stacks -- Call number: 505 NO -- LIB HAS: v.21- (1947-) -- LATEST ISSUES ON DISPLAY Location: FriHarbor Periodicals -- Call number: Q1 .N6 -- LIB HAS: v.25-55 (1951 -1981) Location: NatSci Periodicals -- Call number: 505 NO -- LIB HAS: v.1- (1927-) -- LATEST ISSUES ON DISPLAY Location: Tacoma Periodicals -- Call number: Q1 .N6 -- LIB HAS: v.67 no.1-3, v.68- (1993-) -- Latest issues shelved on Tacoma Periodical Display Shelves; Earlier issues shelved in Tacoma Periodical Stacks Record 47 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Observations on factors that influence marine ecosystems AUTHOR(S): Doughty,-W. AUTHOR AFFILIATION: PO Box 121, Oraso Island, ME 04066, USA CONFERENCE INFORMATION: Conf. on the Effects of Fishing Gear on the Sea Floor of New England, Ashland, MA (USA), 30 May 1997 SOURCE (BIBLIOGRAPHIC CITATION): EFFECTS-OF-FISHING-GEAR-ON-THE-SEA-FLOOR-OF-NEW-ENGLAND. 1997 p. 26 REPORT/PATENT NUMBERS: MITSG-97-15 (MITSG9715) PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ABSTRACT: As a fisherman and fish spotter, I have spent the last 43 years on the sea. The one constant over that time is that the ocean is constantly changing and it is my observation that man is a small influence on ecosystems. I would like to share a few observations with you. One species which has considerable influence on nearshore environments is the cormorant. As a protected species, cormorant populations have increased and intensively prey upon cunner, Tautogolabrum adspersus, in ledges, nearshore areas where subtidal algal populations are abundant. Removing the cunner from ledges results in decreased predation on one of their prey items, sea urchins, Strongylocentrotus droebachiensis, that, in turn, have increased in numbers and decimated these areas. The ledges are good fish habitat, and removal of the algae by urchins creates barren areas that are not protective fish habitat. The lack of algae also contributes to low dissolved oxygen. Water clarity has also changed during this time. Areas where water clarity was to depths of 20 fathoms are now cloudy, in part, due to white river rafting which continually stirs up sediments that are carried to the sea. Formerly, spring rains carried a heavy load, but this was of short duration compared to the longer periods associated with white river rafting. Similarly, during this period the eider duck has also increased and expanded its range from marine environments to fresh water lakes and ponds. Eider ducks feed on bivalves that, in turn, filter particulates from the water and are responsible for water clarity. Eiders have been observed to feed in intertidal areas that were reseeded with bivalves. (DBO) DESCRIPTORS: environmental-effects; trawling-; fishing-gear; marine-environment; marine -fisheries; Tautogolabrum-adspersus CLASSIFICATIONS: Autecology:-Environmental-effects-1422 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: NO9702022 ACCESSION NUMBER: 4205445 UPDATE CODE: 9712 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 48 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Research directions and management options for sea urchin culture in Nova Scotia AUTHOR(S): Hatcher,-B.G.; Hatcher,-A.I. AUTHOR AFFILIATION: Caricom Fisheries & Resources Assessment Unit, Tyrell St., Kingstown, St. Vincent & the Grenadines, West Indies CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 62-65 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: This paper summarizes the biological, ecological and cultural characteristics that are critical to the formation of a policy leading to sustainable exploitation and aquaculture of green sea urchins, Strongylocentrotus droebachiensis, in Nova Scotia, Canada, and to identify areas where strategic and applied research would be beneficial. DESCRIPTORS: aquaculture-development; exploitation-; natural-populations; resource -management; fishery-biology; ecology-; Echinodermata-; Strongylocentrotus -droebachiensis; Canada,-Nova-Scotia; marine-invertebrates CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700806 ACCESSION NUMBER: 4087153 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 49 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Out of season maturation of echinoid broodstock in fixed light regimes AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Department Fisheries Natural Science, Bodoe College, N-8002 Bodoe, Norway CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 p 61 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. NOTES: Summ. only. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Green sea urchin, Strongylocentrotus droebachiensis, broodstock was exposed to treatments of either continuous light or continuous darkness. The experimental animals were individually marked with tags and maintained(mean residence time about 8 months) in laboratory tanks supplied with fresh kelp, Laminaria hyperborea and L. digitata. The experiment was terminated in August, at the antipodal point of the climax of the natural annual maturation cycle of the species. Histological examination of the gonads demonstrated that the proportion of mature individuals was significantly higher in the dark treatment than in a natural control population that was sampled at the same time.The proportion of mature males was 60% in darkness, 22% in continuous light, and 25% in the control population; whereas the proportion of mature females was 15% in darkness, 15% in continuous light, and 0% in the control population. Results suggest that darkness stimulates out-of-season production of mature males, but has no detectable effect on females. The practical implications for future echinoculture operations is that continuous light may ensure optimal quality by impeding unwanted maturation of males. DESCRIPTORS: light-effects; sexual-maturity; marking-; brood-stocks; females-; males-; Echinodermata-; Strongylocentrotus-droebachiensis; marine-invertebrates CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700805 ACCESSION NUMBER: 4087152 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 50 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Aging and growth of the green sea urchin AUTHOR(S): Robinson,-S.M.C.; Macintyre,-A.D. AUTHOR AFFILIATION: Applied Aquaculture Section, Department Fisheries Oceans, St. Andrews, NB E0G 2X0, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 56-60 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: If an industry based on enhancement of the gonad(`roe') is to develop on wild-harvested green sea urchins,Strongylocentrotus droebachiensis, it will be important to understand the age structure and growth profiles of the targeted animals. It is possible that older animals do not grow as quickly as younger ones of the same size. Populations of sea urchins in the southwestern New Brunswick portion of the Bay of Fundy have been sampled since 1994 and results of aging work, based on the number of rings found in the coronal test plates and the rotules (components of Aristotle's lantern),indicate the animals are older than previously thought. Ages have been validated using a tetracycline marking technique and an elemental ratio technique using a microprobe. DESCRIPTORS: natural-populations; age-determination; methodology-; shells-; growth-; marking-; Echinodermata-; Strongylocentrotus-droebachiensis; ANW,-Canada, -New-Brunswick; ANW,-Canada,-Fundy-Bay; marine-invertebrates CLASSIFICATIONS: Autecology:-Age-and-growth-1424 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA9700804 ACCESSION NUMBER: 4087151 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 51 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Sustainable development of the green sea urchin AUTHOR(S): Bonardelli,-J.C. AUTHOR AFFILIATION: MAPAQ, Direction de l'Innovation et des Technologies, 96 Montee Sandy Beach, CP 1070, Gaspe, QC G0C 1R0, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 51-55 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The green sea urchin, Strongylocentrotus droebachiensis is a highly prized species on Asian markets and could represent a source of supplementary income for Quebec fishermen and processors. Preparing sea urchins for market through storage in land-based tanks, by conditioning with natural or artificial algal diets, or by culturing and re-seeding, are alternatives that should be carefully considered for their potential impact on the sustainable development of the industry. A total of 62 exploratory sea urchin harvesting permits were allocated in 1995 to lobster fishermen around the Gaspe Peninsula, despite the fact that the only allowable harvesting method is by scuba diving, Because fishermen do not generally have the required practical and safety training, the financial resources to initiate this fishery, or the training to harvest safely by scuba under drift-ice conditions, it is difficult to grasp how the development of this new sector will be undertaken in a co-ordinated manner. Effort should be made to understand the population structure of the sea urchins and to quantify the resource in different localities before large-scale exploitation occurs. DESCRIPTORS: echinoderm-fisheries; aquaculture-development; aquaculture-economics; risks -; scuba-diving; resource-management; resource-conservation; Echinodermata -; Strongylocentrotus-droebachiensis; Canada,-Quebec,-Gaspe-Peninsula; marine-invertebrates CLASSIFICATIONS: Aquaculture:-General-1581; Environmental-quality:-Conservation,-wildlife -management-and-recreation--1523; Aquaculture:-General-1581 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-3:-Aquatic -Pollution-and-Environmental-Quality (Q5); ASFA-Aquaculture-Abstracts (Q3) INPUT CENTER NUMBER: CA9700803 ACCESSION NUMBER: 4087150 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 52 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Sea urchin gonad enhancement: Preliminary economic feasibility analysis AUTHOR(S): Burke,-B. AUTHOR AFFILIATION: Canadian Centre Fisheries Innovation, P.O. Box 4920, St. John's, NF A1C 5R3, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 45-50 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The Canadian Centre for Fisheries Innovation, in cooperation with the Newfoundland Department of Fisheries and Aquaculture, has sponsored two years of research on green sea urchin, Strongylocentrotus droebachiensis, gonad enhancement at Memorial University of Newfoundland. This paper addresses the potential economic viability of sea urchin farming, based on information obtained from these two years of study and costing and market information from the existing industry. An economic model was prepared to evaluate both on-land tank farming and bottom culture. Results from this preliminary analysis demonstrate the impact of sales price, roe yield, growth rates, raw material costs, processing costs, and other factors on potential economic viability. Sea urchin gonad enhancement has the potential to be economically viable, especially if premium prices can be obtained for the consistent, high quality product available through controlled farming. DESCRIPTORS: aquaculture-; aquaculture-economics; quality-assurance; fishery-economics; mathematical-models; animal-reproductive-organs; growth-; feeding -experiments; Echinodermata-; Strongylocentrotus-droebachiensis; Canada, -Newfoundland; marine-invertebrates CLASSIFICATIONS: Marketing-and-economics-of-aquatic-products:-Economics-1644; Aquaculture: -Fish-culture-1582 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9799803 ACCESSION NUMBER: 4087149 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 53 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Developing markets for feed lot sea urchins AUTHOR(S): Whitaker,R.; Quinlan,-W.; Daley,-C.; Parsons,-J. AUTHOR AFFILIATION: Box 67, Site C, Portugal Cove, NF A0A 3K0, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 42-44 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Defining the requirements of the Japanese market for green sea urchins, Strongylocentrotus droebachiensis is difficult as there is considerable variation among areas and companies. This presents the sea urchin producer with a conundrum that is not easily solved. This paper addresses the factors that contribute to the variability in market requirements, the issues affecting economic viability, and the application of developing technology, including the use of aquaculture feed lots, to resolve the critical issues. DESCRIPTORS: cultured-organisms; marketing-; quality-assurance; costs-; trade-; Echinodermata-; Strongylocentrotus-droebachiensis; Canada,-Newfoundland; Japan-; aquaculture-products; marine-invertebrates CLASSIFICATIONS: Marketing-and-economics-of-aquatic-products:-Marketing-1643; Aquaculture: -General-1581 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700802 ACCESSION NUMBER: 4087148 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 54 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Gonad and somatic production of Strongylocentrotus droebachiensis fed manufactured feeds AUTHOR(S): Klinger,-T.S.; Lawrence,-J.M.; Lawrence,-A.L. AUTHOR AFFILIATION: Department Biological & Allied Health Sciences, Bloomsburg University, Bloomsburg, PA 17815-1301, USA CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 35-37 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Green sea urchin, Strongylocentrotus droebachiensis were maintained from January to March, the period prior to the major annual spawn, and from June to September, after the major spawn, and fed ad libitum on two feeds manufactured from grains, soy, and fish meal. One feed contained kelp meal. Individuals consumed significantly more feed and had significantly greater rates of increase in mass in the post-spawning period than during the pre-spawning period. Significantly less feed with kelp than feed with no kelp was consumed. Feed with kelp supported significantly greater rates of increase in mass than feed with no kelp. With feeding during the post -spawning period, gonad indices increased to levels comparable to those of pre-spawning individuals, but did not differ with feed type. Gonad indices were high for individuals collected in January and did not increase significantly with feeding. Gut indices increased markedly with feeding, but did not differ with feed type or season. Either feed was suitable for maintaining sea urchins in mariculture and promoting gonad production. Neither feed promotes significant whole-animal growth. DESCRIPTORS: aquaculture-; feeding-experiments; diets-; animal-reproductive-organs; growth-; evaluation-; Echinodermata-; Strongylocentrotus-droebachiensis; USA,-Maine; marine-invertebrates CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700800 ACCESSION NUMBER: 4087146 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 55 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Prepared food coupled with manipulation of photoperiod yield an out-of -season crop for the green sea urchin AUTHOR(S): Walker,-C.W.; Lesser,-M.P. AUTHOR AFFILIATION: Department Zoology, University New Hampshire, Durham, NH 03824, USA CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 31-34 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Two problems facing the green sea urchin,(Strongylocentrotus droebachiensis) fishing industry are poor roe quality and short fishing season. The authors coupled enhancement of gonadal growth of poorly fed sea urchins utilizing prepared food with photoperiodic manipulation of the gametogenic cycle to produce an out-of-season crop which could be used to exploit a lucrative end of summer market now supplied by Chile. DESCRIPTORS: aquaculture-; feeding-experiments; light-effects; roes-; quality-assurance; animal-reproductive-organs; growth-; Echinodermata-; Strongylocentrotus -droebachiensis; USA,-New-Hampshire; marine-invertebrates CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700799 ACCESSION NUMBER: 4087145 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 56 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Conditioning green sea urchins in tanks: The effect of semi-moist diets on gonad quality AUTHOR(S): Motnikar,-S.; Bryl,-P.; Boyer,-J. AUTHOR AFFILIATION: Centre Aquacole Marin Grand-Riviere, Ministere l'Agriculture, Pecheries et l'Alimentation, C.P. 340 Grand-Riviere, QC G0C 1V0, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 21-25 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Several studies were conducted between 1991 and 1994 on green sea urchin(Strongylocentrotus droebachiensis) fed with semi-moist diets and dried algae(Laminaria longicrurus). Four-to-five week conditioning studies tested various diets for their ability to increase the gonadosomatic index(GI) to 10% or more, the minimum acceptable to the market. Diets composed of algae, wheat gluten, and starch, and enriched with minerals, were formulated in the form of semimoist, rubbery, sinking granules that were water resistant for up to 48 hours. The diets were well accepted by the urchins. Trials were carried out in a flow-through system using local seasonal water temperature and photoperiod. Gonads were evaluated and compared to commercial specifications in terms of the GI, appearance, color and taste. The diets and gonads were analysed for their chemical, amino acid and carotenoid composition at the beginning and at the end of the studies. Diets containing calcium, magnesium and vitamin C produced a positive effect, while the addition of fish oil did not improve gonad development. A preliminary study with a diet containing carotenoids did not result in an increase in gonad carotenoid content. Conditioning during the months of July to October produced the best results, suggesting that sea urchins need a period of recuperation following spawning. The best diets resulted in 100% of sea urchins with a GI greater than 10-12%. No gonads were obtained with acceptable color(bright yellow to orange). Gonads of urchins that had adequate color, were fed the best semi-moist diets, presented sensory attributes,including taste, greatly appreciated by Japanese experts. DESCRIPTORS: aquaculture-; feeding-experiments; animal-reproductive-organs; growth-; quality-assurance; Echinodermata-; Strongylocentrotus-droebachiensis; Laminaria-longicrurus; Canada,-Quebec,-Gaspe-Peninsula,-St.-Jean-R.; marine-invertebrates CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700797 ACCESSION NUMBER: 4087143 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 57 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Enhancing roe of the green sea urchin using an artificial food source AUTHOR(S): Robinson,-S.M.C.; Colborne,-L. AUTHOR AFFILIATION: Applied Aquaculture Section, Department Fisheries Oceans, St. Andrews, NB E0G 2X0, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. 1997 pp. 14-20 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: As the industry on the green sea urchin, Strongylocentrotus droebachiensis, continues to expand, there is growing interest in increasing the value of the harvested animals. A project was initiated to investigate the feasibility of enhancing the roe in sea urchins using artificial food and hanging-culture methods. Sea urchins were exposed to one of five dietary treatments: 3 artificial diets based on terrestrial food sources, an algal diet of Laminaria longicrurus, and a starvation control. The roe content, survival and other characteristics of the sea urchins were measured at 4 -wk intervals from December 1995 to February 1996. The artificial diet based on carrots and cabbage gave the best gonad growth(roe content increased from a mean of 4.3% whole body weight to 7.9%) over the 12-wk period. L. longicrurus produced an intermediate response(roe content increased from a mean of 4.3% whole body weight to 7.9%), while the roe content of starved animals remained unchanged. Color, taste and texture of the gonads were all reported as `good' by an experienced local processor. Mortality in the cages was low. DESCRIPTORS: aquaculture-; feeding-experiments; diets-; roes-; weight-; performance -assessment; Echinodermata-; Strongylocentrotus-droebachiensis; Laminaria -longicrurus; Canada,-New-Brunswick,-St.-Andrews; marine-invertebrates CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700796 ACCESSION NUMBER: 4087142 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 58 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Feasibility trials for sea urchin aquaculture using natural feeds AUTHOR(S): Hooper,-R.G.; Cuthbert,-F.M.; Mckeever,-T. AUTHOR AFFILIATION: Bonne Bay Biology Station, Memorial University, St. John's, NF A1B 3X9, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] CONFERENCE INFORMATION: Sea Urchin Culture Workshop, Ottawa, ON (Canada), 4 Jun 1996 SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-SEA-URCHIN-CULTURE-WORKSHOP. Parsons,-G.J.-eds. SACKVILLE,-NB -CANADA TRIBUNE-PRINTING 1997 pp. 5-7 pp INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Various experimental diets were fed to green sea urchins(Strongylocentrotus droebachiensis) between the spring of 1994 and the winter of 1996 at the Bonne Bay Biology Station. Experimental trials assessed the merits of common wild seaweed species. Laminaria digitata was shown to be the most effective at increasing gonad yield and improving quality. L. longicrurus was less effective, but still useful. Experiments on ration size have shown that diets provided at considerably below satiation rates produce satisfactory results, with rations as low as 1.5% of the body weight per day giving good results. A mixed diet of L. digitata and L. longicrurus gave as good results as L. digitata. Trials comparing growth rates during different seasons were initiated in June 1996 and are continuing through the winter. Growth rates during trials starting from June to September were uniformly good, while growth and feeding rates in the winter were significantly reduced. Diets containing fresh fish were investigated and found to produce poor-quality gonads. Large, low-quality sea urchins were shown to respond to feeding in the same manner as smaller, younger sea urchins, but response was slower. No evidence of senescence was found. DESCRIPTORS: aquaculture-; feeding-experiments; diets-; seaweeds-; Echinodermata-; Strongylocentrotus-droebachiensis; Laminaria-digitata; Laminaria -longicrurus; Canada,-Newfoundland; marine-invertebrates CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9799795 ACCESSION NUMBER: 4087140 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 59 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Sea urchin population survey of Campobello Island, Deer Island, and Grand Manan AUTHOR(S): Robinson,-S.; Macintyre,-A. SOURCE (BIBLIOGRAPHIC CITATION): 20 pp, NOTES: Incl. 25 fig. Publ. 199305Final Rep. for the Canada-New Brunswick Coop.Agreement with the Campobello Fishermen's Association LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A stock survey for the green sea urchin, Strongylocentrotus droebachiensis, was done in the summer and fall of 1992 around Deer Island and the archipelagoes, Campobello Island, and Grand Manan. These are the major fishing locations of the present sea urchin fishing industry. The survey was conducted with divers from boats chartered from members of the local fishing industry under the direction of the scientific staff at the Biological Station in St. Andrews, N.B. The main objectives of the study were to 1) describe the size structure of the populations in the different areas of the Quoddy region, 2) estimate the densities of sea urchins in each area, 3) derive biomass estimates for the region. Results indicated that Deer Island and the archipeligoes had the most sea urchins(approximately 1.4 billion) but the majority were very small and below fishable size of 50 mm. There were approximately 170.5 million sea urchins around Campobello Island, slightly larger than those of Deer Island. Grand Manan supported approximately 763.5 million sea urchins but these were much larger than those found on either Deer Island or Campobello Island.The densities of sea urchins found in this survey were intermediate compared to other studies done in Nova Scotia, Newfoundland and the Gulf of St. Lawrence. DESCRIPTORS: echinoderm-fisheries; stock-assessment; fishery-management; fishery -development; potential-yield; fishery-biology; population-structure; population-dynamics; Strongylocentrotus-droebachiensis; ANW,-Canada,-Fundy -Bay; ANW,-Canada,-New-Brunswick; Canada,-New-Brunswick CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA9700696 ACCESSION NUMBER: 4078072 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 60 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Biological fishery information for the rational development of the green sea urchin industry AUTHOR(S): Robinson,-S.; Macintyre,-A. SOURCE (BIBLIOGRAPHIC CITATION): 18 pp, NOTES: Incl. 70 fig.Final rep. for: New Brunswick Dep. Fish. & Aquacult.; the Cooperation Agree. Econ. Diversification. LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Research on the green sea urchin (Strongylocentrotus droebachiensis) in the southwestern New Brunswick area of the Bay of Fundy was re-initiated n 1991, after a hiatus of almost 20 years. Since 1991, the St. Andrews Biological Station in collaboration with the Campobello Fishermen's Association, the Grand Manan Fishermen's Association and the Province of New Brunswick have teamed up to study the population dynamics of the green sea urchin and how the fishery impacts on those populations. The resarch program for the 1994-95 field season on the green sea urchin fishery in southwestern New Brunswick began to focus more on some of the biological issues pertaining to the industry. The results from this research indicated that recruitment for 1994 from all seven sites examined occurred in mid-July was approximately 20 juveniles/m super(2). These values for recruitment were much less than those found in southern Maine and New Hampshire where values approaching 60 000 juveniles/m super(2) can be found. DESCRIPTORS: echinoderm-fisheries; stock-assessment; fishery-surveys; fishery-biology; recruitment-; fishery-development; fishery-management; Strongylocentrotus -droebachiensis; ANW,-Canada,-Fundy-Bay; ANW,-Canada,-New-Brunswick; Canada,-New-Brunswick CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA9700695 ACCESSION NUMBER: 4078071 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 61 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Surveys on green sea urchin (Strongylocentrotus droebachiensis) populations in Queen Charlotte Strait, British Columbia, October 1995 and March 1996 AUTHOR(S): Waddell,-B.J.; Perry,-R.I.; Scharf,-G.; Ross,-G. CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Nanaimo, BC [Canada], Sci. Branch SOURCE (BIBLIOGRAPHIC CITATION): CAN.-TECH.-REP.-FISH.-AQUAT.-SCI.-RAPP.-TECH.-CAN.-SCI.-HALIEUT.-AQUAT. 1997 43 pp INTERNATIONAL STANDARD NUMBERS: ISSN 0706-6457 NOTES: NTIS-Accession Number: MIC-97-05241. PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Three surveys for green urchins (Strongylocentrotus droebachiensis), two in October 1995, and one in March 1996 were undertaken using SCUBA divers and the transect-quadrat method. Data were collected on size and abundance of green sea urchins, and on the depth, substrate and vegetation of each quadrat of the survey. The total biomass of legal-sized urchin in the target survey location was 48,449 kg in October 1995 and 36,395 kg in March 1996. Green sea urchin removals between November 1995 and February 1996 from this location by the commercial fishery were estimated at 6,209 kg. The instantaneous total and fishing mortality rates for this time period and location were calculated at 0.68 and 0.35, respectively. The exploitation rate was calculated at 51%(assuming a closed population). Despite the change in overall biomass from October to March, the locations of high densities of green urchins remained relatively the same over the time period. Test diameter size mode analysis indicated that there were two dominant modes in October at approximately 29-34 mm and at 58-60 mm, with an increase in the smaller mode to 39 mm in March, consistent with seasonal growth. There were no significant relationships between green sea urchin densities and depth, substrate, or vegetation within the depth range surveyed. DESCRIPTORS: echinoderm-fisheries; fishery-management; fishery-surveys; fishery-biology; biomass-; population-density; harvesting-; commercial-fishing; Strongylocentrotus-droebachiensis; INE,-Canada,-British-Columbia,-Queen -Charlotte-Strait CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CA9700632 ACCESSION NUMBER: 4078008 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2052716 Location: Fish-Ocean Microforms -- Call number: Microfiche MB-303 -- LIB HAS: no.927- (1980 -) -- Incomplete; Some only available in print format Location: Fish -Ocean Stacks -- Call number: SH1 .C352 -- LIB HAS: no.925- (1980-) -- Incomplete; Some volumes listed separately; Some only in microfiche Record 62 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Developing and evaluating seaweed diets to enhance the commercial gonad value of the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): Mckeever,-T. AUTHOR AFFILIATION: Aquaculture Unit, Marine Institute of Memorial University, Box 4920, St. John's, NF A1C 5R3, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] SOURCE (BIBLIOGRAPHIC CITATION): AQUATECH-'-96. Parsons,-G.J.;Forgeron,-S.-eds. SACKVILLE,-NB-CANADA TRIBUNE -PRINTING 1996 no. 96-4 p 15 INTERNATIONAL STANDARD NUMBERS: ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. no. 96-4 NOTES: Summ. only. PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The green sea urchin, Strongylocentrotus droebachiensis supports a wild fishery in Newfoundland but the value of this fishery is limited by disappointing roe yield and quality, and a short harvesting season. The feasibility of feeding abundant seaweed species to sea urchins, to enhance yield and value, was investigated, in both aquarium culture and seabed cages. The kelp, Laminaria digitata, was found to be the most effective feed, while L. longicruris gave lower, but still good results. Ration size trials showed that feeding rates of 0.2% gave optimum results with no better growth at higher ration rates. Spawning, which terminates the wild fishing season, was suppressed in cold water aquaria, thus extending the harvestable season to any time of the year. Seabed trials gave less consistent results than tank culture. DESCRIPTORS: echinoderm-fisheries; potential-yield; seed-aquaculture; animal -reproductive-organs; marine-aquaculture; shellfish-culture; cage-culture; culture-tanks; diets-; nutritive-value; food-organisms; seaweeds-; kelps-; botanical-resources; Strongylocentrotus-droebachiensis; Laminaria -digitata; Laminaria-longicruris; Canada,-Newfoundland CLASSIFICATIONS: Aquaculture:-Shellfish-culture-1583; Aquaculture:-Culture-of-other-aquatic -animals-1584; Aquaculture:-Shellfish-culture-1583 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CA9700436 ACCESSION NUMBER: 4077954 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 63 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): The coastal edge of the Northeast Water Polynya in spring 1993 AUTHOR(S): Weslawski,-J.M.; Wiktor,-J.; Koszteyn,-J.; Zajaczkowski,-M.; Wieczorek,-P.; Kotwicki,-L. AUTHOR AFFILIATION: Arctic Ecol. Group, Inst. Oceanology, Polish Acad. Sci., Powstancow Warszawy St. 55, Sopot 81-712, Poland CONFERENCE INFORMATION: Northeast Water Polynya Symp., Helsingor (Denmark), 1-5 May 1995 SOURCE (BIBLIOGRAPHIC CITATION): J.-MAR.-SYST. 1997 vol. 10, no. 1-4, pp. 429-444 INTERNATIONAL STANDARD NUMBERS: ISSN 0924-7963 PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Multidisciplinary, marine ecological observations were conducted at the shallow water edge of the Northeast Water in June, 1993. Although variable in size and shape, a small polynya was constantly present at Eskimonaes, at the fast-ice edge of Ingolfsfjord. A shallow stratified layer developed at the water surface at negative water and air temperatures-an effect of sea ice melting in cold water early in the season. Nutrients were recorded in considerable quantities, although by mid July NO sub(3) had become depleted. The chlorophyll and phytoplankton maxima at 8-12 m depth had peak values of 2 mg chl a m super(3), typical for Arctic algal blooms. The phytoplankton included over 90 species and was dominated by the Fragillariopsis group. Zooplankton was poor in biomass and density, but over 23 taxa were found, with the copepods Oithona similis and Pseudocalanus acuspes being numerically dominant. Sedimentation was approximately 0.2 g dry weight/m super(2)/d and suspended matter concentrations ranged from 4 to 19 m/l. The benthos was represented by hard bottom forms only, with a surprisingly dense cover of macrophytes. Juvenile sea urchins (Strongylocentrotus droebachiensis), brittle stars (Ophiocten sericeum) and amphipods were dominant. Higher trophic levels were represented by benthic feeders, such as eiders and walruses. The area observed was more similar to High Arctic fjord ecosystems than to the offshore central Northeast Water Polynya. DESCRIPTORS: polynyas-; sea-ice; fast-ice; ice-cover; ice-edge; ice-melting; thermal -stratification; phytoplankton-; benthos-; sedimentation-; PNE,-Greenland -Sea,-Northeast-Water-Polynya; Greenland- CLASSIFICATIONS: Descriptive-oceanography-and-limnology:-Ice-2150; Aquatic-communities: -Habitat-community-studies-1463 JOURNAL ANNOUNCEMENT: ASFA-2:-Ocean-Technology-Policy-and-Non-Living-Resources (Q2); ASFA-1: -Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Polar-Arctic-Eastward (PNE) INPUT CENTER NUMBER: CS9713221 ACCESSION NUMBER: 4066112 UPDATE CODE: 9709 LIBRARY HOLDINGS MESSAGE: Connect to the latest 9 months of this title online; UW restricted; http://www.sciencedirect.com/web -editions?_ob=JournalURL&_cdi=6001&_auth=y&_acct=C000021514&_version=1&_urlVersion=0&_userid=450576&md5=18fffda2815f3a8f98e3698c116d42c6&sb=y See records of latest issues received http://catalog.lib.washington.edu/record=b2762976 Location: Available Online Location: Fish-Ocean Stacks -- Call number: GC1 .J625 -- LIB HAS: v.1- (1990-) -- LATEST ISSUES ON DISPLAY; Some vols listed separately Record 64 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Shellfish culture in the Bay of Fundy AUTHOR(S): Robinson,-S.M.C. AUTHOR AFFILIATION: Applied Aquaculture Section, Fisheries and Oceans Canada, St. Andrews, NB E0G 2X0, Canada CORPORATE AUTHOR(S): Aquaculture Assoc. of Canada, St. Andrews, NB [Canada] CONFERENCE INFORMATION: Coldwater Aquaculture to the Year 2000, St. Andrews, NB [Canada], 6-8 Sep 1995 SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-OF-THE-HUNTSMAN-MARINE-SCIENCE-CENTRE-SYMPOSIUM-COLDWATER -AQUACULTURE-TO-THE-YEAR-2000. Burt,-M.D.B.;Waddy,-S.L.-eds. 1997 no. Spec. Pub1. 2 pp. 85-93 INTERNATIONAL STANDARD NUMBERS: ISBN 0-9694597-1-8 ISSN 0804-5417 SERIES TITLE/INFORMATION: BULL.-AQUACULT.-ASSOC.-CAN. no. Spec. Pub1. 2 PUBLICATION YEAR: 1997 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Interest in shellfish culture by private industry in the Canadian Maritimes continues to increase. Three species. soft-shell clams (Mya arenaria), the sea scallop (Placopecten magellanicus) and the green sea urchin (Strongylocentrotus droebachiensis) are currently under investigation as potential candidates for aquaculture in the Bay of Fundy. Clams are being evaluated using extensive culture techniques aimed at boosting the productivity of local clam beaches. Some success has been achieved to date, but techniques that work in one location do not necessarily work in all locations. The sea scallop is a valuable species and lucrative culture industries on similar species exist in other parts of the world. Research on the sea scallop indicates that distribution of wild spat in certain areas are prodictable from year to year and that a relatively constant supply of seed should be available to the fledgling industry. Sea urchins are probably the newest species being considered. At present the concept is to enhance the roe quality of wild harvested sea urchins before selling them. In some countries hatcheries are being developed for full-cycle grow out of urchins. DESCRIPTORS: aquaculture-development; shellfish-culture; aquaculture-techniques; feasibility-studies; Mya-arenaria; Placopecten-magellanicus; Strongylocentrotus-droebachiensis; ANW,-Canada,-Fundy-Bay; Canada, -Maritime-Prov.; marine-aquaculture CLASSIFICATIONS: Aquaculture:-Shellfish-culture-1583 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA9700331 ACCESSION NUMBER: 4034276 UPDATE CODE: 9706 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 65 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Madreporite function and fluid volume relationships in sea urchins AUTHOR(S): Ferguson,-J.C. AUTHOR AFFILIATION: Galbraith Mar. Sci. Labs., Eckerd Coll., P.O. Box 12560, St. Petersburg, FL 33733, USA SOURCE (BIBLIOGRAPHIC CITATION): BIOL.-BULL.-MAR.-BIOL.-LAB.-WOODS-HOLE 1996 vol. 191, no. 3, pp. 431-440 INTERNATIONAL STANDARD NUMBERS: ISSN 0006-3185 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: An effort was made to demonstrate an influx of seawater through the madreporites of sea urchins and to evaluate how such an influx, along with osmotic differences and other factors, could contribute to fluid homeostasis. Fluorescent microbeads placed in the medium of Strongylocentrotus droebachiensis were taken up into the pore canals and stone canal and distributed in small numbers) to the distal tube feet, confirming a bulk inflow of seawater through the madreporite, where it is partially purified. Probably none of this fluid stream is diverted to the perivisceral coelom (as it is in asteroids), since experiments with Strongylocentrotus pallidus showed no significant movement of a soluble fluorescent tracer into that compartment. The osmotic concentrations of the perivisceral coelomic fluids in these two species, and in Strongylocenrotus franciscanus, were higher than that of ambient seawater by 2.66 plus or minus 0.39 mosmol kg super(-1) (mean plus or minus SE). That small hyperosmoticity, along with the net hydrostatic pressure differences induced by the flexing peristome, probably stabilizes body fluid volume. Likewise, fluid in the tube feet of S. franciscanus is elevated by 7.94 plus or minus 1.04 mosmol kg super(-1) above seawater, which should contribute to their inflation. Blockage of the madreporite does not lead to an obviously reduced activity of the tube feet, but over the long term, an influx through the madreporite is necessary. Specimens of S. droebachiensis with an obstructed madreporite, fed ad libitum, had significantly (P < 0.006) reduced gut contents vs controls after 28 days, indicating impaired movement or feeding; and the body weights (i.e., volumes) of unfed specimens were significantly (P < 0.013) more reduced after 21 days. Compared to starfish, the rigid test of sea urchins reduces the need for an influx of seawater through the madreporite, but some small admission is still essential. DESCRIPTORS: osmoregulation-; adaptations-; Strongylocentrotus-droebachiensis; Strongylocentrotus-franciscanus; osmotic-adaptations; Echinodermata- IDENTIFIERS: madreporite-function; fluid-volume-regulation; tube-feet CLASSIFICATIONS: Invertebrate-biology:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9706912 ACCESSION NUMBER: 4024358 UPDATE CODE: 9706 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2046829 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=21371 -- LIB HAS: Feb.1994- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Fish-Ocean Stacks -- Call number: 570.5 BB - - LIB HAS: v.86- (1944-) -- Latest issues on Display Location: FriHarbor Periodicals -- Shelved by title: Biological Bulletin -- Call number: 570.5 BB -- LIB HAS: v.32-41, 43- (1917-) Location: NatSci Periodicals -- Call number: 570.5 BB -- LIB HAS: v.1- (1899-) -- LATEST ISSUES ON DISPLAY Location: Tacoma Microforms -- Call number: Microfilm TAC-423 - - LIB HAS: v.178-195 (1990-1998) Location: Tacoma Periodicals -- Call number: QH301 .B38 -- LIB HAS: v.196 no.2- (Apr. 1999-) Record 66 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Effects of removing sea urchins (Strongylocentrotus droebachiensis): Stability of the barren state and succession of kelp forest recovery in the east Atlantic AUTHOR(S): Leinaas,-H.P.; Christie,-H. AUTHOR AFFILIATION: Univ. Oslo, Dep. Biol., Div. Zool., P.O. Box 1050, Blindern, N-0316 Oslo, Norway SOURCE (BIBLIOGRAPHIC CITATION): OECOLOGIA 1996 vol. 105, no. 4, pp. 524-536 INTERNATIONAL STANDARD NUMBERS: ISSN 0029-8549 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Stability properties of the barren state of a kelp forest-sea urchin system were studied in northern Norway. The ability of the sea urchin Strongylocentrotus droebachiensis to maintain high population densities and recover from perturbations, and the succession of kelp forest revegetation, were studied experimentally by reducing the sea urchin density on a barren skerry. Additional information was obtained from community changes following a natural, but patchy, sea urchin mortality that varied between sites. On the barren grounds, high sea urchin densities (30-50 per m super(2)) is maintained by annual recruitment. Severe reductions of sea urchin densities initiated luxuriant kelp growth, while more moderate reductions allowed establishment of opportunistic algae (during spring and early summer), but no kelps. Succession of algal growth, after the severe decline in sea urchin densities, followed a predictable pattern. At first the substrate was colonized by filamentous algae, but within few weeks they were outcompeted by the fast growing kelp Laminaria saccharina. After 3-4 years of the removal experiment, the slower-growing, long-lived kelp L. hyperborea became increasingly dominant. Increased food availability after reduction in sea urchin density led to increased individual growth of the remaining sea urchins. However, the population density did not increase, neither from recruitment nor immigration from adjacent areas with high sea urchin densities. Possibly, early establishment of a dense kelp stand, may represent a breakpoint in the ability of sea urchins to reestablish a barren state. The ability of L. saccharina quickly to invade and monopolize an area may have both positive and negative effects on the succession towards the climax L. hyperborea kelp forest. Competitive interactions may slow the process, but development of a dense stand of L. saccharina will also reduce grazing risk on scattered recruits of the more slowly growing L. hyperborea. DESCRIPTORS: Strongylocentrotus-droebachiensis; Laminaria-; Norway-; marine-ecosystems; succession-; ecosystem-stability; kelp-beds; ecological-succession; Laminaria-saccharina; Laminaria-hyperborea; climax-community; ecological -associations; interspecific-relationships; intraspecific-relationships; ANE,-Norway; kelps- CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -general--1483; Botany:-General-1221; Invertebrate-biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: CS9704706 ACCESSION NUMBER: 4006243 UPDATE CODE: 9703 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00442/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2023889 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968-1999) Location: FriHarbor Periodicals -- Shelved by title: Oecologia -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968 -1999) Location: NatSci Periodicals -- Call number: QH540 .O32 -- LIB HAS: v.1- (1968-) -- LATEST ISSUES ON DISPLAY Record 67 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Prepared food coupled with manipulation of photoperiod yield an out-of -season crop for the northeastern sea urchin AUTHOR(S): Walker,-C.W.; Lesser,-M.P. AUTHOR AFFILIATION: Dep. Zool., Univ. New Hampshire, Durham, NH 03824, USA CONFERENCE INFORMATION: 88. Annu. Meeting of the National Shellfisheries Association, Baltimore, MD (USA), 14-18 Apr 1996 SOURCE (BIBLIOGRAPHIC CITATION): J.-SHELLFISH-RES. 1996 vol. 15, no. 2, pp. 531-532 INTERNATIONAL STANDARD NUMBERS: ISSN 0077-5711 NOTES: Summary only. PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The fishery for the green sea urchin (Strongylocentrotus droebachiensis) has rapidly grown to become the second largest in the Northeastern United States behind lobsters. Overfishing has drastically depleted once abundant natural populations. Two other problems naturally plague the industry. One of these is poor roe quality in a large percentage of the urchins harvested, leading to a lower than maximum price. Another is the short period when roe quality is high. There is a window of time from September until February when urchins have firm, ripe gonads. If urchins in a land based aquaculture facility could be fed a prepared food and be induced to ripen again after February, then the period of availability of highest quality roe could be expanded, greatly increasing the market potential for Gulf of Maine urchin roe. We have coupled: 1) enhancement of gonadal growth of poorly fed urchins utilizing prepared food with 2) photoperiodic manipulation of the gametogenic cycle to produce an out-of-season crop which could be used to exploit a lucrative end of summer market now supplied by Chile. Rather spawned urchins (March, 1995; less than or equal to 6% gonad index) were held under artificial illumination, using astronomic clocks set to simulate June photoperiod and were feed 3 g prepared food/animal/week. This resulted in a significant increase in gonad size compared with field populations ( greater than or equal to 25%) without a corresponding increase in test size. Histological examination of monthly samples of gonads indicates that this growth is a result of increase in size of nutritive phagocytes (which are intragonadal nutrient storage cells) yielding significantly higher gonadal indices than those simultaneously observed in field populations. After 3 months on this feeding regime, urchins were then exposed to September photoperiod which is known to naturally stimulate gametogenesis for urchins in the field. Stereological analysis of histological sections, indicate that spermatogonia in such animals undergo rapid proliferation and normal spermatogenesis three months early. Oogonia also proliferate early, but resulting oocytes undergo minimal vitellogenesis. Testes and ovaries both increase in size to gonad indices of 28-30% which is based on accumulation of normal spermatozoa in males and continued growth of nutritive phagocytes in females. DESCRIPTORS: echinoderm-fisheries; roe-fisheries; marine-aquaculture; induced-breeding; aquaculture-techniques; photoperiods-; diets-; nutritional-requirements; Echinoidea-; ANW,-USA,-Maine-Gulf CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9702124 ACCESSION NUMBER: 3988724 UPDATE CODE: 9703 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2022341 Location: Fish-Ocean Reserve -- Call number: 639.406 N213p -- LIB HAS: v. 45-70, no. 2. (1954 -1980.) Location: MicNews -- Call number: Microcards -- LIB HAS: 1952 -1955, 1958-1960 See records of latest issues received http://catalog.lib.washington.edu/record=b2057706 Location: Fish-Ocean Stacks -- Call number: SH365.A1 J37 -- LIB HAS: v.1- (June 1981-); Latest issues on Display Record 68 of 241 in ASFA 1997-2000/12 TITLE (ENGLISH): Mycosporine-like amino acids provide protection against ultraviolet radiation in eggs of the green sea urchin Strongylocentrotus droebachiensis AUTHOR(S): Adams,-N.L.; Shick,-J.M. AUTHOR AFFILIATION: Dep. Zool., Univ. Maine, 5751 Murray Hall, Orono, ME 04469-5751, USA SOURCE (BIBLIOGRAPHIC CITATION): PHOTOCHEM.-PHOTOBIOL. 1996 vol. 64, no. 1, pp. 149-158 INTERNATIONAL STANDARD NUMBERS: ISSN 0031-8655 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A photoprotective role of ultraviolet radiation-absorbing mycosporine-like amino acids (MAAs) in eggs of the green sea urchin Strongylocentrotus droebachiensis was demonstrated by comparing UV-induced delays in the first division of embryos having either high or low concentrations of MAAs. Embryos from adult urchins fed Laminaria saccharina (no MAAs) had low concentrations of MAAs and experienced a significantly longer UV -induced delay in cleavage (25.1%) than MAA-rich embryos from adults fed Mastocarpus stellatus (12.8% delay) or a combination diet of both macroalgae (12.3% delay). Collectively, these-embryos displayed a significant inverse logarithmic relationship between MAA concentration and percentage cleavage delay, so that the greater the MAA concentration in the eggs, the less they were affected by UV radiation. This is the first study to examine such MAA photoprotection during acute UV exposure using dietary manipulation of cellular MAA concentrations with no prior UV exposure of the experimental subjects. Concentrations of MAAs were also measured in unfertilized eggs, blastulae, gastrulae and early pluteus larvae, providing the first documentation of changes in MAAs during embryological and larval development. The concentration of shinorine (the principal MAA in the eggs) did not change during short-term UV exposure in vivo or long-term exposure in vitro; such photostability is a useful attribute of a natural sunscreen. DESCRIPTORS: eggs-; ultraviolet-radiation; defense-mechanisms; amino-acids; photochemical-reactions; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9701821 ACCESSION NUMBER: 3985332 UPDATE CODE: 9703 LIBRARY HOLDINGS MESSAGE: Connect to 2000+ issues of this title online; UW restricted; http://www.bioone.org/bioone/?request=get-journals-list&issn=0031-8655 See records of latest issues received http://catalog.lib.washington.edu/record=b1996293 Location: Available Online Location: Chem Periodicals -- Call number: 541.3505 PH -- LIB HAS: v.1- (1962-) -- LATEST ISSUES ON DISPLAY Record 69 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Affiliation of the sea urchins Strongylocentrotus echinoides and S. sachalinicus to the species S. pallidus based on a comparison of their genomes AUTHOR(S): Tatarenko,-D.E.; Poltaraus,-A.B. AUTHOR AFFILIATION: Faculty of Biology, Moscow University, Moscow 119899, Russia SOURCE (BIBLIOGRAPHIC CITATION): RUSS.-J.-MAR.-BIOL.;BIOL.-MORYA 1992;1991 vol. 17, no. 3, pp. 168-172;pp. 69-75 INTERNATIONAL STANDARD NUMBERS: ISSN 1063-0740;ISSN 0134-3475 PUBLICATION YEAR: 1992; 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The unique DNA sequences of the sea urchin Strongylocentrotus droebachiensis were compared with those of other members of the genus by the method of DNA molecular hybridization. The differences detected in the genomes of the two morphologically similar species S. droebachiensis and S. pallidus were comparable with the level of DNA divergence in other closely related species, suggesting that the investigated organisms were undoubtedly separate and genetically divergent species. The marked genomic similarity of S. pallidus, S. sachalinicus, and S. echinoides was shown. The degree of DNA sequence divergence of these species did not exceed the level of intraspecific polymorphism known for members of the genus. This provides evidence for the affiliation of S. sachalinicus and S. echinoides with the artic-boreal species S. pallidus which, given such a broad understanding, encompasses a circumpolar range, including Far Eastern seas. The multitude of differences revealed in the comparison of DNA of S. pallidus and Antocidaris crassispina does not provide the basis for uniting genera from the families Stronglyocentrotus and Echinometridae into a single group. According to our data, the time of divergence of these taxons is probably comparable with the age of other families of the order Echinoida (DBO). DESCRIPTORS: genomes-; phylogenetics-; DNA-; Strongylocentrotus-echinoides; Strongylocentrotus-pallidus; Strongylocentrotus-droebachiensis; Strongylocentrotus-sachalinicus CLASSIFICATIONS: Invertebrate-biology:-Genetics-and-evolution-1245 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9623345 ACCESSION NUMBER: 3970024 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2702939 Location: Fish-Ocean Stacks -- Call number: QH91.A1 B5183 -- LIB HAS: v.17 no.3- (May/June 1991-) -- UNBOUND ISSUES ON DISPLAY Location: FriHarbor Stacks -- Call number: QH91.A1 B5183 -- LIB HAS: v.17 no.3-v.19 (May/June 1991-1993) Record 70 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Dietary accumulation of UV-absorbing mycosporine-like amino acids (MAAs) by the green sea urchin (Strongylocentrotus droebachiensis) AUTHOR(S): Carroll,-A.K.; Shick,-J.M. AUTHOR AFFILIATION: Department of Zoology, University of Maine, 5751 Murray Hall, Orono, ME 04469-5751, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1996 vol. 124, no. 4, pp. 561-569 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The bioaccumulation of ultraviolet radiation-absorbing mycosporine-like amino acids (MAAs) by Strongylocentrotus droebachiensis was determined in specimens maintained on MAA-rich and MAA-deficient diets. Individuals were fed either the red alga Mastocarpus stellatus, which has a high concentration of the MAA shinorine (6.98 nmol/mg dry wt), and trace amounts of the MAAs porphyra-334, asterina-330 and palythine, or the brown alga Laminaria saccharina, which contains no detectable MAAs. Reproductively spent urchins were fed ad libitum during a 9 mo period in 1992 to 1993 until they were once again gravid. To monitor accumulation, samples of urchin tissues and ingested food were taken throughout the 9 mo period from males and females maintained on each diet, and the concentrations of MAAs determined using high performance liquid chromatography. Urchins maintained on a diet of M. stellatus showed an ovarian shinorine concentration (8.33 nmol/mg dry wt) 25 times higher than those fed L. saccharina. There was no change in MAA content of testes or somatic tissues in either feeding group. More than 99% of the MAAs present in an experimental meal of M. stellatus were removed during passage through the gut. Previous studies have inferred dietary accumulation of MAAs by comparing MAAs present in animal tissues with the consumer's potential diet in the field. This is the first study to have monitored MAA accumulation in animal tissues in conjunction with a controlled diet having a known MAA composition. Concentrating MAAs in the ovaries may provide eggs released into the water column with protection from damaging solar ultraviolet radiation. DESCRIPTORS: bioaccumulation-; ultraviolet-radiation; amino-acids; feeding-experiments; diets-; statistical-analysis; ovaries-; Strongylocentrotus-droebachiensis; Mastocarpus-stellatus; Laminaria-saccharina; ANW,-USA,-Maine CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9601486 ACCESSION NUMBER: 3967613 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 71 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Recurrent destructive grazing of successionally immature kelp forests by green sea urchins in Vestfjorden, northern Norway AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Department of Fisheries and Natural Science, Bodoe College, N-8002 Bodoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER. 1995 vol. 123, no. 1-3, pp. 95-106 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Bibliogr.: 87 ref. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Outbreak populations of the green sea urchin Strongylocentrotus droebachiensis caused widespread decimation of the original Laminaria hyperborea Fosl. kelp forest in Vestfjorden, Northern Norway, during the early 1980s. In the following decade, some of the resulting urchin -dominated barren grounds reverted to kelp forest, which, after persisting for more than 5 yr, began to be eleminated yet again. Age analysis of annual growth rings in kelp stipes from field sites at Vaeroey Island indicate that the time of initial kelp recovery varied from site to site but took place between 1984 and 1987. The earliest independent observations of localized macrophyte recovery were made in 1984 at the Harbour Pier site, where, by August 1992, the new kelp forest had already been eleminated by recurrent destructive grazing. Sea urchin density inside re-established kelp forests at 3 other sites on Vaeroey Island was 45 to 75 ind./m super(2) in 1992. These urchin populations had significantly aggregated spatial patterns, and recurrent destructive grazing appeared to be imminent. This prediction was verified in 1993 when barren grounds reappeared at all study sites. the threshold conditions for inition of destructive grazing have been approximated by a curve in the aggregation-density plane. Sea urchins in the Vestfjorden area are infected by the recently discovered epizootic endoparasitic nematode Echinomermella matsi. In 1992, the prevalence of E. matsi at Vaeroey Island ranged from 8.8% in the barren ground at the Harbour Pier site, to between 13.6 and 21.6% in the successionally immature kelp forest at the 3 other sites. The observed kelp forest recovery at Vaeroey Island was predicted by the macroparasite hypothesis which states that E. matsi may function as a terminator of sea urchin outbreaks in Northern Norway. However, the succession towards an ecologically mature kelp forest community has been interrupted by the unexpected recurrence of destructive grazing, and the macroparasite hypothesis must therefore be rejected in its present form. Furthermore, these local events may, on the larger time and spatial scales of the current outbreak phenomenon, indicate that the euphotic hard bottom component of the coastal ecosystem in Northern Norway has entered a cyclical domain. DESCRIPTORS: ecological-succession; organism-aggregations; age-determination; population -density; grazing-; epizoites-; fjords-; variance-analysis; parasitic -diseases; size-distribution; Strongylocentrotus-droebachiensis; Laminaria -hyperborea; Echinomermella-matsi; ANE,-Norway,-Nordland,-Vestfjorden CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -general--1483 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: BF9601320 ACCESSION NUMBER: 3967447 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 72 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Availability and consumption of food by common eiders wintering in the Gulf of St. Lawrence: Evidence of prey depletion AUTHOR(S): Guillemette,-M.; Reed,-A.; Himmelman,-J.H. AUTHOR AFFILIATION: Natl. Environ. Res. Inst., Dep. Wildl. Ecol., Grenaavej 12, DK-8410 Ronde, Denmark SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-ZOOL.-REV.-CAN.-ZOOL. 1996 vol. 74, no. 1, pp. 32-38 INTERNATIONAL STANDARD NUMBERS: ISSN 0008-4301 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: To quantify the influence of common eiders (Somateria mollissima) on their food supply in the Gulf of St. Lawrence, eastern Canada, we measured prey availability and patch utilization during two consecutive winters. In this region, eiders fed predominantly near submerged reefs where large populations of blue mussels (Mytilus edulis) and green sea urchins (Strongylocentrotus droebachienensis) were present. Density and biomass of mussels and urchins were estimated for two reefs at the beginning of the winter of 1985-1986 using SCUBA and quadrat sampling. Prey selection was assessed by comparing the size of prey from stomach contents of shot eiders with that of prey found in the habitat. Patch use was quantified from elevated blinds by regularly counting eiders from December to April. Mussels in the habitat were small (mean length 6.5 mm) and formed dense beds (mean density 25 398 individuals/m super(2)), whereas urchins were large (mean diameter 35 mm) and occurred at lower densities (114 individuals/m super(2)). However, the average biomass for these two prey species was similar, 2.8 and 3.1 kg wet mass/m super(2) for mussels and urchins, respectively. The mussels eaten by common eiders tended to be larger than the average size of those available. In contrast, urchins eaten were smaller than the average size present in the habitat. Depending on the reef, consumption of food by eiders ranged from 48 to 69% of the biomass for eiders feeding on mussels and from 3 to 6% of the biomass for urchins. We compared these estimates with those from similar studies and concluded that eiders substantially deplete mussel beds in winter, which in turn seems to affect their distribution. DESCRIPTORS: Somateria-mollissima; food-selection; Mytilus-edulis; Strongylocentrotus -droebachiensis; population-status; population-dynamics; winter-; Canada, -St.-Lawrence-Gulf; food-availability; food-consumption; prey-selection; stomach-content; ANW,-Canada,-St.-Lawrence-Gulf CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425; Ornithology:-General-1361; Malacology:-General-1261 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9621627 ACCESSION NUMBER: 3959518 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2041303 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36147 -- LIB HAS: Mar.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- LIB HAS: Selected full text, Jan.1997- -- UW Restricted Location: FriHarbor Periodicals -- Shelved by title: Canadian Journal Zoology -- Call number: QL1 .C28 -- LIB HAS: v.29- (1951-) Location: NatSci Periodicals -- Call number: 590.5 CAJ -- LIB HAS: v.29- (1951-) -- LATEST ISSUES ON DISPLAY Record 73 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Density-dependent sex ratio in Echinomermella matsi (Nematoda), a parasite of the sea urchin Strongylocentrotus droebachiensis AUTHOR(S): Stien,-A.; Halvorsen,-O.; Leinaas,-H.-P. AUTHOR AFFILIATION: Zoological Mus., Univ. Oslo, Sarsgt. 1, 0562 Oslo, Norway SOURCE (BIBLIOGRAPHIC CITATION): PARASITOLOGY 1996 vol. 112, no. 1, pp. 105-112 INTERNATIONAL STANDARD NUMBERS: ISSN 0031-1820 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: We investigated the adult sex ratio in 70 infrapopulations of the nematode Echinomermella matsi, a parasite of the green sea urchin Strongylocentrotus droebachiensis. The adult sex ratio was skewed towards female dominance at low adult intensity and towards male dominance at high adult intensity. We hypothesize that this is due to differences between the sexes in development and mortality rates, or that female recruitment is density dependent. A model with differences between the sexes in developmental and mortality rates may develop the observed sex ratios if the female developmental and mortality rates are several times that of the males. A large difference in developmental rates between the sexes appears unreasonable because the developmental rate for both sexes is low, and the predicted low female life-expectancy is unlikely because the males appear to accumulate in infrapopulations as the females age. Density dependence of female numbers is, however, supported by a significantly lower female recruitment in infrapopulations with old females. We also find that the mean male length is negatively related to measures of crowding, thereby supporting the hypothesis that competition is of importance in E. matsi infrapopulations. A female bias at low intensities of infection, a density dependence in female recruitment and the taxonomic position of E. matsi indicate that sex may be environmentally determined in this nematode. DESCRIPTORS: Echinomermella-matsi; population-structure; sex-ratio; density-dependence; sex-determination; Norway-; Strongylocentrotus-droebachiensis; parasites-; Nematoda-; ANE,-Norway; environmental-factors CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -parasites-and-diseases-1484; Population-studies:-Population-structure -1441; Invertebrate-biology:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: CS9621265 ACCESSION NUMBER: 3956731 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.journals.cambridge.org/journal_Parasitology See records of latest issues received http://catalog.lib.washington.edu/record=b2024961 Location: Available Online Location: FriHarbor Stacks -- Call number: 591.69 PA -- LIB HAS: v. 15-73 (1923-1976) Location: Health Serials -- Shelved by title: Parasitology -- Call number: 591.69 PA -- LIB HAS: v.1(1908) -v.10(1917/1918), v.38(1947/1948)-- -- Pre-1930 volumes in Basement Storage Location: NatSci Periodicals -- Call number: 591.69 PA -- LIB HAS: v. 1, 11-85 (1908-1982) Record 74 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Evolution of egg size in free-spawners: Consequences of the fertilization -fecundity trade-off AUTHOR(S): Podolsky,-R.D.; Strathmann,-R.R. AUTHOR AFFILIATION: Hopkins Mar. Stn., 100 Oceanview Blvd., Pacific Grove, CA, USA SOURCE (BIBLIOGRAPHIC CITATION): AM.-NAT. 1996 vol. 148, no. 1, pp. 160-173 INTERNATIONAL STANDARD NUMBERS: ISSN 4801-0001 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Recently, Levitan (1993) has proposed a hypothesis to explain the evolution of egg size in marine invertebrates in terms of the probability of egg fertilization. Using a model of fertilization kinetics developed by Vogel et al. (1982), Levitan predicts that larger eggs will be fertilized at a greater rate because they provide a larger target for sperm. He concludes that conditions of sperm limitation can select for larger eggs and that variation in such conditions can contribute to observed patterns of interspecific variation in egg size. As will be shown here, greater zygote production by Strongylocentrotus droebachiensis relative to its congeners results from interspecific differences in egg fertilizability and sperm half-life, not from larger egg size. DESCRIPTORS: Strongylocentrotus-; evolution-; eggs-; fertilization-; reproductive -strategy; marine-invertebrates; dimensions- CLASSIFICATIONS: Invertebrate-biology:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9621061 ACCESSION NUMBER: 3955944 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 75 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Sea urchin outbreaks and epizootic disease as regulating mechanisms in coastal ecosystems AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Dep. Fish. and Nat. Sci., Bodo Coll., N-8002 Bodo, Norway CONFERENCE INFORMATION: 28. European Marine Biology Symp., Hersonissos, Crete (Greece), 1993 SOURCE (BIBLIOGRAPHIC CITATION): BIOLOGY-AND-ECOLOGY-OF-SHALLOW-COASTAL-WATERS. Eleftheriou,-A.;Ansell, -A.D.;Smith,-C.J.-eds. FREDENSBORG-DENMARK OLSEN-and-OLSEN 1995 pp. 303-308 INTERNATIONAL STANDARD NUMBERS: ISBN 87-85215-287 NOTES: Available at http://www.imbc.gr/library/abstracts/embs/X0027_38.html (20 Aug 1996). PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The green sea urchin, Strongylocentrotus droebachiensis, is one of the most important biological determinants of community structure in the shallow hard-bottom communities of the North Atlantic. Outbreak populations of this species can decimate entire kelp forests, and maintain the resulting barren ground for extended periods of time thereby greatly reducing the primary productivity, biodiversity and structural complexity of the coastal ecosystem. The hypothesis that outbreaks of S. droebachiensis may be terminated by epizootic disease is consistent with results from ongoing research in northern Norway, and available evidence from eastern Canada. Barren grounds in northern Norway, where the sea urchin population was heavily infected by the large nematode, Echinomermella matsi, have reverted to kelp forest within the past five years. Although the outbreak termination process appears to be more gradual, and more spatially variable, than was observed during the microparasitic sea urchin epizootics reported from eastern Canada and elsewhere, this is nevertheless the first indication that a macroparasite may regulate the structure of a coastal ecosystem by functioning as a terminator of sea urchin outbreaks. Furthermore, the recent parasite-related demise of the sea urchin population at Godoystraumen, along with the recurrence of destructive grazing in recently re-established kelp forests at Vaeroy Island, northern Norway, would suggest that the euphotic hard-bottom component of the coastal ecosystem has entered a cyclical domain. DESCRIPTORS: Strongylocentrotus-droebachiensis; epizoites-; coastal-waters; biological -control; parasites-; Echinomermella-matsi; ecosystem-management; marine -invertebrates; Laminaria- CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions:-pests -and-control-1485; Environmental-quality:-Conservation,-wildlife -management-and-recreation--1523 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-3:-Aquatic -Pollution-and-Environmental-Quality (Q5) INPUT CENTER NUMBER: NO9602806 ACCESSION NUMBER: 3949204 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 76 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The role of predation in regulating sea urchin populations in eastern Canada AUTHOR(S): Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Biology, Dalhousie Univ., Halifax, NS B3H 4J1, Canada CONFERENCE INFORMATION: Biotic and Abiotic Interactions Regulating Life Cycle of Marine Invertebrates, Villefranche-sur-Mer (France), 19-23 Sep 1994 SOURCE (BIBLIOGRAPHIC CITATION): BIOTIC-AND-ABIOTIC-INTERACTIONS-REGULATING-LIFE-CYCLE-OF-MARINE -INVERTEBRATES.-ACTES-DU-COLLOQUE-INTERACTIONS-DES-FACTEURS-BIOTIQUES-ET -ABIOTIQUES-SUR-LE-CYCLE-DE-VIE-DES-INVERTEBRES-MARINS. Fenaux, -L.;Guillou,-M.-eds. PARIS-FRANCE GAUTHIERS-VILLARS 1996 vol. 19, no. 3-4 pp. 421-430 INTERNATIONAL STANDARD NUMBERS: ISSN 0399-1784 SERIES TITLE/INFORMATION: OCEANOL.-ACTA vol. 19, no. 3-4 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The green sea urchin Strongylocentrotus droebachiensis is the dominant grazer in the rocky subtidal zone in eastern Canada and its local abundance largely determines the structure and dynamics of the coastal ecosystem. Predation has been cited as an important factor controlling populations of this species, although the evidence for this assertion is equivocal. In this review, I examine the effects of predators on the distribution, abundance and behaviour of Strongylocentrotus droebachiensis at each life history stage and evaluate the potential for predatory control. I conclude that our understanding of interactions between this species and its predators is insufficient to support any generalisations about the role of predation in regulating populations. Carefully designed field and laboratory experiments are required to rigorously test hypotheses about the effects of predators under realistic conditions, and to identify critical life history stages. Numerical modelling is a promising but underutilized approach in the study of sea urchin population dynamics and predator-prey interaction. DESCRIPTORS: marine-invertebrates; population-control; predation-; life-history; Strongylocentrotus-droebachiensis; ANW,-Canada; Echinodermata- CLASSIFICATIONS: Productivity,-ecosystems,-species-interactions:-Species-interactions: -general--1483 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: IF9600766 ACCESSION NUMBER: 3938485 UPDATE CODE: 9612 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/03991784 See records of latest issues received http://catalog.lib.washington.edu/record=b2044932 Location: Available Online Location: Fish-Ocean Stacks -- Call number: GC1 .O33 -- LIB HAS: v.1- (1978-) -- LATEST ISSUES IN: DISPLAY Record 77 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Invertebrate Working Papers reviewed by the Pacific Stock Assessment Review Committee (PSARC) in 1993 and 1994 AUTHOR(S): Hand,-C.M.; Waddell,-B.J.-(Eds.) CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Nanaimo, BC (Canada), Sci. Branch SOURCE (BIBLIOGRAPHIC CITATION): CAN.-TECH.-REP.-FISH.-AQUAT.-SCI.-RAPP.-TECH.-CAN.-SCI.-HALIEUT.-AQUAT. 1996 308 pp INTERNATIONAL STANDARD NUMBERS: ISSN 0706-6457 NOTES: NTIS-Accession Number: MIC-96-05872. PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Working Papers prepared in 1994 by the Department of Fisheries and Oceans staff and reviewed by the Shellfish Committee of the Pacific Stock Assessment Review Committee(PSARC) are presented. These documents form the basis of biological advice given to managers for the development of fishing plans for 1995. Topics discussed include a biomass survey of Tofino ground shrimp (Pandalus jordanii). a review of experimental prawn (P. platyceros) fishing in Howe Sound, a review of data needs for assessing the inshore shrimp trawl fisheries, an evaluation of historical abalone (Haliotis kamtschatkana) surveys conducted in the Queen Charlotte Islands and in South Coast areas, results of abalone surveys conducted in the Central Coast and Queen Charlotte Islands, results of geoduck (Panopea abrupta) surveys conducted on Comox Bar and Marina Island, precautionary quoto recommendations for green sea urchins (Strongylocentrotus droebachiensis), the effect of landing state on sea cucumber (Parastichopus californicus) quota setting and monitoring, results of intertidal clam surveys from west coast beaches and a review of the effect of sea otter (Enhydra lutris) on invertebrate fisheries in B.C. DESCRIPTORS: shellfish-fisheries; stock-assessment; fishery-management; fishery-surveys; predation-; predators-; Pandalus-jordani; Pandalus-platyceros; Haliotis -kamtschatkana; Panopea-abrupta; Strongylocentrotus-droebachiensis; Parastichopus-californicus; Enhydra-lutris; INE,-Canada,-British-Columbia; gastropod-fisheries; shrimp-fisheries; echinoderm-fisheries; marine -mammals; Canada,-British-Columbia CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -Biology:-General:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CA9600060 ACCESSION NUMBER: 3912651 UPDATE CODE: 9609 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2052716 Location: Fish-Ocean Microforms -- Call number: Microfiche MB-303 -- LIB HAS: no.927- (1980 -) -- Incomplete; Some only available in print format Location: Fish -Ocean Stacks -- Call number: SH1 .C352 -- LIB HAS: no.925- (1980-) -- Incomplete; Some volumes listed separately; Some only in microfiche Record 78 of 241 in ASFA 1988-1996 TITLE (ENGLISH): A new community state in the southwestern Gulf of Maine -- is overfishing to blame? AUTHOR(S): Harris,-L.G. AUTHOR AFFILIATION: Zool., UNH, Durham, NH 03824, USA CONFERENCE INFORMATION: 24. Annu. Benthic Ecology Meeting, Columbia, SC (USA), 7-10 Mar 1996 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-FOURTH-ANNUAL-BENTHIC-ECOLOGY-MEETING,-HELD-IN-COLUMBIA,-SOUTH -CAROLINA,-MARCH-7-10,-1996. Woodin,-S.A.;Allen,-D.M.;Stancyk, -S.E.;Williams-Howze,-J.;Feller,-R.J.;Wethey,-D.S.;Pentcheff, -N.D.;Chandler,-G.T.;Decho,-A.W.;Coull,-B.C.-eds. 1996 p. 44 NOTES: Abstract only PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Two community states have been common in shallow rocky subtidal habitats within the Gulf of Maine - kelp beds and barren grounds dominated by the sea urchin Strongylocentrotus droebachiensis. As urchin populations have fluctuated due to disease and harvesting, emphemeral algae and the blue mussel, Mytilus edulis have become increasingly common in subtidal habitats. Subtidal mussel beds attract large populations of sea stars, Asterias spp., which overwhelm the mussel populations and open space for recruitment of algal populations. Sea star densities decline due to cannabalism and the algae provides substrate for a new recruitment of mussels. A progression of algae, mussels, seastars and algae oscillating on a two year cycle may represent a new alternate community state in the Gulf of Maine. It is suggested that this is a logical consequence of a sustained vacuum created by continued overharvesting. DESCRIPTORS: community-composition; ecological-disturbance; overfishing-; ecological -succession; marine-invertebrates; echinoderm-fisheries; ANW,-USA,-Maine -Gulf; Strongylocentrotus-droebachiensis; Mytilus-edulis; Asterias- CLASSIFICATIONS: Aquatic-Communities:-Habitat-community-studies-1463 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9613661 ACCESSION NUMBER: 3904780 UPDATE CODE: 9609 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 79 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Rapid resource allocation dynamics of the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): Russell,-M.P. AUTHOR AFFILIATION: Biol. Dep., Villanova Univ., Villanova, PA 19085, USA CONFERENCE INFORMATION: 24. Annu. Benthic Ecology Meeting, Columbia, SC (USA), 7-10 Mar 1996 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-FOURTH-ANNUAL-BENTHIC-ECOLOGY-MEETING,-HELD-IN-COLUMBIA,-SOUTH -CAROLINA,-MARCH-7-10,-1996. Woodin,-S.A.;Allen,-D.M.;Stancyk, -S.E.;Williams-Howze,-J.;Feller,-R.J.;Wethey,-D.S.;Pentcheff, -N.D.;Chandler,-G.T.;Decho,-A.W.;Coull,-B.C.-eds. 1996 p. 72 NOTES: Abstract only PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The green sea urchin, Strongylocentrotus droebachiensis, has the capacity to significantly increase gonadal tissue in response to different algal diets over a period as short as three weeks. Sea urchins were collected from one site on Swans Island, Maine and held in a recirculating sea water system. Initially, animals were dissected to determine the gonad index (% body weight of gonad). The remaining animals were distributed among four groups of equal number and size distribution. Each group was assigned randomly to one of four feeding treatments: Alaria esculenta, Laminaria digitata, Laminaria longicruris, and Ascophyllum nodosum. Animals were provided with an overabundance of food during the experiment. Half of the animals from each treatment were dissected after three weeks and the rest after six weeks. Significant differences were found among the treatments at both the three and six week-dissections with Alaria esculenta producing the greatest increase in the gonad index. DESCRIPTORS: diets-; animal-reproductive-organs; food-availability; seaweeds-; Strongylocentrotus-droebachiensis; Echinodermata-; Alaria-esculenta; Laminaria-digitata; Laminaria-longicruris; Ascophyllum-nodosum; ANW,-USA, -Maine,-Swan-I. CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9612705 ACCESSION NUMBER: 3899031 UPDATE CODE: 9609 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 80 of 241 in ASFA 1988-1996 TITLE (ENGLISH): A comparison of the growth of juvenile Strongylocentrotus droebachiensis on a natural and artificial diet AUTHOR(S): Williams,-C. AUTHOR AFFILIATION: Dep. Zool., UNH, Durham, NH 03824, USA CONFERENCE INFORMATION: 24. Annu. Benthic Ecology Meeting, Columbia, SC (USA), 7-10 Mar 1996 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-FOURTH-ANNUAL-BENTHIC-ECOLOGY-MEETING,-HELD-IN-COLUMBIA,-SOUTH -CAROLINA,-MARCH-7-10,-1996. Woodin,-S.A.;Allen,-D.M.;Stancyk, -S.E.;Williams-Howze,-J.;Feller,-R.J.;Wethey,-D.S.;Pentcheff, -N.D.;Chandler,-G.T.;Decho,-A.W.;Coull,-B.C.-eds. 1996 p. 87 NOTES: Abstract only PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A laboratory study compared the growth of juvenile S. droebachiensis placed on an ad lib diet of an artificial feed created by John Lawrence with the most effective known natural diet, Laminaria and Membranipora. Newly settled urchins were collected from settlement panels and Corallina officinalis samples in the Gulf of Maine. Individual organisms were placed on the natural or artificial diet in separate mesh-sided containers in tanks at 15 Celsius and 34 ppt. There was a large variability in the growth rates of individuals. The artificial diet caused the greatest initial growth but urchins fed the natural diet had the greatest total growth. Urchins fed artificial feed suffered a higher mortality than the organisms fed the natural diet in times of stress. The organisms fed the artificial pellet diet had a paler test color and shorter spines compared to the normal green color and longer spines of the urchins on the natural diet. DESCRIPTORS: growth-; feeding-experiments; diets-; Strongylocentrotus-droebachiensis; Laminaria-; Membranipora-; Corallina-officinalis; Echinodermata-; ANW, -USA,-Maine-Gulf CLASSIFICATIONS: Autecology:-Age-and-growth-1424 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9612671 ACCESSION NUMBER: 3898997 UPDATE CODE: 9609 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 81 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Is growth rate of sea urchins (Strongylocentrotus droebachiensis) limited by food supply in barren grounds? AUTHOR(S): Meidel,-S.K.; Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, NS B3H 4J1, Canada CONFERENCE INFORMATION: 24. Annu. Benthic Ecology Meeting, Columbia, SC (USA), 7-10 Mar 1996 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-FOURTH-ANNUAL-BENTHIC-ECOLOGY-MEETING,-HELD-IN-COLUMBIA,-SOUTH -CAROLINA,-MARCH-7-10,-1996. Woodin,-S.A.;Allen,-D.M.;Stancyk, -S.E.;Williams-Howze,-J.;Feller,-R.J.;Wethey,-D.S.;Pentcheff, -N.D.;Chandler,-G.T.;Decho,-A.W.;Coull,-B.C.-eds. 1996 p. 60 NOTES: Abstract only PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Generally it is assumed that sea urchins on barren grounds are food-limited and therefore grow slower than those in and around kelp beds, resulting in different size distributions between these habitats. However, size-at-age data from a population in southwestern Nova Scotia showed that growth rates were similar between habitats and it was the age structure of the populations that differed. Gut content analysis showed that sea urchins in both habitats have similar quantities of food in their guts but food quality is lower in the barrens. While available food seems to be sufficient to allow for similar growth rates in both habitats, the additional amount of energy available to sea urchins in kelp beds is allocated to reproduction. DESCRIPTORS: growth-; food-availability; ecological-associations; stomach-content; environmental-conditions; marine-environment; Echinodermata- CLASSIFICATIONS: Autecology:-Age-and-growth-1424 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9612648 ACCESSION NUMBER: 3898974 UPDATE CODE: 9609 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 82 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Building a sustainable sea urchin fishery in Massachusetts AUTHOR(S): McLaughlin,-M.W.; Cheney,-D.P.; Goldhor,-S.; Giurca,-R. AUTHOR AFFILIATION: Mar. Sci. Cent., Northeastern Univ., East Point, Nahant, MA 01908, USA CONFERENCE INFORMATION: 24. Annu. Benthic Ecology Meeting, Columbia, SC (USA), 7-10 Mar 1996 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-FOURTH-ANNUAL-BENTHIC-ECOLOGY-MEETING,-HELD-IN-COLUMBIA,-SOUTH -CAROLINA,-MARCH-7-10,-1996. Woodin,-S.A.;Allen,-D.M.;Stancyk, -S.E.;Williams-Howze,-J.;Feller,-R.J.;Wethey,-D.S.;Pentcheff, -N.D.;Chandler,-G.T.;Decho,-A.W.;Coull,-B.C.-eds. 1996 p. 58 NOTES: Abstract only PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Although the green sea urchin (Strongylocentrotus droebachiensis) fishery in Massachusetts is only six years old, concerns have already been raised about overharvesting and damage to the benthic habitat caused by dragging for them. Recently we initiated studies to investigate the population biology of urchins and different trapping and caging/holding methods. Sampling from six sites along the Northshore has shown variability in densities, size distributions, and gonadal content. Analysis of size -frequency distributions reveals numbers of juveniles (0-9 mm) are low. A processed feed made primarily of Pilayella littoralis and Laminaria saccharina was eaten by urchins in Y-maze and other food preference studies performed with natural and processed feeds. This alternative feed is being further tested in the field and laboratory for gonadal enhancement and resistance to disintegration by water turbulence. DESCRIPTORS: echinoderm-fisheries; Strongylocentrotus-droebachiensis; overfishing-; ANW, -USA,-Massachusetts; Pilayella-littoralis; Laminaria-saccharina; fishery -management; population-density CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9611532 ACCESSION NUMBER: 3892268 UPDATE CODE: 9609 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 83 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Patterns of echinoderm settlement in kelp beds and sea urchin dominated barren grounds in Nova Scotia AUTHOR(S): Balch,-T.; Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, Nova Scotia, Canada B3H 4J1 CONFERENCE INFORMATION: 24. Annu. Benthic Ecology Meeting, Columbia, SC (USA), 7-10 Mar 1996 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-FOURTH-ANNUAL-BENTHIC-ECOLOGY-MEETING,-HELD-IN-COLUMBIA,-SOUTH -CAROLINA,-MARCH-7-10,-1996. Woodin,-S.A.;Allen,-D.M.;Stancyk, -S.E.;Williams-Howze,-J.;Feller,-R.J.;Wethey,-D.S.;Pentcheff, -N.D.;Chandler,-G.T.;Decho,-A.W.;Coull,-B.C.-eds. 1996 p. 17 NOTES: Abstract only PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Settlement of echinoderm larvae was measured using artificial collectors at three sites in the rocky subtidal zone (10 m depth) on the Atlantic coast of Nova Scotia. Each site consisted of two adjacent habitats: a sea urchin (Strongylocentrotus droebachiensis) dominated barren ground and a kelp bed (Laminaria spp.). Suspended collectors made of 0.05 m super(2) panels of plastic turf were deployed on the bottom and 2 m above the bottom in each habitat, and sampled bi-weekly between June and November, 1992 to 1994. Distinct settlement pulses of ophiuroids, asteroids and echinoids occurred between June and September of each year but the magnitude of each pulse varied between years and species. All species of echinoderms showed higher rates of settlement, on the bottom, in barren grounds than in kelp beds but there was no consistent pattern of settlement in the collectors suspended 2 m above both habitats. DESCRIPTORS: biological-settlement; ANW,-Canada,-Nova-Scotia; Laminaria-; Strongylocentrotus-droebachiensis; ecological-associations; habitat -selection; algae-; Echinoidea- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9611478 ACCESSION NUMBER: 3892215 UPDATE CODE: 9609 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 84 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Parasitic castration of the green echinoid Strongylocentrotus droebachiensis by the nematode endoparasite Echinomermella matsi: Reduced reproductive potential and reproductive death AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Dep. Fish. and Nat. Sci., Bodo Coll., N-8002 Bodo, Norway SOURCE (BIBLIOGRAPHIC CITATION): DIS.-AQUAT.-ORG. 1996 vol. 24, no. 3, pp. 215-226 INTERNATIONAL STANDARD NUMBERS: ISSN 0177-5103 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The echinoid Strongylocentrotus droebachiensis in the Vestfjorden area of northern Norway is infected by the epizootic nematode endoparasite Echinomermella matsi. The incidence of E. matsi was 68.8% in a sample taken from Godoystraumen, and 16.4% in a sample from Vaeroy Island. The high-incidence sample was collected in late February prior to the annual spawning season, when the echinoids have sexually mature gonads, and the low-incidence sample was collected in late August, when the echinoids have sexually immature gonads. Infected echinoids in both samples had smaller gonads than non-infected echinoids. The parasite-related reduction in gonad size for adult echinoids greater than or equal to 35 mm in test diameter was approximately 75% in the high-incidence sample, and approximately 63% in the low-incidence sample. Most S. droebachiensis in the high-incidence sample were infected before they reached a size of 20 mm test diameter. The infected individuals had parasite loads ranging from approximately 0.01 to >5 g. However, lightly infected individuals with loads <0.1 g were most common, comprising 52% of the infected individuals in the high-incidence sample, and 72% of the infected individuals in the low-incidence sample. The abundance of heavily infected echinoids with parasite loads greater than or equal to 0.1 g peaked in the [30, 35> mm size group, but dropped abruptly in the next interval of the size -frequency distribution. Although the peak abundance of heavily infected echinoids coincided with the onset of sexual maturity for non-infected echinoids, the majority of the infected echinoids in this size group were still classified as virtual castrates of unknown sex. These results suggest that a large proportion of infected echinoids never reproduce, but are effectively castrated as juveniles and succumb to parasite-related mortality before they reach a size of 35 to 40 mm. DESCRIPTORS: parasitic-castration; endoparasites-; Strongylocentrotus-droebachiensis; Echinomermella-matsi; sexual-reproduction; survival-; ANE,-Norway CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases -1484; Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: CS9608807 ACCESSION NUMBER: 3881046 UPDATE CODE: 9606 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/dao/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2068607 Location: Available Online Location: Fish-Ocean Stacks -- Call number: SF997.5 .M33 D56 -- LIB HAS: v.1- (1985-) Record 85 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Artificial diets in sea urchin culture: Effects of dietary protein level and other additives on egg quality, larval morphometrics, and larval survival in the green sea urchin, Strongylocentrotus droebachiensis AUTHOR(S): De-Jong-Westman,-M.; Qian,-P.-Y.; March,-B.E.; Carefoot,-T.H. SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-ZOOL.-REV.-CAN.-ZOOL. 1995 vol. 73, no. 11, pp. 2080-2090 INTERNATIONAL STANDARD NUMBERS: ISSN 0008-4301 PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The effect of artificial diets on the size and energy content of eggs and morphometry, survival, and metamorphic success of larvae was investigated in the green sea urchin, Strongylocentrotus droebachiensis, from the standpoint of developing a good broodstock diet for culturists. Groups of sea urchins were fed eight diets over a period of 9 months, then five of these dietary groups were selected for detailed larval-growth studies. The artificial diets differed in protein content and in various additives including mannitol, algin, cholesterol, and beta -carotene; a diet of air -dried kelp was also included. Egg-energy content was highest on a high -protein diet with cholesterol and beta -carotene additives, and the largest eggs so far recorded for the species (2.39 mm super(3) x 10 super( -3)) were produced on a high-protein diet with cholesterol additive. Larval survival to metamorphosis was >92% for all diets save for kelp (<5%). Kelp-fed adults also produced poorly metamorphosing larvae (<2%), suggesting that air-drying causes chemical changes in the kelp that are ultimately detrimental to larval health. Larval developmental rates were fastest on the high-protein beta -carotene formulation. Larvae from this diet group also had the longest arms relative to body length, largest rudiment diameter, largest absolute and relative ciliated-band length (for efficient feeding), and had a high percentage of metamorphosis. These data suggest that a high-protein beta -carotene diet will be useful for conditioning broodstock by prospective sea urchin culturists. DESCRIPTORS: artificial-feeding; feed-composition; nutritional-requirements; proteins-; eggs-; invertebrate-larvae; developmental-stages; Strongylocentrotus -droebachiensis CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9608307 ACCESSION NUMBER: 3874557 UPDATE CODE: 9606 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2041303 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36147 -- LIB HAS: Mar.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- LIB HAS: Selected full text, Jan.1997- -- UW Restricted Location: FriHarbor Periodicals -- Shelved by title: Canadian Journal Zoology -- Call number: QL1 .C28 -- LIB HAS: v.29- (1951-) Location: NatSci Periodicals -- Call number: 590.5 CAJ -- LIB HAS: v.29- (1951-) -- LATEST ISSUES ON DISPLAY Record 86 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Population reductions of Strongylocentrotus droebachiensis (Echinodermata) in Norway and the distribution of its endoparasite Echinomermella matsi (Nematoda) AUTHOR(S): Skadsheim,-A.; Christie,-H.; Leinaas,-H.P. AUTHOR AFFILIATION: Norwegian Inst. Nat. Res. (NINA), Box 1037 Blindern, N-0315 Oslo, Norway SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER. 1995 vol. 119, no. 1-3, pp. 199-209 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Bibliogr.: 60 ref. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Observations of sea urchin Strongylocentrotus droebachiensis mass mortality at Vega Island in mid Norway, and reduced sea urchin density in another area 280 km (aerial line) to the south, initiated a more extensive survey of sea urchin and kelp Laminaria hyperborea Foslie forest distribution along 700 km of coastline. Records of the distribution and prevalence of the nematode Echinomermella matsi, an endoparasite of S. droebachiensis, were also included as the parasite has been postulated to cause sea urchin mass mortality. Sampling was concentrated in 5 areas of coastline along mid and northern Norway. Each area was studied along a wave exposure gradient. Old kelp forests have persisted along the outermost exposed parts of the coastline despite the 20 yr population outbreak of sea urchins. Inshore of the exposed kelp zone and towards the mainland, sea urchin dominated barren grounds still persisted. The distribution and abundance of S. droebachiensis in the southernmost area (Froeya) was greatly reduced, and expansion of kelp into former barren grounds resulted. Reduced numbers of sea urchins and some macroalgal regrowth also occurred in the 2 central areas 140 and 280 km north of Froeya, whilst high population densities of small sized S. droebachiensis on 'barrens' still dominated the inner zone in the 2 northern areas. The study indicated that S. droebachiensis populations, and hence the barren ground state, may be in a labile phase along the southern 300 km of the coast, whilst its state in the northern areas seems more persistent thus far. E. matsi was not found in the southernmost area. S. droebachiensis was heavily infested in the 2 central areas. In northern areas E. matsi was found only at a few sites. The pattern of parasite occurrence and sea urchin regression makes the role of E. matsi in this process questionable and indicates that 1 or more unidentified waterborne agents have been involved. DESCRIPTORS: mortality-causes; population-density; age-composition; endoparasites-; variance-analysis; size-distribution; ecological-distribution; Strongylocentrotus-droebachiensis; Laminaria-hyperborea; Echinomermella -matsi; ANE,-Norway; marine-invertebrates; Echinodermata-; Nematoda-; parasitism- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: BF9601066 ACCESSION NUMBER: 3862984 UPDATE CODE: 9606 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 87 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Tagging sea urchins: A new technique for individual identification AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Department of Fisheries and Natural Science, Bodoe College, N-8002 Bodoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): AQUACULTURE 1996 vol. 139, no. 3-4, pp. 271-284 INTERNATIONAL STANDARD NUMBERS: ISSN 0044-8486 PUBLICATION YEAR: 1996 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ABSTRACT: The green sea urchin, Strongylocentrotus droebachiensis, from northern Norway was implanted with a passive integrated transponder (PIT) tag. There was no tagging mortality, and the long term survival of tagged individuals over a 16 month period was not significantly different from the survival of untagged controls. Growth of the tagged sea urchins appeared normal. No significant differences were detected between the mean diameters of sea urchins in the tagged group and in the control group, and Von Bertalanffy growth curve parameters for the tagged sea urchins fell within the range of previously published estimates for S. droebachiensis. Tag retention was 100% for animals larger than 25 mm in diameter. This size also represents the minimum size for successful implantation of the PIT tag. Tag detection was under 100% on the first trial owing to the inability of the tagging equipment to detect tags which were perpendicular to the signal from the reading device. The PIT tag compares favourably with existing techniques for tagging sea urchins, its indefinite life span allowing unlimited non-destructive sampling of tagged individuals. PIT tags have immediate potential for application in broodstock management and laboratory experiments, but the potential for field applications is still limited by the lack of submersible detection equipment. DESCRIPTORS: Strongylocentrotus-droebachiensis; tagging-mortality; marine-invertebrates; growth-curves; experimental-culture; Echinodermata- CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9606940 ACCESSION NUMBER: 3859197 UPDATE CODE: 9606 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/00448486 Connect to the latest 9 months of this title online; UW restricted; http://www.sciencedirect.com/web -editions?_ob=JournalURL&_cdi=4972&_auth=y&_acct=C000021514&_version=1&_urlVersion=0&_userid=450576&md5=8096389a926d1715a1311aa7c42d73ef&sb=y See records of latest issues received http://catalog.lib.washington.edu/record=b2017886 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: SH1 .A67 -- LIB HAS: v.1- (1972-) -- Unbound issues on Display; Some volumes listed separately Record 88 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Effects of adult salinity acclimation on larval survival and early development of Strongylocentrotus droebachiensis and Strongylocentrotus pallidus (Echinodermata: Echinoidea) AUTHOR(S): Roller,-R.A.; Stickle,-W.B. AUTHOR AFFILIATION: Cent. Coast. and Mar. Stud., Dep. Biol., Lamar Univ., P.O. Box 10037, Beaumont, TX 77710, USA SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-ZOOL.-REV.-CAN.-ZOOL. 1994 vol. 72, no. 11, pp. 1931-1939 INTERNATIONAL STANDARD NUMBERS: ISSN 0008-4301 PUBLICATION YEAR: 1994 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Larval survival and development rates of Strongylocentrotus droebachiensis and Strongylocentrotus pallidus were determined as a function of salinity in two experiments by (i) directly transferring fertilized eggs obtained from adults acclimated to seawater at a salinity of 30ppt to cultures containing seawater at salinities of 30, 27.5, 25, 22.5, 20, 17.5, 15, 12.5, and 10ppt at 10 degree C; and (ii) acclimation of adult sea urchins to the salinity-temperature conditions described above for 2, 3, and 4 weeks prior to spawning. Subsequent development occurred under these acclimation conditions. Development rates and percent survival of larvae prior to metamorphosis varied directly with salinity. Survival of S. pallidus plutei to metamorphosis decreased at salinities below 30ppt. Strongylocentrotus droebachiensis plutei survived to metamorphosis at 20ppt and above. Lactic acid concentrations in the coelomic cavity fluid of adult S. droebachiensis and S. pallidus acclimated to low salinity were significantly higher than initial controls at 30ppt. Cell volumes of fertilized eggs of both species exhibited osmotic swelling when exposed to lowered salinity. LC sub(50) values (ppt), development rates, and percent survival to metamorphosis indicate that acclimation of adult urchins to lower salinity prior to spawning and fertilization does not enhance development or survival of embryos of these two species exposed to low salinity. Furthermore, our results show that S. pallidus larvae are stenohaline when compared with larvae of other echinoderm species. DESCRIPTORS: Strongylocentrotus-droebachiensis; Strongylocentrotus-pallidus; survival-; developmental-stages; water-salinity; larvae-; acclimation-; salinity -effects; salinity-tolerance; invertebrate-larvae CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9604193 ACCESSION NUMBER: 3847161 UPDATE CODE: 9606 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2041303 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36147 -- LIB HAS: Mar.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- LIB HAS: Selected full text, Jan.1997- -- UW Restricted Location: FriHarbor Periodicals -- Shelved by title: Canadian Journal Zoology -- Call number: QL1 .C28 -- LIB HAS: v.29- (1951-) Location: NatSci Periodicals -- Call number: 590.5 CAJ -- LIB HAS: v.29- (1951-) -- LATEST ISSUES ON DISPLAY Record 89 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Differential bioaccumulation of non-ortho-substituted and other PCB congeners in coastal Arctic invertebrates and fish AUTHOR(S): Bright,-D.A.; Grundy,-S.L.; Reimer,-K.J. AUTHOR AFFILIATION: Environ. Sci. Group, Royal Roads Military Coll., FMO Victoria, BC V0S 1B0, Canada SOURCE (BIBLIOGRAPHIC CITATION): ENVIRON.-SCI.-TECHNOL. 1995 vol. 29, no. 10, pp. 2504-2512 INTERNATIONAL STANDARD NUMBERS: ISSN 0013-936X PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The composition of 47 ortho- and seven non-ortho-substituted PCBs in sediment, water, invertebrates, and fish collected from Cambridge Bay, Northwest Territories, Canada, is presented. The congener composition in sea urchins (Strongylocentrotus droebachiensis) was attributed to differences in the log K sub(OW) of individual congeners during uptake from ingested sediment and aqueous solubility during secondary uptake from the water column. Four-horn and short-horn sculpins exhibited selective bioaccumulation of the recalcitrant congeners: those lacking two non -chlorinated carbons in adjacent meta and para positions on the biphenyl ring. The presence of methyl sulfone PCBs in four-horn sculpin liver provided direct evidence for metabolism. The percent composition of total PCB levels in four-horn sculpin livers, contributed by non-ortho -substituted PCBs 77 and 126 (those with potential for dioxin-like toxicity), was relatively constant regardless of total PCB concentration, suggesting that for a given species increased exposure to PCBs does not lead to increased relative concentrations of non-ortho-substituted congeners. Limited data on congeners 77 and 126 in sediment, sea urchins, or four-horn sculpins suggests that, with increasing trophic status, these congeners were diminished rather than enriched relative to the total PCB concentration. DESCRIPTORS: bioaccumulation-; polychlorinated-biphenyls; invertebrates-; fish-; liver-; organic-compounds; Canada,-Northwest-Terr.,-Cambridge-Bay; water-pollution -effects; PCB-compounds; Strongylocentrotus-droebachiensis; Invertebrata-; PCB-; pollution-effects; water-pollution; food-chains; chemical -properties; Cottidae-; PN,-Canada; sediments- CLASSIFICATIONS: Pollution:-Effects-on-organisms-1504 JOURNAL ANNOUNCEMENT: ASFA-3:-Aquatic-Pollution-and-Environmental-Quality (Q5) INPUT CENTER NUMBER: CS9602535 ACCESSION NUMBER: 3837885 UPDATE CODE: 9603 LIBRARY HOLDINGS MESSAGE: Connect to this title online;UW restricted http://pubs.acs.org/subscribe/journals/esthag/browse.html See records of latest issues received http://catalog.lib.washington.edu/record=b2053945 Location: Available Online Location: Bothell/CCC Bnd Periodicl -- Call number: TA170 .E55 - - LIB HAS: v.22-29 (1988-1995) -- Incomplete Location: Bothell/CCC Periodicals -- Shelved by title: Environmental science & technology -- Call number: TA170 .E55 -- Current year only Location: Engr Periodicals -Floor 2 -- Shelved by title: Environmental science and technology -- Call number: TA170 .E55 -- LIB HAS: v.1- (1967-) -- Incomplete v.14, 27; LATEST ISSUES ON DISPLAY Location: Fish-Ocean Stacks -- Call number: TA170 .E55 -- LIB HAS: v.1- (1967-) -- LATEST ISSUES IN: DISPLAY; Incomplete v.22, v.27 Location: Tacoma Periodicals -- Call number: TA170 .E55 -- LIB HAS: v.30- (1996-) -- Latest 12 issues on Tacoma Periodical Display Shelves; Earlier issues in Tacoma Periodical Stacks Record 90 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The effect of different nutrient formulations in artificial diets on gonad growth in the sea urchin Strongylocentrotus droebachiensis AUTHOR(S): De-Jong-Westman,-M.; March,-B.E.; Carefoot,-T.H.* AUTHOR AFFILIATION: Dep. Zool., Univ. British Columbia, 6270 University Blvd., Vancouver, BC V6T 1Z4, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-ZOOL.-REV.-CAN.-ZOOL. 1995 vol. 73, no. 8, pp. 1495-1502 INTERNATIONAL STANDARD NUMBERS: ISSN 0008-4301 PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Several artificial diets were tested for their ability to promote growth of gonads in the green sea urchin, Strongylocentrotus droebachiensis, over a 9-month period. Survival and test growth were also monitored, as were gonad lipid levels and water content (at the middle and end of the reproductive cycle only). The artificial diets differed in amount of protein and in the presence of various additives such as mannitol, algin, cholesterol, and beta -carotene; a diet of air-dried kelp (Nereocystis leutkeana) was included for comparison. Survival was >95% for all diets save a low-protein one (82% survival). Test diameters showed no significant change over time or among dietary treatments. All high-protein formulations produced significantly higher gonad indices than low-protein ones. Addition of beta -carotene to the high-protein formulation significantly increased gonad growth relative to all other diets; this was especially noticeable in December, at the time of best market quality for the roe. Lipid levels were not significantly different among dietary treatments in either November or March, but did show a slight statistically significant rise between these months (21.4-22.7% dry mass). Water content also showed no significant difference among treatments, but was significantly higher in March (82% live weight), just prior to spawning, than in November (70%). Gonad indices for all artificial-diet formulations were higher than any previously recorded for S. droebachienis. DESCRIPTORS: Strongylocentrotus-droebachiensis; artificial-feeding; diets-; animal -reproductive-organs; diets-; seaweeds- CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584; Invertebrate-Biology: -General:-Reproduction-and-development-1244; Aquaculture:-Culture-of-other -aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: CS9601343 ACCESSION NUMBER: 3828292 UPDATE CODE: 9603 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2041303 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36147 -- LIB HAS: Mar.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- LIB HAS: Selected full text, Jan.1997- -- UW Restricted Location: FriHarbor Periodicals -- Shelved by title: Canadian Journal Zoology -- Call number: QL1 .C28 -- LIB HAS: v.29- (1951-) Location: NatSci Periodicals -- Call number: 590.5 CAJ -- LIB HAS: v.29- (1951-) -- LATEST ISSUES ON DISPLAY Record 91 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Reproductive ecology of sea urchin populations in kelp beds and on barren grounds off Nova Scotia AUTHOR(S): Meidel,-S.K.; Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, NS B3H 4J1, USA CONFERENCE INFORMATION: 23. Benthic Ecology Meeting, New Brunswick, NJ (USA), 17-19 Mar 1995 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-THIRD-BENTHIC-ECOLOGY-MEETING. Grassle,-J.P.;Kelsey,-A.;Oates, -E.;Snelgrove,-P.V.-eds. Rutgers-the-State-Univ.,-New-Brunswick,-NJ-USA. -Inst.-Marine-Coastal-Sciences 1995 vp NOTES: Abstract only. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: We are investigating spatial and temporal reproductive patterns in sea urchins (Strongylocentrotus droebachiensis) at two sites where destructive grazing of kelp beds is taking place. At each site, sea urchins from three distinct subpopulations are being sampled over a 2-year period: 1) those in the kelp bed, 2) those in feeding aggregations (fronts) at the edge of the kelp bed, and 3) those on barren grounds. These subpopulations differ in density, spatial distribution, size/age structure, and nutritional status. The reproductive cycle is synchronous in all three subpopulations, however gonad indices are highest in the kelp habitat, intermediate in the feeding fronts and lowest on barren grounds. Gut content analysis indicates that differences among subpopulations and between years are related to variation in food supply, particularly the availability of drift algae. DESCRIPTORS: reproductive-behaviour; marine-invertebrates; kelps-; spatial-variations; temporal-variations; food-availability; reproductive-cycle; Strongylocentrotus-droebachiensis; Echinodermata- CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9524504 ACCESSION NUMBER: 3809887 UPDATE CODE: 9603 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 92 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Destructive grazing, epiphyte invasions and the dynamics of kelp beds off Nova Scotia AUTHOR(S): Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, NS B3H 4J1, Canada CONFERENCE INFORMATION: 23. Benthic Ecology Meeting, New Brunswick, NJ (USA), 17-19 Mar 1995 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-THIRD-BENTHIC-ECOLOGY-MEETING. Grassle,-J.P.;Kelsey,-A.;Oates, -E.;Snelgrove,-P.V.-eds. Rutgers-the-State-Univ.,-New-Brunswick,-NJ-USA. -Inst.-Marine-Coastal-Sciences 1995 vp NOTES: Abstract only. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The rocky subtidal ecosystem off Nova Scotia is in a state of transition. Expanding populations of the sea urchin Strongylocentrotus droebachiensis are destructively grazing kelp beds and creating urchin-dominated barren grounds. We are monitoring the transition at two sites, one sheltered and the other exposed to wave action, in relation to various factors which influence sea urchin abundance and grazing rate, including: predators, disease, availability of drift algae, and temperature. In addition to destructive grazing, there have been massive losses of kelp biomass due to an infestation of an epiphytic bryozoan Membranipora membranacea. An understanding of the interaction of processes which regulate the rate of kelp destruction is critical to the development of predictive models of community dynamics. DESCRIPTORS: marine-invertebrates; kelps-; grazing-; epiphytes-; ecological-crisis; Bryozoa-; Membranipora-membranacea; Echinodermata-; Strongylocentrotus -droebachiensis; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9524544 ACCESSION NUMBER: 3809854 UPDATE CODE: 9603 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 93 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Induction of metamorphosis of larvae of the green sea urchin, Strongylocentrotus droebachiensis, by coralline red algae AUTHOR(S): Pearce,-C.M.; Scheibling,-R.E. AUTHOR AFFILIATION: GIROQ, Dep. Biol., Univ. Laval, Ste. Foy, PQ G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): BIOL.-BULL.-MAR.-BIOL.-LAB.-WOODS-HOLE 1990 vol. 179, no. 3, pp. 304-311 INTERNATIONAL STANDARD NUMBERS: ISSN 0006-3185 PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The coralline red algae, Lithothamnion glaciale, Phymatolithon laevigatum, P. rugulosum, and Corallina officinalis, induced >85% of laboratory-reared larvae of Strongylocentrotus droebachiensis to metamorphose. Larvae must contact live L. glaciale or its spores for metamorphosis to occur; the inducer is not sensed in the water column. However, aqueous extracts of L. glaciale can induce metamorphosis, suggesting that the inducing factor is chemical. Neither ashed nor boiled L. glaciale induces metamorphosis, indicating that the factor is heat-labile and that thigmotaxis, per se, is not important in the response. The amino-acid, gamma -aminobutyric acid (GABA), which induces settlement of other marine invertebrate larvae, also induces significant rates of metamorphosis of S. droebachiensis at concentrations greater than or equal to 10 super(-4) M. A reduction (with antibiotics) in the number of live bacteria on the surface of L. glaciale does not affect the rate of metamorphosis of larvae. (DBO) DESCRIPTORS: larval-settlement; metamorphosis-; invertebrate-larvae; chemical-stimuli; chemotropism-; algae-; Strongylocentrotus-droebachiensis; Lithothamnion -glaciale; Phymatolithon-laevigatum; Phymatolithon-rugulosum; Corallina -officialis; Echinodermata- CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9512555 ACCESSION NUMBER: 3807920 UPDATE CODE: 9603 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2046829 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=21371 -- LIB HAS: Feb.1994- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Fish-Ocean Stacks -- Call number: 570.5 BB - - LIB HAS: v.86- (1944-) -- Latest issues on Display Location: FriHarbor Periodicals -- Shelved by title: Biological Bulletin -- Call number: 570.5 BB -- LIB HAS: v.32-41, 43- (1917-) Location: NatSci Periodicals -- Call number: 570.5 BB -- LIB HAS: v.1- (1899-) -- LATEST ISSUES ON DISPLAY Location: Tacoma Microforms -- Call number: Microfilm TAC-423 - - LIB HAS: v.178-195 (1990-1998) Location: Tacoma Periodicals -- Call number: QH301 .B38 -- LIB HAS: v.196 no.2- (Apr. 1999-) Record 94 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Occurrence of interspecific cross-fertilization among echinoderms and mollusks AUTHOR(S): Hamel,-J.-F.; Mercier,-A. AUTHOR AFFILIATION: Dep. Oceanogr., Univ. Quebec a Rimouski, Cent. Oceanogr., 310 allee des Ursulines, Rimouski, PQ G5L 3A1, Canada SOURCE (BIBLIOGRAPHIC CITATION): INVERTEBR.-REPROD.-DEV. 1994 vol. 26, no. 3, pp. 221-228 INTERNATIONAL STANDARD NUMBERS: ISSN 0168-8170 PUBLICATION YEAR: 1994 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Cross-fertilization experiments were conducted using two species of asteroids, one echinoid, one holothuroid and two species of mollusks to determine whether gametes from members of different classes, and even different phyla, are naturally able to fertilize one another. All but one of the crosses were successful, showing variable success, 58-99% lower than for intraspecific fertilization. Although most were not viable and showed anarchic cleavage, some resulting embryos could be reared to the blastula stage. Furthermore, these experiments led to the first case of intergeneric hybridization among asteroids, resulting in viable post -metamorphic sea stars. The hybrids of Leptasterias polaris (spermatozoa) and Asterias vulgaris (oocytes) showed a developmental kinetic, a survival rate and an external phenotype similar to those observed after normal intraspecific fertilization in A. vulgaris. In natural conditions a temporal barrier appears to be the key in preventing such hybridization, as these two sympatric species of sea stars, commonly found in the coastal water of eastern Canada, have distinct breeding seasons. However, other members of the echinoderms and mollusks among which cross-fertilization occurred are known to spawn during the same period, increasing possible wastage of gametes due to non-specific interactions. A potential chemical control of hybridization was present in a diffusible compound originating from the mature oocytes of A. vulgaris. This reduced the motility of heterospecific spermatozoa, especially those of Strongylocentrotus droebachiensis which were immobilized within 12 s in the vicinity of an oocyte. DESCRIPTORS: biological-fertilization; hybridization-; sexual-cells; Echinodermata-; Mollusca-; marine-mollusks; marine-invertebrates; ANW,-Canada; interspecific-relationships; Asterias-vulgaris; Leptasterias-polaris; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483; Malacology:-Reproduction-and-development-1264; Invertebrate -Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: MB9500329 ACCESSION NUMBER: 3753119 UPDATE CODE: 9509 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2064372 Location: FriHarbor Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984 -1988) Location: NatSci Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984-1988) Record 95 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Induction of metamorphosis of larval echinoids (Strongylocentrotus droebachiensis and Echinarachnius parma) by potassium chloride (KCl) AUTHOR(S): Pearce,-C.M.; Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, NS B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): INVERTEBR.-REPROD.-DEV. 1994 vol. 26, no. 3, pp. 213-220 INTERNATIONAL STANDARD NUMBERS: ISSN 0168-8170 PUBLICATION YEAR: 1994 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Potassium chloride (KCl) added to filtered seawater induced larval metamorphosis of the regular urchin Strongylocentrotus droebachiensis and the irregular urchin Echinarachnius parma in the absence of any other stimulatory substance, although the sensitivities of these two species differed. Larvae of S. droebachiensis were not affected by concentrations below 80 mM (above normal seawater levels), whereas 10 mM was enough to induce significantly more larvae of E. parma to metamorphose than a filtered seawater control (used to assess spontaneous metamorphosis in the absence of any inductive cue). Relatively high concentrations of KCl (i.e., above 60 mM), which did not appear to adversely affect larvae of S. droebachiensis, were toxic to larvae of E. parma. Presently, some 15 species of marine invertebrates (representing five different phyla) have larvae which are known to react (i.e., settle, attach, or metamorphose) in response to elevated K super(+) (KCl) levels. K super(+) (KCl), which is thought to induce larval metamorphosis via depolarization of externally accessible cells (Baloun and Morse, 1984), appears to be fairly non species-specific as a metamorphic inducer. DESCRIPTORS: invertebrate-larvae; metamorphosis-; larval-settlement; potassium -compounds; Strongylocentrotus-droebachiensis; Echinarachnius-parma; chemical-stimuli; controlled-conditions CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: MB9500328 ACCESSION NUMBER: 3749370 UPDATE CODE: 9509 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2064372 Location: FriHarbor Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984 -1988) Location: NatSci Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984-1988) Record 96 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The distribution and density of green sea urchin (Strongylocentrotus droebachiensis) in Icelandic waters AUTHOR(S): Einarsson,-S.T. AUTHOR AFFILIATION: Mar. Res. Inst., Skulagata 4, P.O. Box 1390, 121 Reykjavik, Iceland CORPORATE AUTHOR(S): International Counc. for the Exploration of the Sea, Copenhagen (Denmark). Shellfish Comm. CONFERENCE INFORMATION: Counc. Meet. of the Int. Counc. for the Exploration of the Sea, St. John's (Canada), 22-30 Sep 1994 SOURCE (BIBLIOGRAPHIC CITATION): COPENHAGEN-DENMARK ICES 1994 20 pp. SERIES TITLE/INFORMATION: ICES-COUNCIL-MEETING-PAPERS REPORT/PATENT NUMBERS: ICES-CM-1994/K:38 (ICESCM1994K38) PUBLICATION YEAR: 1994 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: During the last decade several attempts have been made to map the distribution and density of green sea urchin (Strongylocentrotus droebachiensis) in Icelandic waters. At first it was a by-catch in scallop fishery, later catches by divers. The last two years the sea urchin fishery has been almost entirely a dredgefishery and the annual catch is now about 800 metric tons. This paper describes the results obtained during several inshore surveys around Iceland carried out on green sea urchin. Also it shows the distribution of the species in the survey area and catch per dredging time as measure of its density. DESCRIPTORS: by-catch; population-density; dredging-; length-weight-relationships; sex -ratio; temperature-data; Strongylocentrotus-droebachiensis; ANE,-Iceland CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: BF9500866 ACCESSION NUMBER: 3733271 UPDATE CODE: 9509 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 97 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Rapid succession in subtidal understorey seaweeds during recovery from overgrazing by sea urchins in eastern Canada AUTHOR(S): Johnson,-C.R.; Mann,-K.H. AUTHOR AFFILIATION: Dep. Zool., Univ. Queensland, St Lucia, Qld., Australia 4072 SOURCE (BIBLIOGRAPHIC CITATION): BOT.-MAR. 1993 vol. 36, no. 1, pp. 63-77 INTERNATIONAL STANDARD NUMBERS: ISSN 0006-8055 PUBLICATION YEAR: 1993 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Cover and biomass of understorey seaweeds were followed over two growing seasons at 10 m depth at two sites in St Margaret's Bay in eastern Canada during a period of recovery from destructive grazing by sea urchins. At one site a complete canopy of the kelp Laminaria longicruris de la Pylaie had been re-established while at the other there was none. Recolonization by understorey species was rapid. Moreover, the same understorey species occurred at both sites in both years and there was no evidence of a seral replacement of macroalgal species in the development of these communities. Thus, in the first growing season after major disturbances, succession can proceed rapidly from microalgae to a community of macroalgae that is similar in structure to long standing pre-disturbance assemblages. There were consistent broad scale trends in seasonal abundances but there was also considerable variation in the quantitative abundances of many species among years within sites and among sites within years. An experimental introduction of sea urchins within an enclosed area led to the elimination of understorey species within 3 months. When this population of urchins began to decline as a result of infection with a paramoeboid pathogen, macroalgae began to recolonize even while urchins were still present and grazing actively, so that diversity and cover of seaweeds had recovered to ca. two-thirds of that of ungrazed controls by the time the urchin population reached zero. There was no evidence that the grazing of high densities of limpets [Notoacmaea testudinalis (Linnaeus)] and chitons [Tonicella rubra (Linnaeus)] limited macroalgal growth. DESCRIPTORS: ecological-succession; plant-populations; seaweeds-; herbivores-; ANW, -Canada; ecosystem-disturbance; ecosystem-resilience; Strongylocentrotus -droebachiensis; pathogens-; algae-; Canada-; grazing-; succession-; Laminaria-longicruris; ecosystem-dynamics; Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483; Botany:-General-1221; Invertebrate-Biology:-General: -General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9509297 ACCESSION NUMBER: 3725486 UPDATE CODE: 9506 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://www.deGruyter.com/journals/bm See records of latest issues received http://catalog.lib.washington.edu/record=b2013513 Location: Available Online Location: Fish-Ocean Stacks -- Call number: 581.9205 BO -- LIB HAS: v.1- (1959-) -- LATEST ISSUES IN: DISPLAY; Some vols. listed separately Location: FriHarbor Periodicals -- Shelved by title: Botanica Marina -- Call number: 581.9205 BO -- LIB HAS: v.1- (1959-) -- Some vols. listed separately Location: NatSci Periodicals -- Call number: QK564 .B66 -- LIB HAS: v. 2-23 (1960-1980) -- Some vols. listed separately Record 98 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The effects of depth, water flow and diet on settlement, recruitment and growth of the green sea urchin Strongylocentrotus droebachiesis AUTHOR(S): Harris,-L.G. AUTHOR AFFILIATION: Zool. Dep., Univ. New Hampshire, Durham, NH 03824, USA CONFERENCE INFORMATION: 23. Benthic Ecology Meeting, New Brunswick, NJ (USA), 17-19 Mar 1995 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-THIRD-BENTHIC-ECOLOGY-MEETING. Grassle,-J.P.;Kelsey,-A.;Oates, -E.;Snelgrove,-P.V.-eds. Rutgers-the-State-Univ.,-New-Brunswick,-NJ-USA. -Inst.-Marine-Coastal-Sciences 1995 vp NOTES: Abstract only. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Studies of early benthic phase populations of the green sea urchin S. droebachiensis in the southern Gulf of Maine have demonstrated consistent patterns of settlement over a 12 year period, but much variation in recruitment and growth. Settlement density decreases with increasing depth and also is reduced in areas of low water exchange. Given comparable water flow, settlement is lower in kelp bed habitats than in nearby urchin dominated barren grounds. Experiments are described to test the hypothesis that differences in settlement density are related to larval supply due to net flow at a site. Additional experiments will address the potential role of the physical structure of a kelp as a larval filter. Experimental design and the implications of these hypotheses for recruitment patterns are discussed. DESCRIPTORS: biological-settlement; recruitment-; population-dynamics; habitat -selection; hydrodynamics-; kelps-; marine-invertebrates; Echinodermata-; Strongylocentrotus-droebachiensis; ANW,-USA,-Maine-Gulf CLASSIFICATIONS: Population-Studies:-Population-dynamics-1442 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9512222 ACCESSION NUMBER: 3724264 UPDATE CODE: 9506 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 99 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Effects of local and distant contaminant sources: Polychlorinated biphenyls and other organochlorines in bottom-dwelling animals from an Arctic estuary AUTHOR(S): Bright,-D.A.; Dushenko,-W.T.; Grundy,-S.L.; Reimer,-K.J. AUTHOR AFFILIATION: Environ. Sci. Group, R. Roads Military Coll., FMO, Victoria, BC V0S 1B0, Canada CONFERENCE INFORMATION: International Symposium on the Ecological Effects of Arctic Airborne Contaminants, Reykjavik (Iceland), 4-8 Oct 1993 SOURCE (BIBLIOGRAPHIC CITATION): ECOLOGICAL-EFFECTS-OF-ARCTIC-AIRBORNE-CONTAMINANTS. Landers,-D.H.;Christie, -S.J.-eds. vol. 160-161 pp. 265-283 INTERNATIONAL STANDARD NUMBERS: ISSN 0048-9697 SERIES TITLE/INFORMATION: SCI.-TOTAL-ENVIRON. 1995 vol. 160-161 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: B (Brackish) ABSTRACT: Elevated concentrations of organochlorines in the tissues of large marine predators in the Canadian Arctic are well documented. This paper presents some of the first data on the composition and distribution of chlorinated organic compounds in some arctic coastal animals found at lower levels of the marine food chain. Organisms include bottom-dwelling invertebrates: clams (Mya truncata), mussels (Mytilus edulis), sea urchins (Strongylocentrotus droebachiensis) and fish: sculpins (Myoxocephalus quadricornis). The majority of samples were collected in the vicinity of Cambridge Bay, Northwest Territories (NWT), Canada; however, samples were also collected near another inhabited area (Hall Beach, NWT) and at a reference site (Wellington Bay, NWT). PCBs and other organochlorines typically originate in more industrialized parts of the northern hemisphere, enter the Arctic, and are subsequently biomagnified. In this study, differences in the PCB congener compositions and concentrations, as well as the relative concentrations of a larger suite of organochlorines in biota, allowed the discrimination between local and distant PCB sources. Terrestrial runoff from southern Victoria Island, NWT, has resulted in localized elevation of PCBs and chlorinated pesticides in marine sediment and bottom-dwelling animals. The major inputs of PCBs to coastal waters within Cambridge Bay were derived from local sources (the hamlet dump and DEW Line site). In addition, transport from more distant sources via riverine input accounts for locally elevated concentrations of other organochlorines in upper Cambridge Bay. This process may also account for concentrations of all measured organochlorines that are higher in Wellington Bay than in Queen Maud Gulf. The high PCB concentrations in the whole tissue (excluding liver) or livers of four-horned sculpins in Cambridge Bay (up to 220 ng/g and 1950 ng/g, respectively) and, to a lesser extent, Wellington Bay (3.8 ng/g and 47 ng/g, respectively) reflect a strong tendency for biomagnification of PCBs in coastal benthic communities. DESCRIPTORS: PCB-compounds; organochlorine-compounds; animals-; marine-organisms; estuaries-; Arctic-; polar-environments; Mya-truncata; Mytilus-edulis; Strongylocentrotus-droebachiensis; Myoxocephalus-quadricornis; Canada, -Northwest-Terr.; coastal-water; pollution-monitoring; polychlorinated -biphenyls; aquatic-animals; biomagnification-; marine-sediments; benthic -environment; water-pollution; PNW,-Canada,-Northwest-Terr.; brackishwater -pollution; PCB-; zoobenthos-; chlorinated-hydrocarbons; bioaccumulation-; Canada,-Northwest-Territories; coastal-waters CLASSIFICATIONS: Pollution:-Effects-on-organisms-1504 JOURNAL ANNOUNCEMENT: ASFA-3:-Aquatic-Pollution-and-Environmental-Quality (Q5) OCEAN ZONES: Polar-Arctic-Westward (PNW) INPUT CENTER NUMBER: CS9508126 ACCESSION NUMBER: 3719466 UPDATE CODE: 9506 LIBRARY HOLDINGS MESSAGE: Connect to the latest 9 months of this title online; UW restricted; http://www.sciencedirect.com/web -editions?_ob=JournalURL&_cdi=5836&_auth=y&_acct=C000021514&_version=1&_urlVersion=0&_userid=450576&md5=ee2ab56500e58cc322b2a5f95a3a3b10&sb=y See records of latest issues received http://catalog.lib.washington.edu/record=b2028899 Location: Available Online Location: Engr Periodicals-Floor 2 -- Shelved by title: Science of the total environment -- Call number: TA170 .S32 -- LIB HAS: v.1- (1972-) -- LATEST ISSUES ON DISPLAY Location: NatSci Periodicals -- Call number: TA170 .S32 -- LIB HAS: v.1-25, no.2 (1972-Oct. 1982) Record 100 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Cascading effects of size-selective predation by urchin harvesters: Is it the size or the number that really counts? AUTHOR(S): McNaught,-D.C.; Steneck,-R.; Zimsen,-S.R.M. AUTHOR AFFILIATION: Univ. Maine, Dep. Oceanogr., Darling Mar. Cent., Walpole, ME 04573, USA CONFERENCE INFORMATION: 23. Benthic Ecology Meeting, New Brunswick, NJ (USA), 17-19 Mar 1995 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-THIRD-BENTHIC-ECOLOGY-MEETING. Grassle,-J.P.;Kelsey,-A.;Oates, -E.;Snelgrove,-P.V.-eds. Rutgers-the-State-Univ.,-New-Brunswick,-NJ-USA. -Inst.-Marine-Coastal-Sciences 1995 vp NOTES: Abstract only. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: As the dominant hard-substrate herbivore in the Gulf of Maine, the green sea urchin, Strongylocentrotus droebachiensis, is likely to alter the community through herbivory. Indeed, with meteoric increases in harvesting since 1986, herbivory (measured via a kelp herbivory bioassay) has decreased coincident with a series of community changes. The macroalgal zone now extends deeper than it did in pre-harvesting times with fleshy macroalgae (e.g. Laminaria spp.) now occurring at depths once only occupied by crustose corallines. There has also been a shift in lobster shelter preferences from boulders to the more abundant kelp. Is the decrease in herbivory and its cascading effects the result of a loss in urchin densities or a decrease in average urchin size? Looking at two sites over time, average urchin size has decreased significantly at both, while densities have not decreased at all depth zones. We therefore conclude that major community state changes can occur without changes in herbivore population density if there is a loss of the largest and most deeply-grazing members of the population. DESCRIPTORS: marine-invertebrates; grazing-; echinoderm-fisheries; ecological -succession; population-density; marine-ecology; kelps-; Echinoidea-; Strongylocentrotus-droebachiensis; Laminaria-; ANW,-USA,-Maine-Gulf IDENTIFIERS: size-selective-harvesting CLASSIFICATIONS: Aquatic-Communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9509906 ACCESSION NUMBER: 3711848 UPDATE CODE: 9506 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 101 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Behavior and distribution of the green sea urchin in the sublittoral fringe and the rocky intertidal AUTHOR(S): Dumas,-J. AUTHOR AFFILIATION: Drexel Univ., Dep. Biosci. and Biotechnol., Philadelphia, PA 19104, USA CONFERENCE INFORMATION: 23. Benthic Ecology Meeting, New Brunswick, NJ (USA), 17-19 Mar 1995 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-THIRD-BENTHIC-ECOLOGY-MEETING. Grassle,-J.P.;Kelsey,-A.;Oates, -E.;Snelgrove,-P.V.-eds. Rutgers-the-State-Univ.,-New-Brunswick,-NJ-USA. -Inst.-Marine-Coastal-Sciences 1995 vp NOTES: Abstract only. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Movement of adult green sea urchins (Strongylocentrotus droebachiensis) between the fringe and low intertidal pools was investigated. Urchins were marked individually and followed for up to a week; urchins residing in low pools were removed and returned individuals were counted; the vertical distribution of urchins from the shallow subtidal up to the barnacle zone was quantified during daytime and nighttime low and high tides. Most tagged urchins stayed put, but several fringe urchins moved up into low pools. Net immigration to pools where urchins had been removed averaged 0.3 urchins/m2/month; none of the pools recovered to their original capacity after a year. Urchin abundance was highest in the shallow subtidal and fringe, but dropped of markedly as height on the shore increased, regardless of when measurements were taken. These data indicate that there is not a large flux of individuals between the subtidal and intertidal. DESCRIPTORS: marine-invertebrates; ecological-distribution; local-movements; littoral -zone; Echinoidea-; Strongylocentrotus-droebachiensis; ecological-zonation CLASSIFICATIONS: Autecology:-Migrations-and-rhythms-1421 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9509904 ACCESSION NUMBER: 3711642 UPDATE CODE: 9506 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 102 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Molecular variation of sperm "binding" in sympatric sea urchins AUTHOR(S): Biermann,-Ch. AUTHOR AFFILIATION: Dep. Ecol. and Evol., SUNY, Stony Brook, NY 11794-5245, USA CONFERENCE INFORMATION: 23. Benthic Ecology Meeting, New Brunswick, NJ (USA), 17-19 Mar 1995 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-THIRD-BENTHIC-ECOLOGY-MEETING. Grassle,-J.P.;Kelsey,-A.;Oates, -E.;Snelgrove,-P.V.-eds. Rutgers-the-State-Univ.,-New-Brunswick,-NJ-USA. -Inst.-Marine-Coastal-Sciences 1995 vp NOTES: Abstract only. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The free-spawning echinoids Strongylocentrotus droebachiensis and S. pallidus co-occur throughout northern high latitudes and they may hybridize asymmetrically. This study examines sequence evolution in the gene for sperm bindin, which mediates species-specific fertilization. Partly through length mutations and intragenic recombination, bindin differentiates rapidly within and between species. S. pallidus, a dee -water species, is highly polymorphic and has distinct groups of bindin alleles. S. droebachiensis-populations may be less stable and are genetically more uniform around North America but differ between the Western and Eastern Atlantic Ocean. High variability of gamete recognition molecules may influence our understanding of the evolution of reproductive barriers (i.e. speciation) in widely dispersing free-spawners. DESCRIPTORS: sympatric-populations; hybridization-; sperm-; biological-fertilization; Echinoidea-; Strongylocentrotus-droebachiensis; Strongylocentrotus -pallidus; marine-invertebrates; genes-; ANE-; ANW- IDENTIFIERS: sperm-binding; bindin- CLASSIFICATIONS: Population-Studies:-Population-genetics-1443 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE); Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9509864 ACCESSION NUMBER: 3711529 UPDATE CODE: 9506 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 103 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The effects of temperature on the fertilization of Strongylocentrotus droebachiensis AUTHOR(S): Davenport,-E. AUTHOR AFFILIATION: Dep. Nat. Sci., Univ. Maryland Eastern Shore, Princess Anne, MD 21853, USA CONFERENCE INFORMATION: 23. Benthic Ecology Meeting, New Brunswick, NJ (USA), 17-19 Mar 1995 SOURCE (BIBLIOGRAPHIC CITATION): TWENTY-THIRD-BENTHIC-ECOLOGY-MEETING. Grassle,-J.P.;Kelsey,-A.;Oates, -E.;Snelgrove,-P.V.-eds. Rutgers-the-State-Univ.,-New-Brunswick,-NJ-USA. -Inst.-Marine-Coastal-Sciences 1995 vp NOTES: Abstract only. PUBLICATION YEAR: 1995 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The green sea urchin, S. droebachiensis is a free-spawning benthic invertebrate whose spawning period ranges from January through April, when the waters are 7-8 degree C. This experiment was performed in an attempt to understand the effects of temperature on sperm longevity and percent fertilization in S. droebachiensis. Eggs and sperm from experimental sea urchins were collected into scintillation vials and incubated at 7 degree C, 10 degree C, or 13 degree C. After on hour, 1 ml of the incubated sperm dilutions were injected into egg dilutions held at established experimental temperatures. This procedure was repeated every half hour for four hours. Results indicate a high percent fertilization rate at 7 degree C and a decrease in fertilization as temperature increased. Sperm tended to have a higher life span in the lower temperature, which decreased with increasing temperature over the four hour experimental period. The implications for sperm survival at various temperatures are discussed relative to my experimental results. DESCRIPTORS: marine-invertebrates; temperature-effects; spawning-seasons; biological -fertilization; sperm-; survival-; strongylocentrotus-droebachiensis; Echinoidea- CLASSIFICATIONS: Autecology:-Environmental-effects-1422 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9507548 ACCESSION NUMBER: 3696068 UPDATE CODE: 9506 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 104 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Histopathology of the disease causing mass mortality of sea urchins (Strongylocentrotus droebachiensis) in Nova Scotia AUTHOR(S): Jones,-G.M.; Hebda,-A.J.; Scheibling,-R.E.; Miller,-R.J. AUTHOR AFFILIATION: SEATECH Ltd., P.O. Box 2161, Station M, Halifax, NS B3J 3C4, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-INVERTEBR.-PATHOL. 1985 vol. 45, no. 3, pp. 260-271 PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The disease causing mass mortalities of Strongylocentrotus droebachiensis off Nova Scotia, Canada, from 1980 to 1983 is described. Diseased urchins were characterized by loss of peripheral muscle function in tube feet, spines, and mouth. Signs occurred primarily in the body wall and associated tissues (water vascular system, nerves, spine bases) and coelomic fluid. These symptoms were diffuse and included a general infiltration of tissues with amoebocytes. The coelomic fluid often contained reduced numbers of red and white spherule cells, and clotting was incomplete. Progressive breakdown and fragmentation of muscle cells in tube feet and spine bases resulted in destruction of coherent muscle layers and their replacement by numerous spindle-shaped fibrillar muscle remnants. Coelomic lining cells in the tube feet sloughed off into the lumen, but remained in clumps and phagocytosed muscle remnants. (DBO) DESCRIPTORS: histopathology-; mortality-causes; disease-transmission; muscles-; body -walls; Strongylocentrotus-droebachiensis; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9422652 ACCESSION NUMBER: 3657845 UPDATE CODE: 9503 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 105 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Toxic effects of hydroxylated aromatic hydrocarbons on marine embryos AUTHOR(S): Falk-Petersen,-I.-B.; Kjorsvik,-E.; Lonning,-S.; Moller-Naley,-A.; Sydnes, -L.K. AUTHOR AFFILIATION: Inst. Biol. Geol., P.O. Box 3085, Univ. Tromsoe, N-9001 Tromsoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): SARSIA 1985 vol. 70, no. 1, pp. 11-16 PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Phenol and methyl-substituted phenols were acutely toxic towards sea-urchin Strongylocentrotus droebachiensis and fish Gadus morhua eggs in concentrations of 3-30 ppm. Naphthols were considerably more toxic than phenols, killing most embryos even in concentrations of 0.3-3 ppm. Sublethal concentrations of phenols and naphthols caused pigment defects in cod larvae. (DBO) DESCRIPTORS: aromatic-hydrocarbons; phenols-; toxicity-tests; Strongylocentrotus -droebachiensis; Gadus-morhua; eggs-; embryonic-development CLASSIFICATIONS: Pollution:-Effects-on-organisms-1504 JOURNAL ANNOUNCEMENT: ASFA-3:-Aquatic-Pollution-and-Environmental-Quality (Q5) INPUT CENTER NUMBER: CS9418359 ACCESSION NUMBER: 3652058 UPDATE CODE: 9503 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 106 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Sea otter, Enhydra lutris, prey composition and foraging success in the northern Kodiak Archipelago AUTHOR(S): Doroff,-A.M.; DeGange,-A.R. AUTHOR AFFILIATION: U.S. Fish and Wildl. Serv., Mar. Mamm. Manage. 1011 E. Tudor Rd., Anchorage, AK 99503, USA SOURCE (BIBLIOGRAPHIC CITATION): FISH.-BULL. 1994 vol. 92, no. 4, pp. 704-710 INTERNATIONAL STANDARD NUMBERS: ISSN 0090-0656 PUBLICATION YEAR: 1994 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: During 1987 and 1988, sea otter, Enhydra lutris, prey composition and foraging success were studied by observing foraging otters in the northern Kodiak Archipelago. Study areas differed in the number of years in which they were occupied by sea otters and were categorized as established (occupied >25 years), intermediate (occupied 5-15 years), and frontal (occupied <5 years). Clams were the most frequently identified sea otter prey (57-67%) in all study areas, and of the clams identified to species, Saxidomus giganteus was the most frequently observed. Mussels, Mytilus spp., crabs (primarily Telmessus spp.), and green sea urchins, Strongylocentrotus droebachiensis, contributed less than or equal to 25% to the total prey within each study area. Adults did not differ in the proportion of clams, mussels, or crabs captured as prey among study areas. Adults captured clams with a greater frequency and mussels with lesser frequency than did juvenile sea otters for all study areas combined. Forage success did not differ among study areas for adults nor between adults and juveniles for all study areas combined. Adult sea otters in the established area appear to have compensated for reduced prey size by retrieving more prey items per dive; however, they obtained less clam biomass per dive than otters in the intermediate and frontal areas. DESCRIPTORS: marine-mammals; predation-; prey-selection; community-composition; Enhydra -lutris; Saxidomus-giganteus; Mytilus-; Telmessus-; Strongylocentrotus -droebachiensis; INE,-USA,-Alaska,-Kodiak-I.; food-selection CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9420877 ACCESSION NUMBER: 3634459 LIBRARY HOLDINGS MESSAGE: Connect to this title online http://purl.access.gpo.gov/GPO/LPS6104 See records of latest issues received http://catalog.lib.washington.edu/record=b2022218 Location: Available Online Location: Engr Microforms-Floor 3 -- Call number: PB -- LIB HAS: v.95 no.1 (Jan. 1997) -- Filed by PB Number in PB Microfiche Cabinets Location: Fish-Ocean Stacks -- Call number: 597 Un3 -- LIB HAS: v. 68, no. 2- (1970-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Fishery bulletin -- Call number: 597 Un3 -- LIB HAS: v. 68, no. 2- (1970-) See records of latest issues received http://catalog.lib.washington.edu/record=b2050042 Location: Fish-Ocean Stacks -- Call number: 597 Un3 -- LIB HAS: v.50-68 no.1 (1941-1969) -- Some volumes listed separately Location: FriHarbor Periodicals -- Call number: 597 Un3 -- LIB HAS: v.50-68 no.1 (1941-1969) -- Some volumes listed separately Record 107 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Discrimination and distribution of the sea urchins Strongylocentrotus droebachiensis (O.F. Mueller) and S. pallidus (G.O. Sars) in the Northwest Atlantic AUTHOR(S): Gagnon,-J.-M.; Gilkinson,-K.D. AUTHOR AFFILIATION: Collect. Div., Canadian Mus. Nat., P.O. Box 3443, Station 'D', Ottawa ON K1P 6P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): SARSIA 1994 vol. 79, no. 1, pp. 1-11 INTERNATIONAL STANDARD NUMBERS: ISSN 0036-4827 PUBLICATION YEAR: 1994 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Previous inshore and offshore faunal surveys along the east coast of Newfoundland and Labrador, Canada, had indicated that the only strongylocentrotid sea urchin species in this region was Strongylocentrotus droebachiensis. Examination of sea urchins collected at depths ranging from 10 to 387 m revealed that, with a few exceptions classified as 'unknown', all specimens from 60 m and deeper are S. pallidus. The two species of sea urchins are distinguished on the basis of the shape of tridentate and globiferous pedicellariae, the colour of oral spines, the number of wedges on aboral primary spines and the number of ambulacral pore-pairs. Intraspecific variations among these characters can be substantial, particularly in S. droebachiensis. In the few instances where significant trends were found along the latitudinal and bathymetric gradients, these could be explained by the variation in specimens' body size alone. Nevertheless, univariate comparisons of these characters and their relationships (or lack thereof) with station latitude, water depth and body size support the widely held view that S. pallidus is not a colour variant of S. droebachiensis but a separate species. Multivariate analyses based on the five characters also support the recognition of two distinct species of Strongylocentrotus in the Northwest Atlantic. A revised identification key is proposed to better distinguish these two species. DESCRIPTORS: taxonomy-; animal-morphology; geographical-distribution; biological -surveys; strongylocentrotus-droebachiensis; strongylocentrotus-pallidus; ANW- CLASSIFICATIONS: Invertebrate-Biology:-General:-Taxonomy-and-morphology-1243 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9417144 ACCESSION NUMBER: 3626513 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2028695 Location: Fish-Ocean Stacks -- Call number: 591.9205 SA -- LIB HAS: no.1- (1961-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Sarsia -- Call number: 591.9205 SA -- LIB HAS: no.1- (1961-) Record 108 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Morphological differences between two closely related sea urchin species, Strongylocentrotus droebachiensis and S. pallidus, in northern Norway (Echinodermata, Echinoidea) AUTHOR(S): Vader,-W.; Pedersen,-B.S.H.; Loenning,-S. AUTHOR AFFILIATION: Tromsoe Mus., Univ. Tromsoe, N-9000 Tromsoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): FAUNA-NORVEG.,-SER.-A. 1986 vol. 7, no. 5, pp. 10-14 PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Using material from a mixed population in northern Norway, it is shown that the two sea urchin taxa Strongylocentrotus droebachiensis (O.F. Muller) and S. pallidus (G.O. Sars) are independent, although closely related species, that are fairly easy to tell apart also by morphological criteria. In this mixed population there is a significant difference in relative lantern size, with S. pallidus having much bigger lanterns. The difference is especially pronounced in large specimens.(DBO) DESCRIPTORS: comparative-studies; animal-morphology; sympatric-populations; Strongylocentrotus-droebachiensis; Strongylocentrotus-pallidus; ANE,-Norway CLASSIFICATIONS: Invertebrate-Biology:-General:-Taxonomy-and-morphology-1243 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: CS9405815 ACCESSION NUMBER: 3597650 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 109 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Experimental analysis of factors influencing the aggregating behaviour of the green sea urchin Strongylocentrotus droebachiensis (Mueller) AUTHOR(S): Hagen,-N.T.; Mann,-K.H. AUTHOR AFFILIATION: Dep. Fish. and Nat. Sci., Bodoe College, N-8002 Bodoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1994 vol. 176, no. 1, pp. 107-126 INTERNATIONAL STANDARD NUMBERS: ISSN 0022-0981 PUBLICATION YEAR: 1994 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The aggregating behaviour of the green sea urchin Strongylocentrotus droebachiensis was investigated in a multifactorial laboratory experiment. The null hypothesis of a random pattern of aggregation was rejected prior to analyses of treatment effects, and patterns of aggregation were quantified using three indices of aggregation: the mean aggregation size, the index of mean crowding, and the index of patchiness. Sea urchin density and body size were the two most important determinants of spatial pattern. Sea urchins, irrespective of size, had a regular pattern of aggregation at low density, a nearly random pattern at medium density, and a clumped pattern at high density. Large urchins were consistently more aggregated than small urchins, even though urchin size was involved in several interactions with other experimental factors. Averaged over all densities, large urchins had a clumped, while small urchins had a regular pattern of aggregation. The presence of decapod predators had no detectable effect on the aggregation behaviour of S. droebachiensis. Significant predator effects were entirely due to the presence of wolf -fish, which reduced the size of sea urchin aggregations both by eliciting behavioural responses, and by decreasing the population density of the urchins. Additional spatial heterogeneity, in the form of claypipe refuges, also made the urchins less aggregated. Prefeeding, food, and season had minor effects on the aggregating behaviour of S. droebachiensis. DESCRIPTORS: feeding-behavior; organism-aggregations; Strongylocentrotus-droebachiensis; social-behavior; body-size; population-density; aggregation-behavior CLASSIFICATIONS: Autecology:-Behavior-1423; Autecology:-Nutrition-and-feeding-habits-1425; Malacology:-General-1261 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9406753 ACCESSION NUMBER: 3553744 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/00220981 Connect to this title online; UW restricted http://www.elsevier.com/locate/jembe See records of latest issues received http://catalog.lib.washington.edu/record=b2008200 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Journal experimental marine biology ecology -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) Record 110 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Turbidity as a method of preparing sperm dilutions in the echinoid sperm/egg bioassay AUTHOR(S): Hall,-T.J.; Haley,-R.K.; Battan,-K.J. AUTHOR AFFILIATION: Natl. Counc. Paper Ind. Air and Stream Improv., 1900 Shannon Point Rd., Anacortes, WA 98221, USA SOURCE (BIBLIOGRAPHIC CITATION): ENVIRON.-TOXICOL.-CHEM. 1993 vol. 12, no. 11, pp. 2133-2137 INTERNATIONAL STANDARD NUMBERS: ISSN 0730-7268 PUBLICATION YEAR: 1993 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The use of a turbidimeter for preparing sperm dilutions used in the echinoid sperm/egg bioassay was evaluated. Regression analyses of the relationship between sperm density and turbidity for the sea urchins Strongylocentrotus purpuratus and Strongylocentrotus droebachiensis and the sand dollar Dendraster excentricus indicated that although there were slope differences for each species, each coefficient of determination was highly significant. For Dendraster excentricus, triplicate hemacytometer counts over a range of turbidities as well as repeated preparations of a single sperm turbidity indicated similar variability for each. The use of the turbidimeter has time-saving advantages over conventional hemacytometer methods without sacrificing precision. Sperm dilutions can be prepared rapidly (1-2 min), minimizing seawater sperm preactivation before test initiation, and may therefore contribute to increased test precision. DESCRIPTORS: bioassays-; methodology-; spermatozoa-; turbidity-; Strongylocentrotus -purpuratus; Strongylocentrotus-droebachiensis; Dendraster-excentricus; test-organisms; pollution-indicators; indicator-species; sperm-dilutions; turbidimeters-; river-discharge CLASSIFICATIONS: Biology:-General:-Methods-and-instruments-1182; Invertebrate-Biology: -General:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9406526 ACCESSION NUMBER: 3552885 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2059669 Location: Engr Periodicals-Floor 2 -- Shelved by title: Environmental toxicology and chemistry -- Call number: QH545.A1 E594 -- LIB HAS: v.1- (1982-) -- LATEST ISSUES ON DISPLAY Record 111 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Continuing studies of green urchin growth and recruitment near Kodiak, Alaska AUTHOR(S): Munk,-J.E.; MacIntosh,-R.A. AUTHOR AFFILIATION: NMFS, Alaska Fish. Sci. Cent., P.O. Box 1638, Kodiak, AK 99615, USA CONFERENCE INFORMATION: 85. Annu. Meet. Natl. Shellfisheries Association, Portland, OR (USA), 31 May-3 Jun 1993 SOURCE (BIBLIOGRAPHIC CITATION): J.-SHELLFISH-RES. 1993 vol. 12, no. 1, p. 145 INTERNATIONAL STANDARD NUMBERS: ISSN 0077-5711 NOTES: Abstract only. PUBLICATION YEAR: 1993 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The fishery for green sea urchins (Strongylocentrotus droebachiensis) around Kodiak island experiences annually fluctuating landings due primarily to the discovery and subsequent harvest of new beds. Past work suggests these urchins attain their full reproductive capacity (and yield) at approximately 50 mm test diameter and 3.5 years of age. A reduction in test growth rates at this size and age, however, limits the information gained from examining size-frequency distributions. Annual size-frequency monitoring of an urchin bed at Chiniak has shown a strong yearclass settled in 1990. This has been the only significant recruitment at this site in the past six years and has substantiated past estimates of size at age for juvenile urchins. Harvests here in 1989 and 1990 combined with poor recruitment for the previous 3 years has substantially reduced the frequency of large urchins. This may allow tracking of the '90 yearclass to a size larger than usual (50-55 mm) and provide needed information on the growth of older, slower growing urchins. DESCRIPTORS: recruitment-; growth-; sexual-reproduction; harvesting-; fishery -management; Strongylocentrotus-droebachiensis; INE,-USA,-Alaska,-Kodiak -I; depleted-stocks CLASSIFICATIONS: Fishable-stocks:-Stock-assessment-and-management-1604; Invertebrate -Biology:-General:-Reproduction-and-development-1244; Autecology:-Age-and -growth-1424 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CS9408430 ACCESSION NUMBER: 3545046 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2022341 Location: Fish-Ocean Reserve -- Call number: 639.406 N213p -- LIB HAS: v. 45-70, no. 2. (1954 -1980.) Location: MicNews -- Call number: Microcards -- LIB HAS: 1952 -1955, 1958-1960 See records of latest issues received http://catalog.lib.washington.edu/record=b2057706 Location: Fish-Ocean Stacks -- Call number: SH365.A1 J37 -- LIB HAS: v.1- (June 1981-); Latest issues on Display Record 112 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Characterization of a calsequestrin-like protein from sea-urchin eggs AUTHOR(S): Lebeche,-D.; Kaminer,-B. AUTHOR AFFILIATION: Dep. Physiol., Boston Univ. Sch. Med., Boston, 02118, USA SOURCE (BIBLIOGRAPHIC CITATION): BIOCHEM.-J. 1992 vol. 287, no. 3, pp. 741-747 INTERNATIONAL STANDARD NUMBERS: ISSN 0264-6021 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Following our studies on the identification of a calsequestrin-like protein (CSLP) from sea-urchin (Strongylocentrotus droebechiensis) eggs, we have characterized its Ca super(2+)-binding properties and identified it as a glycoprotein. The molecule binds 23 mol of Ca super(2+)/mol of protein, as determined by equilibrium dialysis. This is in the range reported for cardiac calsequestrin but is about half the binding capacity of striated muscle calsequestrin. The affinities of the CSLP for Ca super(2+) are decreased by increasing KCl concentrations (20-250 mM) and the presence of Mg super(2+) (3 mM) in the medium: the half-maximal binding values varied from 1.62 to 5.77 mM. Hill coefficients indicated mild co-operativity in the Ca super(2+) binding. Ca super(2+) (1-8 mM)-induced u.v. difference spectra and intrinsic fluorescence changes suggest a net exposure of aromatic residues to an aqueous environment. C.d. measurements showed minor Ca super(2+)-induced changes in alpha -helical and beta -sheet content of less than 10%. These spectral changes are distinctly different from those found in muscle calsequestrin. Immunoblotting studies showed that the CSLP is distinct from calreticulin, a low-affinity Ca super(2+) -binding protein. DESCRIPTORS: sexual-reproduction; eggs-; fecundity-; calcium-; proteins-; Strongylocentrotus-droebachiensis IDENTIFIERS: Calsequestrin- CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9405212 ACCESSION NUMBER: 3539861 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://www.biochemj.org/ See records of latest issues received http://catalog.lib.washington.edu/record=b2019797 Location: Available Online Location: FriHarbor Periodicals -- Call number: 612.015 BI -- LIB HAS: v.13, 35-130 (1919, 1941-1972) Location: Health Serials -- Shelved by title: Biochemical journal -- Call number: 612.015 BI -- LIB HAS: v.1(1906)-- -- Pre-1930 vols. in Basement Storage Location: NatSci Periodicals -- Call number: 612.015 BI -- LIB HAS: v.40-130 (1946 -1972) Record 113 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Reproduction and growth of green urchins Strongylocentrotus droebachiensis (Mueller) near Kodiak, Alaska AUTHOR(S): Munk,-J.E. AUTHOR AFFILIATION: NMFS, Resour. Assess. and Conserv. Eng. Div., Alaska Fish. Sci. Cent., P.O. Box 1638 Kodiak, AK 99615, USA SOURCE (BIBLIOGRAPHIC CITATION): J.-SHELLFISH-RES. 1992 vol. 11, no. 2, pp. 245-254 INTERNATIONAL STANDARD NUMBERS: ISSN 0077-5711 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The factors affecting gonad recovery and quality of green urchins (Strongylocentrotus droebachiensis) were investigated near Kodiak, Alaska, to aid a developing fishery. Seasonal monitoring of a gonad index and ripeness indicated a single spring spawning with variable timing and duration. Mean index values were highest from January through the spawning period with index values for females significantly higher (45%) than males during this period. Maximum recovery rates per individual could be obtained by restricting harvest to urchins 50 mm and larger. Sexual maturity was reached at either age 2 or 3 and size at 50% maturity was 25.2 mm. Growth was studied by tracking the progressive increase in size of modal groups observed in test diameter frequency distributions. Percent increase in test diameter between collections indicated that the majority of annual growth took place between March and September. Von Bertalanffy estimates of mean size at ages 1.0 through 4.0 were 9.9, 29.3, 44.0, and 55.1 mm. This growth rate is one of the highest reported for green urchins. The majority of a year class should reach fishable size ( greater than or equal to 50 mm) at age 3.5. DESCRIPTORS: echinoderm-fisheries; fishery-biology; reproduction-; growth-; size -distribution; Strongylocentrotus-droebachiensis; INE,-USA,-Alaska,-Kodiak -I. CLASSIFICATIONS: Invertebrate-Biology:-General:-General-1241 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: FA9301943 ACCESSION NUMBER: 3052639 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2022341 Location: Fish-Ocean Reserve -- Call number: 639.406 N213p -- LIB HAS: v. 45-70, no. 2. (1954 -1980.) Location: MicNews -- Call number: Microcards -- LIB HAS: 1952 -1955, 1958-1960 See records of latest issues received http://catalog.lib.washington.edu/record=b2057706 Location: Fish-Ocean Stacks -- Call number: SH365.A1 J37 -- LIB HAS: v.1- (June 1981-); Latest issues on Display Record 114 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Induction of metamorphosis of echinoid larvae AUTHOR(S): Gilmour,-T.H.J. AUTHOR AFFILIATION: Univ. Saskatchewan, Saskatoon, SK, Canada CONFERENCE INFORMATION: Annu. Meet. of the American Soc. of Zoology, American Microscopical Soc., Animal Behavior Soc., the Crustacean Soc., and the Int. Assoc. of Astacology, Atlanta, GA (USA), 27-29 Dec 1991 SOURCE (BIBLIOGRAPHIC CITATION): AM.-ZOOL. 1991 vol. 31, no. 5, p. 105A INTERNATIONAL STANDARD NUMBERS: ISSN 0003-1569 NOTES: Summary only. PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The effect of ammonia on the settlement and metamorphosis of Lytechinus pictus, L. variegatus Strongylocentrotus droebachiensis and Dendraster excentricus was studied. Adults were spawned with acetylcholine and fertilized eggs were reared in paddle jars containing sea water or Instant Ocean. The developing larvae were transferred to fresh medium with Isochrysis every other day. Competent larvae were treated with solutions of 1-10 ppm ammonia generated by the titration of ammonium chloride with sodium hydroxide. Ammonia concentrations were measured with a gas-sensing electrode. Supernatants from a strain of ammonia-producing bacteria also stimulated metamorphosis. Epinephrine bitartrate solutions which induced settlement when they were titrated with sodium hydroxide also produced ammonia. These results suggest that metamorphosis is induced by bacteria on suitable substrates. DESCRIPTORS: embryonic-development; metamorphosis-; ammonia-; larval-settlement; bacteria-; Lytechinus-; Strongylocentrotus-droebachiensis; Dendraster -excentricus CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9319267 ACCESSION NUMBER: 3037199 LIBRARY HOLDINGS MESSAGE: Connect to 2000+ issues of this title online; UW restricted; http://www.bioone.org/bioone/?request=get-journals-list&issn=0003-1569 See records of latest issues received http://catalog.lib.washington.edu/record=b1996110 Location: Available Online Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=27296 -- LIB HAS: Jan.1997- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: FriHarbor Periodicals -- Shelved by title: American Zoologist -- Call number: QL1 .A448 -- LIB HAS: v.1- (1961 -) Location: NatSci Periodicals -- Call number: QL1 .A448 -- LIB HAS: v.1- (1961-) -- LATEST ISSUES ON DISPLAY; LIBRARY USE ONLY Record 115 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Relation between escape behaviour of benthic marine invertebrates and the risk of predation. AUTHOR(S): Legault,-C.; Himmelman,-J.H. AUTHOR AFFILIATION: Dep. Biol. and GIROQ, Laval Univ., Quebec, PQ G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1993. vol. 170, no. 1, pp. 55-74 INTERNATIONAL STANDARD NUMBERS: ISSN 0022-0981 PUBLICATION YEAR: 1993 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Many prey species display defensive behaviours when they detect predators. We examine, for six benthic marine invertebrates with strong escape responses, the hypothesis that the intensity of escape responses increases with the risk of mortality from various predators. Data for the bivalves Serripes groenlandicus (Bruguiere), Clinocardium ciliatum (Fabricius), Chlamys islandica (Mueller), the gastropod Buccinum undatum L. and the holothuroid Cucumaria frondosa (Gunnerus), generally support the hypothesis. They respond strongly to their most important predator and weakly or not at all to unimportant ones. The strongest correlation between the intensity of the escape response and predation risk was for Buccinum undatum . This may be related to its lack of a pelagic larval phase, as this means that the parents of individuals studied were from the community where predation risk was estimated. Data for the echinoid Strongylocentrotus droebachiensis Mueller contradict the hypothesis. It responds strongly to Leptasterias polaris (Betzius), a seastar which rarely eats urchins, and does not respond significantly to its mean predator Crossaster papposus (L.). DESCRIPTORS: predation-; protective-behaviour; Asteroidea-; defence-mechanisms; marine -molluscs; Mollusca-; Cucumaria-frondosa; Invertebrata-; behavioural -responses; predators-; risks-; escape-behavior CLASSIFICATIONS: Autecology:-Behavior-1423; Productivity,-Ecosystems,-Species-Interactions: -Species-interactions:-General-1483 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9315487 ACCESSION NUMBER: 3003111 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/00220981 Connect to this title online; UW restricted http://www.elsevier.com/locate/jembe See records of latest issues received http://catalog.lib.washington.edu/record=b2008200 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Journal experimental marine biology ecology -- Call number: QH91.A1 J68 -- LIB HAS: v.1- (1967-) Record 116 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Environmental control of green sea urchin, Strongylocentrotus droebachiensis , spawning in the St. Lawrence Estuary. AUTHOR(S): Starr,-M.; Himmelman,-J.H.; Therriault,-J.-C. AUTHOR AFFILIATION: Inst. Maurice-Lamontagne, Minist. Peches Oceans, C.P. 1000, Mont-Joli, PQ G5H 3Z4, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-FISH.-AQUAT.-SCI. 1993. vol. 50, no. 5, pp. 894-901 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X NOTES: Incl. bibliogr.: 73 ref. PUBLICATION YEAR: 1993 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Environmental factors and spawning of the green sea urchin, Strongylocentrotus droebachiensis , were examined during 1983 and 1984 in the St. Lawrence Estuary. In both years, spawning occurred in June, which contrasts sharply with the February to early May spawnings reported for other locations. This difference does not appear to be related to temperature, but to the much delayed spring increase of phytoplankton in the estuary. In both 1983 and 1984, sea urchin spawning coincided with the first marked and sustained increase in phytoplankton abundance (chlorophyll a levels of 1-2 mg/m super(3) for > 3 d) which took place about 2 wk before the main spring blooms; this first increase coincided with a sharp increase in salinity resulting from a decrease in freshwater runoff. DESCRIPTORS: spawning-; environmental-factors; salinity-; river-discharge; algal-blooms; phytoplankton-; biomass-; Invertebrata-; Strongylocentrotus -droebachiensis; ANW,-Canada,-St.-Lawrence-Estuary CLASSIFICATIONS: Autecology:-Environmental-effects-1422 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CA9300505 ACCESSION NUMBER: 2961839 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 117 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Macroparasitic epizootic disease: A potential mechanism for the termination of sea urchin outbreaks in northern Norway?. AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Inst. Fish. and Aquacult., Nordland Coll., N-8002 Bodoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1992. vol. 114, no. 3, pp. 469-478 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Bibliogr.: 47 ref. PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Outbreak populations of the green sea urchin, Strongylocentrotus droebachiensis , in Vestfjorden, northern Norway, are infected by the endoparasitic nematode, Echinomermella matsi , 1987. The prevalence of E. matsi has increased from 5.5% in 1983 to 65.4% in 1991 at a study site in Godoeystraumen. Infected sea urchins had a lower mean gonad index than non -infected sea urchins, and two thirds of the infected sea urchins were reduced to virtual castrates of unknown sex. The mean density of the S. droebachiensis -population in Godoeystraumen appeared unchanged, but the mean test diameter had decreased by 14.6%, from 36.4 mm in 1983 to 31.1 mm in 1991. As a result of these changes the reproductive capacity of the sea urchin population appears to have been reduced by approximately 58%. The data analysis was augmented by the use of a PEPLOM (PErcentile PLOt Matrix), which appears to be a novel combination of two powerful methods of graphical data analysis, i.e., the percentile comparison graph and the scatterplot matrix (SPLOM). DESCRIPTORS: ecological-crisis; pest-control; population-density; parasitic-diseases; Echinomermella-masti; Strongylocentrotus-droebachiensis; ANE,-Norway, -Vestfjorden CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Pests-and-control-1485; Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases -1484; Environmental-Changes,-Conservation,-Public-Health:-Mechanical-and -natural-changes-1521 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1); ASFA --3:-Aquatic -Pollution-and-Environmental-Quality (Q5) OCEAN ZONES: Atlantic-Northeast (ANE) INPUT CENTER NUMBER: BF9300448 ACCESSION NUMBER: 2900459 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 118 of 241 in ASFA 1988-1996 TITLE (ENGLISH): How different are sand dollars? An examination of the oral-surface podia and sieve hypotheses in Dendraster excentricus . AUTHOR(S): Williams,-D.C. AUTHOR AFFILIATION: Western Washington Univ., Bellingham, WA 98225, USA CONFERENCE INFORMATION: 65. Annu. Meet., Northwest Science Association, Bellingham, WA (USA), 24-28 Mar 1992 SOURCE (BIBLIOGRAPHIC CITATION): NORTHWEST-SCI. 1992. vol. 66, no. 2, p. 113 NOTES: Abstract only. PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Oral and aboral surface hydrolases (amylase, cellulase and protease) were measured in the sand dollar (Dendraster excentricus ), seastar (Pisaster ochraceus ) and sea urchin (Strongylocentrotus droebachiensis ). Measurement provided no evidence for the uniqueness of the sand dollar oral and aboral surface in contributing to pre-ingestion digestive events of macro- or micronutrients. In addition, relative concentrations of the indicated digestive hydrolases were determined in the small and large intestines of the sand dollar. The small intestine is the site of major digestive hydrolase activity. DESCRIPTORS: comparative-studies; digestive-tract; enzymatic-activity; intestines-; Dendraster-excentricus; Pisaster-ochraceus; Strongylocentrotus -droebachiensis CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9301181 ACCESSION NUMBER: 2845302 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 119 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Isolation and properties of a substance from the diatom Phaeodactylum tricornutum which induces spawning in the sea urchin Strongylocentrotus droebachiensis . AUTHOR(S): Starr,-M.; Himmelman,-J.H.; Therriault,-J.-C. AUTHOR AFFILIATION: Inst. Maurice-Lamontagne, Div. d'Oceanogr. Biol., Minist. Peches et Oceans, C.P. 1000, Mont-Joli, PQ G5H 3Z4, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER. 1992. vol. 79, no. 3, pp. 275-287 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A substance extracted from the diatom Phaeodactylum tricornutum which triggers spawning was characterized, using spawning bioassays of sea urchin Strongylocentrotus droebachiensis to ascertain its presence. Of 14 extraction techniques applied to P. tricornutum cells, only alkaline hydrolysis with 1 N NaOH extracted the spawning inducer. Ethanol, distilled water, dilute HCl, aqueous Na sub(2)CO sub(3), chloroform/methanol (2:1, v/v), acetone, phosphate buffer, anhydrous ether and hexane did not extract the inducer from phytoplankton cells. Once extracted the spawning inducer has a molecular weight between 1200 and 3500 daltons, and is soluble in distilled water, partially soluble in ethanol and methanol and insoluble in chloroform. Only a slight loss in activity occurred over 16 d when the neutralized NaOH extract was refrigerated at 5 degree C in darkness. The spawning inducer in the acidified (pH 2.0) aqueous extract can be further extracted with anhydrous ether. After partial purification, this fraction contained a yellowish pigment(s) which strongly absorbed ultraviolet light and reacted with a mixture of equal volumes of 1% ferric chloride and 1% potassium ferricyanide, a characteristic of phenolic compounds. DESCRIPTORS: biotesting-; spawning-; chemical-stimuli; chemical-analysis; induced -breeding; controlled-conditions; synergism-; Phaeodactylum-tricornutum; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483; Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) INPUT CENTER NUMBER: BF9201586 ACCESSION NUMBER: 2843381 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 120 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The role of energy intake rate in prey and habitat selection of common eiders Somateria mollissima in winter: A risk-sensitive interpretation. AUTHOR(S): Guillemette,-M.; Ydenberg,-R.C.; Himmelman,-J.H. AUTHOR AFFILIATION: Dep. Biol., Univ. Quebec, 300 allee des Ursulines, Rimouski, PQ G5L 3A1, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-ANIM.-ECOL. 1992. vol. 61, no. 3, pp. 599-610 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: We measured prey selection and habitat profitability of common eiders Somateria mollissima L. wintering in the Gulf of St. Lawrence, Quebec, Canada. Prey selection was evaluated by comparing the frequency of prey in stomachs of shot eiders with their frequency in the sublittoral zone. Habitat profitability was estimated using information on time spent feeding, foraging success, diving durations and energy content of the prey. In this region, eiders forage on a variety of prey types from several distinct habitats, kelp beds, urchin barrens and beds of the phaeophyte Agarum cribrosum (Mert.). In kelp beds eiders feed mostly on small blue mussels Mytilus edulis L. Over barrens they capture green sea urchins Strongylocentrotus droebachiensis (Mueller), and over Agarum beds they feed on both spider crabs Hyas araneus (L.) and urchins. DESCRIPTORS: energy-intake; rates-; habitat-selection; winter-; risk-assessment; foraging-behavior; Somateria-mollissima; Canada,-St.-Lawrence-Gulf; food -consumption; food-organisms; bioenergetics-; prey-selection; ANW,-Canada, -St.-Lawrence-Gulf; marine-birds CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425; Ornithology:-General-1361 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9219938 ACCESSION NUMBER: 2835243 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 121 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The allometry of plate size and number in the sea urchin Strongylocentrotus drobachiensis . AUTHOR(S): McEachern,-P.; Telford,-M. AUTHOR AFFILIATION: Dep. Zool., Univ. Toronto, Toronto, Ont. M5S 1A1, Canada CONFERENCE INFORMATION: Friends of Echinoderms, N.A., Dauphin Island, AL (USA), 1-2 Jun 1989 SOURCE (BIBLIOGRAPHIC CITATION): NORTHEAST-GULF-SCI. 1990. vol. 11, no. 1, p. 81 NOTES: Abstract only. PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The following data have been obtained from a collection of sea urchins, Strongylocentrotus drobachiensis , from St. Andrews, New Brunswick: test diameter, height, dry weight, and ashed weight. The plates were then spread out flat, retaining their relative positions within columns, so that they could be counted. From each specimen, all of the plates from both columns in one ambulacrum and an adjacent interambulacrum were entered into a computer by means of a digitizing tablet. For this purpose, ambulacral plates were treated as rectangles, interambulacral plates as pentangles. The length (meridional) and width (circumferential) of each plate was computed. These data may be used to generate a computer model simulating echinoid growth. DESCRIPTORS: mathematical-models; growth-; body-size; Strongylocentrotus-droebachiensis; ANW,-Canada,-New-Brunswick,-St.-Andrews CLASSIFICATIONS: Invertebrate-Biology:-General:-Taxonomy-and-morphology-1243 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9218012 ACCESSION NUMBER: 2821004 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 122 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Feeding and digestion of prepared protein and carbohydrate rich diets by Strongylocentrotus droebachiensis (O.F. Muller) (Echinodermata: Echinoidea). AUTHOR(S): John,-D.A.; Mencken,-T.J.; Klinger,-T.S. AUTHOR AFFILIATION: Dep. Biol. and Allied Health Sci., Bloomsburg Univ., Bloomsburg, PA 17815, USA CONFERENCE INFORMATION: Friends of Echinoderms, N.A., Dauphin Island, AL (USA), 1-2 Jun 1989 SOURCE (BIBLIOGRAPHIC CITATION): NORTHEAST-GULF-SCI. 1990. vol. 11, no. 1, p. 89 NOTES: Abstract only. PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English PUBLICATION TYPE: J (Journal-Article); K (Conference); Y (Summary) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Strongylocentrotus droebachiensis were maintained in individual containers and fed prepared agarose foods containing meals of known, uniform compositions. Feeding rates were similar on protein rich foods and carbohydrate rich foods. Daily rates of ingestion did not vary significantly over 12 days of feeding on either food. Rate of fecal production did not differ with food type or over time. Fecal production dropped sharply after cessation of feeding. Throughput feed rate on either food was ca. 2 days. However, considerable mixing and retention of food occurred in the gut. DESCRIPTORS: diets-; food-composition; nutritive-value; digestion-; proteins-; carbohydrates-; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9218024 ACCESSION NUMBER: 2820578 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 123 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Functional response of the predators American lobster Homarus americanus (Milne-Edwards) and Atlantic wolffish Anarhichas lupus (L.) to increasing numbers of the green sea urchin Strongylocentrotus droebachiensis (Mueller). AUTHOR(S): Hagen,-N.T.; Mann,-K.H. AUTHOR AFFILIATION: Inst. Fish. and Aquacult., Nordland Coll., 8016 Noerkved-Bodoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1992. vol. 159, no. 1, pp. 89-112 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The predatory impact of the American lobster Homarus americanus and the Atlantic wolffish Anarhichas lupus on the green sea urchin Strongylocentrotus droebachiensis was investigated in a multifactorial experiment. Both predators exhibited either Type 2 or Type 3 functional responses to increasing prey density, but the magnitude of the response differed for the two predators, and for different prey sizes. Predation on large (> 20 mm) sea urchins increased approximately three-fold, i.e., from 1.12 to 3.54 urchins/day for wolffish, and from 0.35 to 0.97 urchins/day for lobster, when prey density was increased sixfold, i.e., from 5 to 30 urchins/tank. Although more urchins were killed at the highest density, the proportion of available urchins that were killed dropped by approximately equals 50%. Predation on small ( less than or equal to 20 mm) sea urchins was similar for both predators, increasing from approximately equals 0.5 to approximately equals 1.9 urchins/day with increased prey density. In the lobster treatment, a rock crab, Cancer irroratus , was included as alternative prey. DESCRIPTORS: predation-; population-number; Homarus-americanus; Anarhichas-lupus; Strongylocentrotus-droebachiensis; interspecific-relationships; food -organisms; predatory-behavior; population-levels CLASSIFICATIONS: Autecology:-Behavior-1423; Carcinology:-General-1281; Ichthyology:-General -1341; Invertebrate-Biology:-General:-General-1241 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9212593 ACCESSION NUMBER: 2777058 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 124 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Comparative feeding preference of Strongylocentrotus droebachiensis (Echinoidea) for the invasive seaweed Codium fragile ssp. tomentosoides (Chlorophyceae) and four other seaweeds. AUTHOR(S): Prince,-J.S.; LeBlanc,-W.G. AUTHOR AFFILIATION: Biol. Dep., Univ. Miami, Coral Gables, FL 33124, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1992. vol. 113, no. 1, pp. 159-163 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Laboratory experiments conducted during 1987 on Appledore Island, Maine, USA, tested whether feeding preference or the absence of an attractant was the cause for the occurrence of beds of Codium fragile ssp. tomentosoides (herein referred to as "Codium fragile ") within rocky barrens grazed clear of kelp by the sea urchin Strongylocentrotus droebachiensis . Consumption of C. fragile in single-diet experiments (1 seaweed/sea urchin) was highly variable and was not significantly different from that for several other seaweeds (Agarum cribrosum, Ascophyllum nodosum, Chondrus crispus , and Laminaria saccharina ) important in the field diet of the green sea urchin. In multiple-diet experiments (5 seaweeds/sea urchin) significantly less Codium fragile was eaten than Chondrus crispus , but significantly more Codium fragile was eaten than A. cribrosum . DESCRIPTORS: feeding-experiments; food-preferences; seaweeds-; biomass-; chemical -stimuli; Chlorophyta-; Codium-fragile; Agarum-cribrosum; Ascophyllum -nodosum; Chondrus-crispus; Echinoidea-; Strongylocentrotus -droebachiensis; ANW,-USA,-Maine,-Appledore-I. CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9201413 ACCESSION NUMBER: 2774952 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 125 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Two new species of Syndesmis (Turbellaria: Neorhabdocoela: Umagillidae) from the sea urchins Strongylocentrotus droebachiensis and Allocentrotus fragilis . AUTHOR(S): Westervelt,-A.W.Gr.; Kozloff,-E.N. AUTHOR AFFILIATION: Dep. Biol., Chapman Coll., Orange, CA 92666, USA SOURCE (BIBLIOGRAPHIC CITATION): CAH.-BIOL.-MAR. 1992. vol. 33, no. 1, pp. 115-124 INTERNATIONAL STANDARD NUMBERS: ISSN 0007-9723 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Two species of umagillid neorhabdocoels are described from sea urchins collected in Washington. Syndesmis inconspicua sp. nov., is found in the intestine of Strongylocentrotus droebachiensis , but is less common in this host than Syndisyrinx franciscanus Lehman, 1946. It is easily distinguished from S. franciscanus by its color, which is tan or pinkish brown, rather than red. Syndesmis neglecta sp. nov. inhabits the intestine of Allocentrotus fragilis . DESCRIPTORS: new-species; symbionts-; Turbellaria-; Syndesmis-inconspicua; Syndesmis -neglecta; Strongylocentrotus-; Allocentrotus-fragilis; INE,-USA, -Washington; taxonomy-; animal-morphology CLASSIFICATIONS: Invertebrate-Biology:-General:-Taxonomy-and-morphology-1243 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: IF9200422 ACCESSION NUMBER: 2739928 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2020955 Location: Fish-Ocean Stacks -- Call number: 591.9205 CA -- LIB HAS: t.1- (1960-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Cahiers Biologie Marine -- Call number: 591.9205 CA -- LIB HAS: t.1- (1960-) Location: NatSci Periodicals -- Call number: 591.9205 CA -- LIB HAS: t. 1-21 (1960-1980) Record 126 of 241 in ASFA 1988-1996 TITLE (ENGLISH): A review of echinoderms from Pleistocene marine deposits near Saint John, New Brunswick. AUTHOR(S): Miller,-R.F.; McAlpine,-D.F. AUTHOR AFFILIATION: Nat. Sci. Div., New Brunswick Mus., 277 Douglas Ave., Saint John, N.B. E2K 1E5, Canada SOURCE (BIBLIOGRAPHIC CITATION): ATL.-GEOL. 1991. vol. 27, no. 2, pp. 111-117 PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article); O (Review-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Two species of echinoderm, the brittlestar Ophiura sarsii Luetken and the common green sea urchin Strongylocentrotus droebachiensis Mueller, are found in Pleistocene marine clays near Saint John. Today, both of these echinoderms are considered boreal species and both range from the Arctic to somewhat south of Cape Cod. The species have been known to occur as fossils in the Saint John area since before 1865; however, few specimens actually exist. A summary of specimens in the New Brunswick Museum collections is presented, including brittlestars that probably belong to collections referred to by Sir J.W. Dawson. Two sea urchin specimens, not previously documented, are the only fossil specimens known to exist from this area. DESCRIPTORS: Canada,-New-Brunswick,-Saint-John; Pleistocene-; Echinodermata-; Strongylocentrotus-droebachiensis; Ophiura-sarsii; animal-fossils; museum -collections; biostratigraphy-; palaeontology- CLASSIFICATIONS: Biology:-General:-Paleontology-1187; Geology-and-Geophysics:-Paleontology -2273 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1); ASFA --2:-Ocean -Technology,-Policy-and-Non-Living-Resources (Q2) INPUT CENTER NUMBER: CS9207042 ACCESSION NUMBER: 2706124 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 127 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Changes in Alaskan soft-bottom prey communities along a gradient in sea otter predation. AUTHOR(S): Kvitek,-R.G.; Oliver,-J.S.; Gange,-A.R.-de; Anderson,-B.S. AUTHOR AFFILIATION: Moss Landing Mar. Lab., P.O. Box 450, Moss Landing, CA 95309, USA SOURCE (BIBLIOGRAPHIC CITATION): ECOLOGY. 1992. vol. 73, no. 2, pp. 413-428 PUBLICATION YEAR: 1992 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Sea otters (Enhydra lutris ), well documented as "keystone" predators in rocky marine communities, were found to exert a strong influence on infaunal prey communities in soft-sediment habitats. Direct and indirect effects of sea otter predation on subtidal soft-bottom prey communities were evaluated along a temporal gradient of sea otter occupancy around the Kodiak Archipelago. The results indicate that Kodiak otters forage primarily on bivalve prey and dramatically reduce infaunal bivalve and green sea urchin (Strongylocentrotus droebachiensis ) prey populations. Bivalve prey abundance, biomass, and size were inversely related to duration of sea otter occupancy. The relative conditions of shells discarded by otters in shallow (< 10 m) vs. deep (> 20 m) water at the same sites indicate that otters first exploited Saxidomus in shallow -water feeding areas, and later switched to Macoma spp. in deeper water. DESCRIPTORS: keystone-species; community-composition; aquatic-communities; USA,-Alaska, -Kodiak-Archipelago; marine-molluscs; marine-mammals; biotic-factors; Enhydra-lutris; Bivalvia-; Strongylocentrotus-; INE,-USA,-Alaska,-Kodiak-I. IDENTIFIERS: predation-; soft-bottom-communities CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CS9206381 ACCESSION NUMBER: 2698468 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 128 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Interactions between sea urchins (Strongylocentrotus droebachiensis ) and their predators in field and laboratory experiments. AUTHOR(S): Scheibling,-R.E.; Hamm,-J. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1991. vol. 110, no. 1, pp. 105-116 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Bibliogr.: 52 ref. PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ABSTRACT: Field observations and manipulative experiments in a nearshore cobble bed (2 to 3 m below mean low water) at Eagle Head, Nova Scotia, Canada, between 1984 and 1986, showed that small juveniles of Strongylocentrotus droebachiensis (3 to 6 mm diam) sheltering beneath cobbles had a refuge from predators such as rock crabs, small lobsters, and fish. Sea urchins gradually outgrew these refuges and small adults (25 to 30 mm) required larger rocks as shelter from predators, particularly large cancrid crabs. In a factorial experiment, effects of the presence of potential predators (rock crabs and lobsters) and/or food (kelp) on the behaviour of large juvenile (10 to 15 mm) and small adult sea urchins were examined in flowing seawater tanks. Both size classes formed exposed feeding aggregations when kelp was provided as food, irrespective of the presence or absence of predators. DESCRIPTORS: interspecific-relationships; protective-behaviour; refuges-; predators-; marine-crustaceans; Strongylocentrotus-droebachiensis; chemotaxis-; organism-aggregations; ANW,-Canada,-Nova-Scotia,-Eagle-Head IDENTIFIERS: marine-invertebrates CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9200123 ACCESSION NUMBER: 2645997 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 129 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Refugial Laminaria abundance and reduction in urchin grazing in communities in the north-west Atlantic. AUTHOR(S): Keats,-D.W. AUTHOR AFFILIATION: Bot. Dep., Univ. Western Cape, Post Bag X17, Bellville 7535, South Africa SOURCE (BIBLIOGRAPHIC CITATION): J.-MAR.-BIOL.-ASSOC.-U.K. 1991. vol. 71, no. 4, pp. 867-876 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3154 PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A literature review and new data are used to clarify geographical patterns of community response to release from heavy grazing by green sea urchins, Strongylocentrotus droebachiensis (O.F. Mueller), within the north-west Atlantic region. Large geographical areas identified where urchin-removal experiments have not been conducted are the Passamaquoddy Bay area of the northern Bay of Fundy, the south and west coasts of Newfoundland, and southern Labrador. Within the north-west Atlantic region, there has been variation in the degree of domination by Laminaria species of post-urchin -removal communities. This is probably due, at least in part, to variation in the availability of Laminaria populations in refugia from urchin grazing. The following hypothesis is developed and given a preliminary test: in eastern Newfoundland, the absence of refugial Laminaria longicruris populations is due to periodic ice-scour. DESCRIPTORS: grazing-; Strongylocentrotus-droebachiensis; Laminaria-; aquatic -communities; ANW- IDENTIFIERS: herbivores- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: MB9101163 ACCESSION NUMBER: 2590716 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.journals.cambridge.org/journal_JournaloftheMarineBiologicalAssociationoftheUK See records of latest issues received http://catalog.lib.washington.edu/record=b2010865 Location: Available Online Location: Fish-Ocean Stacks -- Call number: 570.6 MA -- LIB HAS: n.s. v.1- (1889- ) -- LATEST ISSUES IN DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Journal Marine Biological Association United Kingdom -- Call number: 570.5 MA -- LIB HAS: v. 1-2; n.s. v. 1- (1887-) Location: NatSci Periodicals -- Call number: 570.6 MA -- LIB HAS: v.1; n.s. v.1-62 (1887-1982) Record 130 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Technical evaluation of the sea urchin fertilization test: Proceedings of a workshop in Dartmouth, Nova Scotia. AUTHOR(S): Jonczyk,-E.; Doe,-K.G.; Wells,-P.G.; Yee,-S.G. AUTHOR AFFILIATION: Beak Consultants Ltd., Brampton, Ont., Canada CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Ottawa, Ont. (Canada). Communications Dir. CONFERENCE INFORMATION: 17. Annu. Aquatic Toxicity Workshop: Threshold Biological Response: Predicting and Determining Ecological Relevance, Vancouver, BC (Canada), 5 Nov 1990 SOURCE (BIBLIOGRAPHIC CITATION): PROCEEDINGS-OF-THE-SEVENTEENTH-ANNUAL-AQUATIC-TOXICITY-WORKSHOP:-NOVEMBER-5 -7,-1990,-VANCOUVER,-B.C.-VOLS.-1,2. COMPTES-RENDUS-DU-DIX-SEPTIEME -COLLOQUE-ANNUEL-SUR-LA-TOXICOLOGIE-AQUATIQUE:-5-7-NOVEMBRE-1990, -VANCOUVER,-C.-B..-VOLS.-1,2. Chapman,-P.;Bishay,-F.;Power,-E.;Hall, -K.;Harding,-L.;McLeay,-D.-et-al.-eds.. 1991. no. 1774V1,2 pp. 323-330 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-6457 SERIES TITLE/INFORMATION: CAN.-TECH.-REP.-FISH.-AQUAT.-SCI. no. 1774V1,2 PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: R (Report); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Sea urchin fertilization tests have recently been developed by the U.S. EPA (1988) and ASTM (in draft form) for regulatory and investigative testing associated with the marine environments. The test involves exposure of sea urchin sperm to an effluent or chemical sample and the endpoint is based on reduction of fertilized eggs relative to controls (expressed as EC50, NOEC, LOEC, chronic value). Two species of green sea urchin were tested: Lytechinus pictus and Strongylocentrotus droebachiensis . Limited investigation using a reference toxicant (CdCl sub(2)) suggested comparable sensitivity between the 2 species. The test is simple, rapid, sensitive, and is similar in cost to other sublethal tests. DESCRIPTORS: toxicity-tests; cadmium-; Echinodermata-; Strongylocentrotus -droebachiensis; Lytechinus-pictus; biological-fertilization; evaluation-; toxicants-; methodology-; Canada- IDENTIFIERS: bioassays- CLASSIFICATIONS: Pollution:-Methods-and-instruments-1502 JOURNAL ANNOUNCEMENT: ASFA --3:-Aquatic-Pollution-and-Environmental-Quality (Q5) INPUT CENTER NUMBER: CA9100629 ACCESSION NUMBER: 2578312 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2052716 Location: Fish-Ocean Microforms -- Call number: Microfiche MB-303 -- LIB HAS: no.927- (1980 -) -- Incomplete; Some only available in print format Location: Fish -Ocean Stacks -- Call number: SH1 .C352 -- LIB HAS: no.925- (1980-) -- Incomplete; Some volumes listed separately; Some only in microfiche Record 131 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Mitochondrial DNA diversity in the sea urchins Strongylocentrotus purpuratus and S. droebachiensis . AUTHOR(S): Palumbi,-S.R.; Wilson,-A.C. AUTHOR AFFILIATION: Dep. Zool., Univ. Hawaii, Honolulu, HI 96822, USA SOURCE (BIBLIOGRAPHIC CITATION): EVOLUTION. 1990. vol. 44, no. 2, pp. 403-415 PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Restriction-fragment analysis was used to measure mitochondrial DNA (mtDNA) variability in 79 individuals of two species of temperate sea urchins. For the purple urchin Strongylocentrotus purpuratus , individuals were collected 1,500 km apart in 1985 and again from the same localities in 1988. Twenty mtDNA genotypes belonging to four clades were found among 38 individuals. All four clades were found in both localities and in both years. For S. droebachiensis , only six mtDNA genotypes were found among 41 individuals collected from the Pacific and Atlantic oceans. More than 80% of the individuals belonged to two genotypes. The genotype that dominated collections in the Pacific also occurred in the Atlantic; however, a common Atlantic genotype was never found in the Pacific. These marine species show smaller genotypic differences than terrestrial species over similar spatial and temporal scales. DESCRIPTORS: DNA-; cell-organelles; mitochondria-; biochemical-analysis; comparative -studies; Strongylocentrotus-purpuratus; Strongylocentrotus-droebachiensis IDENTIFIERS: population-genetics; restriction-fragment-length-polymorphism CLASSIFICATIONS: Population-Studies:-Population-genetics-1443 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9113463 ACCESSION NUMBER: 2541897 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 132 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Amylase, cellulase and protease activities in surface and gut tissues of Dendraster excentricus, Pisaster ochraceus and Strongylocentrotus droebachiensis (Echinodermata). AUTHOR(S): Obrietan,-K.; Drinkwine,-M.; Williams,-D.C. AUTHOR AFFILIATION: Dep. Biol., West. Washington Univ., Bellingham, WA 98225, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1991. vol. 109, no. 1, pp. 53-57 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Incl. bibliogr.: 25 ref. PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: In general, variance in tissue hydrolase (amylase, cellulase and protease) activity between individuals of a particular species is greater than variance between tissue types or between species, e.g. although the specific activity of amylase in the gut tissue of Dendraster excentricus is significantly lower than that of aboral surface tissue, it is not significantly different than that of the oral surface tissue, or of the aboral surface of either Pisaster ochraceus or Strongylocentrotus droebachiensis . Cellulase activity of the gut tissue of S. droebachiensis was significantly higher than that of the gut tissue of P. ochraceus and D. excentricus , reflecting the omnivorous feeding habit of the sea urchin. Cellulase activity of the gut tissue of D. excentricus was not significantly higher than in P. ochraceus . Protease activity of the gut tissue of D. excentricus is significantly higher than that of the oral or aboral surface tissues. DESCRIPTORS: enzymatic-activity; Dendraster-excentricus; Pisaster-ochraceus; Strongylocentrotus-droebachiensis; tissues-; intestines-; variations-; INE,-USA,-Washington,-Post-Point IDENTIFIERS: hydrolases-; cellulases-; proteases-; amylases- CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: BF9101193 ACCESSION NUMBER: 2535985 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 133 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Effect of macroalage, microbial films, and conspecifics on the induction of metamorphosis of the green sea urchin Strongylocentrotus droebachiensis (Mueller). AUTHOR(S): Pearce,-C.M.; Scheibling,-R.E. AUTHOR AFFILIATION: GIROQ, Dep. Biol., Univ. Laval, Ste-Foy, Que. G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1991. vol. 147, no. 2, pp. 147-162 PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Various macroalgae, microbial films, and conspecifics were tested for their potential to induce metamorphosis of larvae of the green sea urchin Strongylocentrotus droebachiensis in the laboratory. The percentage of larvae that metamorphosed varied with macroalgal species: coralline and noncoralline red algae induced the greatest percent metamorphosis, fucoid and laminarian algae the lowest. Percent metamorphosis in response to acrylic plastic plates with marine microbial films was higher when films were developed in light than in dark and increased with the age of the film. Filmed substrata taken from the intertidal zone of a rocky shore induced a high percentage of larvae to metamorphose, sand collected subtidally did not. Adult urchins, adult-conditioned seawater, adult faecal matter, and recently settled juveniles did not induce metamorphosis of larvae, suggesting that a conspecific cue was not involved. These laboratory findings suggest that settlement of S. droebachiensis in the field may not be very selective, although other factors influencing larval supply and transport in the water column and along the boundary layer may result in differential settlement among different micro- and macrohabitats. DESCRIPTORS: microbial-films; Strongylocentrotus-droebachiensis; metamorphosis-; algae-; surface-films; microorganisms-; larva-settlement; stimuli-; behavioural -responses IDENTIFIERS: invertebrate-larvae; induction- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483; Invertebrate-Biology:-General:-General-1241 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9110435 ACCESSION NUMBER: 2509798 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 134 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Coupling of nauplii release in barnacles with phytoplankton blooms: A parallel strategy to that of spawning in urchins and mussels. AUTHOR(S): Starr,-M.; Himmelman,-J.H.; Therriault,-J.-C. AUTHOR AFFILIATION: GIROQ (Groupe Interuniv. Rech. Oceanogr. Quebec), Univ. Laval, Ste-Foy, Que. G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-PLANKTON-RES. 1991. vol. 13, no. 3, pp. 561-571 PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The coupling between the release of nauplii in Semibalanus balanoides and phytoplankton blooms was examined, and compared with the mechanism synchronizing spawning with phytoplankton abundance in green sea urchins (Strongylocentrotus droebachiensis ) and blue mussels (Mytilus edulis ). Close contact with phytoplankton cells is required to stimulate the release of nauplii in Semibalanus , whereas spawning in urchins and mussels is triggered by an extracellular metabolite of phytoplankton. The response is concentration dependent and positively correlated with the frequency of moulting. The moulting rate in Semibalanus is reported to be directly correlated with food intake and thus larval release should be proportional to feeding activity. DESCRIPTORS: spawning-; nauplii-; algal-blooms; food-availability; Semibalanus -balanoides; Strongylocentrotus-droebachiensis; Mytilus-edulis; metabolites- IDENTIFIERS: phytoplankton- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Ecosystems-and-energetics -1482; Carcinology:-Reproduction-and-development-1284; Aquatic -Communities:-Plankton-1461; Invertebrate-Biology:-General:-Reproduction -and-development-1244; Malacology:-Reproduction-and-development-1264 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9110165 ACCESSION NUMBER: 2500967 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 135 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Polypeptide composition and organization of the sea urchin extraembryonic hyaline layer. AUTHOR(S): Robinson,-J.J. AUTHOR AFFILIATION: Dep. Biochem., Memorial Univ. Newfoundland, St. John's, Nfld. A1B 3X9, Canada SOURCE (BIBLIOGRAPHIC CITATION): BIOCHEM.-CELL-BIOL. 1990. vol. 68, no. 9, pp. 1083-1089 PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The protein composition and organization of the sea urchin (Strongylocentrotus droebachiensis and Strongylocentrotus purpuratus ) extraembryonic hyaline layer was examined. Hyalin and a polypeptide of 45 kilodaltons (kDa) were present in hyaline layers isolated from 1-h-old embryos through to the pluteus larva stage. Several polypeptide species ranging in size from 175 to 32 kDa either decreased in amount or disappeared from the layer as embryonic development proceeded. Concomitant with the changes in composition, hyaline layers became progressively more refractory to dissolution by washing in Ca super(2+),Mg super(2+)-free seawater. Results suggest a structural organization within the hyaline layer that is both heterogenous and dynamic throughout embryonic development. DESCRIPTORS: hyaline-; peptides-; chemical-extraction; biochemical-analysis; molecular -weight; Strongylocentrotus-droebachiensis; Strongylocentrotus-purpuratus IDENTIFIERS: embryonic-development; protein-composition; hyaline-layer CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246; Invertebrate-Biology:-General:-Taxonomy-and-morphology-1243 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9107511 ACCESSION NUMBER: 2466959 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 136 of 241 in ASFA 1988-1996 TITLE (ENGLISH): American plaice, Hippoglossoides platessoides (Fabricius), predation on green sea urchins, Strongylocentrotus droebachiensis (O.F. Muller), in eastern Newfoundland. AUTHOR(S): Keats,-D.W. AUTHOR AFFILIATION: Bot. Dep., Univ. West. Cape, Priv. Bag X17, Bellville 7535, South Africa SOURCE (BIBLIOGRAPHIC CITATION): J.-FISH-BIOL. 1991. vol. 38, no. 1, pp. 67-72 PUBLICATION YEAR: 1991 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Green sea urchins Strongylocentrotus droebachiensis were the most abundant food species (62% by weight) in American plaice Hippoglossoides platessoides (all female) collected from an area in eastern Newfoundland where sandy bottom abuts urchin dominated bedrock. Of secondary importance were capelin (12 multiplied by 9% by weight), which were spawning in the area when the samples were obtained. The results suggest that American plaice may be important predators of urchins in such habitats. DESCRIPTORS: predation-; Canada,-Newfoundland; Hippoglossoides-platessoides; Strongylocentrotus-droebachiensis; ANW,-Canada,-Newfoundland; habitat- IDENTIFIERS: food-organisms CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: CS9106013 ACCESSION NUMBER: 2446255 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 137 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Marine invertebrate sperm-specific histones and histone-DNA interactions: Circular dichroism and ultraviolet spectroscopy studies. AUTHOR(S): Misselwitz,-R.; Zirwer,-D.; Damaschun,-H.; Damaschun,-G.; Welfle,-H.; Zalenskaya,-I.A.; Ramm,-E.I.; Vorob'-ev,-V.I. AUTHOR AFFILIATION: Zentralinst. Molekularbiol. Akad. Wiss., Robert-Roessle-St. 10, 1115 Berlin -Buch, FRG SOURCE (BIBLIOGRAPHIC CITATION): INT.-J.-BIOL.-MACROMOL. 1986. vol. 8, no. 4, pp. 194-200 PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Circular dichroism (c.d.) and turbidity measurements have been performed to study the structural behaviour of the marine invertebrate sperm-specific histones H1, H2B and of the mollusc sperm-specific protein S2 and their dependence on ionic strength as well as the formation of complexes of these proteins with DNA. Sea urchin sperm histones H1 from Strongylocentrotus intermedius or Strongylocentrotus droebachiensis attain, at 2 M NaCl, a higher helicity than histones H1 from the sperm of the bivalve mollusc Chlamis islandicus or from calf thymus. This extra helical part of the sea urchin sperm histones H1 is rapidly digested by trypsin. The complexes of the marine invertebrate H1 and S2 proteins with DNA are characterized by c.d. spectra with strong negative ellipticities corresponding to the (-PSI)-type c.d. spectra of calf thymus H1-DNA complexes. DESCRIPTORS: histones-; DNA-; sperm-; proteins-; Strongylocentrotus- IDENTIFIERS: marine-invertebrates CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) INPUT CENTER NUMBER: CS9104469 ACCESSION NUMBER: 2423632 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 138 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Effects of an experimental reduction in grazing by green sea urchins on a benthic macroalgal community in eastern Newfoundland. AUTHOR(S): Keats,-D.W.; South,-G.R.; Steele,-D.H. AUTHOR AFFILIATION: Bot. Dep., Univ. Western Cape, Priv. Bag X17, Bellville 7535, South Africa SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER. 1990. vol. 68, no. 1-2, pp. 181-193 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Bibliogr.: 57 ref. PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: An urchin removal experiment was performed over 5 yr at a heavily grazed, sublittoral site in Conception Bay, Newfounland. Three transects were used: one unmanipulated, one from which urchins were removed manually for 3 yr, and one from which urchins were removed using quicklime. Each site was sampled in the upper (2 to 3 m) and middle (6 to 9 m) urchin-dominated zone. Macroalgal biomass increased following urchin removal by both methods. At 2 to 3 m a closed canopy of Alaria esculenta developed, with few other algal species, except during the summer when the canopy was reduced by blade erosion. The community that developed at 6 to 9 m consisted mainly of Desmarestia aculeata , with lesser amounts of other canopy-forming algae (A. esculenta, Agarum cribrosum , and Laminaria digitata ). When urchins were allowed access to the urchin removal sites, they grazed away all algae except A. cribrosum and Ptilota serrata . Some A. cribrosum survived for at least 2 yr after urchin reinvasion. DESCRIPTORS: phytobenthos-; Echinoidea-; Strongylocentrotus-droebachiensis; Phaeophyceae -; Alaria-esculenta; Desmarestia-aculeata; Agarum-cribrosum; Laminaria -digitata; Rhodophyta-; Ptilota-serrata; seasonal-variations; annual -variations; species-diversity; biomass-; ANW,-Canada,-Newfoundland, -Conception-Bay IDENTIFIERS: grazing- CLASSIFICATIONS: Aquatic-Communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) INPUT CENTER NUMBER: BF9100184 ACCESSION NUMBER: 2405452 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 139 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Allozymic and physiological variation in populations of sea urchins (Strongylocentrotus spp.). AUTHOR(S): Stickle,-W.B.; Liu,-Li-Lian; Foltz,-D.W. AUTHOR AFFILIATION: Dep. Zool. and Physiol., Louisiana State Univ., Baton Rouge, LA 70803, USA SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-ZOOL.-J.-CAN.-ZOOL. 1990. vol. 68, no. 1, pp. 144-149 PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Tolerance and activity coefficients (1000/righting time (s)) were determined in different salinity treatments for Strongylocentrotus droebachiensis from a variable-salinity habitat north of Juneau, Alaska, and for S. droebachiensis and S. pallidus from high-salinity habitats near Friday Harbor, Washington. The 28-day LC sub(50) values of populations of S. droebachiensis from southeastern Alaska and Washington were similar while that of S. pallidus was 21 ppt salinity. Activity coefficients of S. droebachiensis indicate functional competence from 20 to 30 ppt salinity; S. pallidus remains competent only at 30 ppt salinity. For allozymic analysis, sea urchins (N = 820) were collected from five locations (three in Alaska and two in Washington). Two polymorphic allozyme loci (malate dehydrogenase-2 and phosphoglucose isomerase) were examined in all populations. DESCRIPTORS: population-genetics; animal-physiology; osmoregulation-; genes-; glucose-6 -phosphate-isomerase; malate-dehydrogenase; population-genetics; Strongylocentrotus-; comparative-studies; INE,-USA,-Washington; INE,-USA, -Alaska IDENTIFIERS: biopolymorphism-; variation- CLASSIFICATIONS: Population-Studies:-Population-genetics-1443; Invertebrate-Biology: -General:-Genetics-and-evolution-1245 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) INPUT CENTER NUMBER: CS9100148 ACCESSION NUMBER: 2373479 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 140 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Community dynamics on a subtidal cobble bed following mass mortalities of sea urchins. AUTHOR(S): Scheibling,-R.E.; Raymond,-B.G. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER. 1990. vol. 63, no. 2-3, pp. 127-145 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: 64 ref. PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The macrobenthic community of a shallow subtidal cobble bed at Eagle Head on the Atlantic coast of Nova Scotia was monitored from ca 4 mo before to 41 mo after mass mortalities of sea urchins Strongylocentrotus droebachiensis in Sept 1983. Biomass of erect algae on cobbles increased from 0 to between 50 and 75 g (dry weight)/m super(2) after the sea urchin die-off, and consisted mainly of small and sparsely distributed plants of Fucus evanescens) and Chondrus crispus . In contrast, algal biomass increased from 0 to ca 2.8 kg/m super(2) on an adjacent boulder ridge where large kelps (Laminaria longicruris, L. digitata, Saccorhiza dermatodea)) formed a dense canopy. The macroflora of cobble beds at 2 other sites was similar in biomass and composition to the cobble bed at Eagle Head. At a third site, the sea urchin population had recovered and precluded the establishment of non-calcareous algae on the cobbles. In the absence of sea urchins, herbivorous molluscs, mainly perwinkles Littorina littorea , limpets Notoacmaea testudinalis and chitons Tonicella rubra , dominated the cobble macrofauna, reaching densities of up to ca 150, 400, and 1300 ind/m super(2) respectively at Eagle head. DESCRIPTORS: Strongylocentrotus-droebachiensis; Fucus-; Chondrus-crispus; Laminaria-; Saccorhiza-dermatodea; total-mortality; cobblestone-; zoobenthos-; ecological-succession; population-density; biomass-; filter-feeders; seaweeds-; ANW,-Canada,-Nova-Scotia,-Eagle-Head; community-composition; population-dynamics CLASSIFICATIONS: Aquatic-Communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 2303608 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 141 of 241 in ASFA 1988-1996 TITLE (ENGLISH): A comparison of fertilization envelope development in three species of Strongylocentrotus (S. franciscanus, S. droebachiensis , and S. purpuratus ). AUTHOR(S): Carroll,-E.J.; Cohen,-J.S. AUTHOR AFFILIATION: Dep. Biol., Univ. California, Riverside, CA 92521, USA SOURCE (BIBLIOGRAPHIC CITATION): MOL.-REPROD.-DEV. 1990. vol. 25, no. 1, pp. 77-86 PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The ultrastructure of fertilization envelope development and the polypeptide spectra of Strongylocentrotus franciscanus and S. droebachiensis envelopes were compared to S. purpuratus . DESCRIPTORS: fertilization-; biological-fertilization; polypeptides-; biological -membranes; embryonic-development; Strongylocentrotus-franciscanus; Strongylocentrotus-droebachiensis; Strongylocentrotus-purpuratus; ultrastructure-; comparative-studies; Strongylocentrotus- IDENTIFIERS: envelopes-; development-; comparison-; fertilization-envelopes CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 2298509 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 142 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Urchin foraging and algal survival strategies in intensely grazed communities in eastern Canada. AUTHOR(S): Himmelman,-J.H.; Nedelec,-H. AUTHOR AFFILIATION: Dep. Biol., GIROQ, Univ. Laval, Quebec, Que. G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-FISH.-AQUAT.-SCI. 1990. vol. 47, no. 5, pp. 1011-1026 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X NOTES: Incl. bibliogr.: 84 ref. PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The authors examine relationships between food preferences of the urchin, Strongylocentrotus droebachiensis , and such properties of fleshy macroalgae as dry mass, ash content, calorific value, and phenolic content. Grazing resistant algae characteristic of urchin dominated habitats rank low in attraction, reflecting the ability of urchins to detect and locate them in the field. The susceptible algae survive through spatial and temporal escapes, mainly in shallow water where the effectiveness of urchin grazing is reduced. The urchin is a selective feeder and its ability to locate preferred algae promotes intake of foods (algae in the subtidal algal fringe and drift algae) that enhance fitness by favouring somatic and gonadal growth. DESCRIPTORS: Strongylocentrotus-droebachiensis; algae-; interspecific-relationships; defence-mechanisms; ANW,-Canada; feeding-behaviour IDENTIFIERS: food-preferences CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 2237757 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 143 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Food of winter flounder Pseudopleuronectes americanus in a sea urchin dominated community in eastern Newfoundland. AUTHOR(S): Keats,-D.W. AUTHOR AFFILIATION: Bot. Dep., Univ. Western Cape, Priv. Bag X17, Belville 7535, South Africa SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER.. 1990. vol. 60, no. 1-2, pp. 13-22 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Bibliogr.: 25 ref. PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Gut contents were analysed from 63 winter flounder (Pseudopleuronectes americanus ) collected off eastern Newfoundland from rocky bottoms dominated by green sea urchins Strongylocentrotus droebachiensis . Availability of prey items consumed was determined in the field. After removal from the analysis of items too large for the flounder to eat, and of those from cryptic microhabitats, it is evident that winter flounder are not selecting their food species. They do, however, select those prey items which are near the maximum size which they can consume, rather than the most abundant size. Predation by winter flounder may be large enough to influence the abundance of 2 important prey taxa, Metridium senile and Acmaea testudinalis . Comparison of gut contents of winter flounder from smooth and rough bottoms suggests that winter flounder predation on the green sea urchins themselves is unlikely to be important except on smooth bottom lacking cryptic microhabitat. DESCRIPTORS: prey-selection; Metridium-senile; Pseudopleuronectes-americanus; Acmaea -testudinalis; food-availability; biomass-; size-distribution; dominant -species; selective-feeding; substrate-preferences; habitat-; ANW,-Canada, -Newfoundland IDENTIFIERS: stomach-content CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425; Ichthyology:-General-1341 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 2222473 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 144 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Direct coupling of marine invertebrate spawning with phytoplankton blooms. AUTHOR(S): Starr,-M.; Himmelman,-J.H.; Therriault,-J.-C. AUTHOR AFFILIATION: Groupe Interuniv. Rech. Oceanogr. Quebec and Dep. Biol., Univ. Laval, Ste -Foy, Que. G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): SCIENCE-WASH.. 1990. vol. 247, no. 4946, pp. 1071-1074 PUBLICATION YEAR: 1990 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Spawning of green sea urchins (Strongylocentrotus droebachiensis ) and blue mussels (Mytilus californianus ) may be triggered by a heat-stable metabolite released by various species of phytoplankton. Mussels require a higher phytoplankton density for a maximum response than urchins, perhaps because mussels are exposed to higher concentrations of phytoplankton as a result of their filtering activity. Phytoplankton as a spawning cue appears to integrate numerous physical and biotic factors indicating favorable conditions for larval growth and survival. Evolution of similar direct coupling of the larval phase with phytoplankton blooms may be common among marine invertebrates. DESCRIPTORS: metabolites-; wild-spawning; Strongylocentrotus-droebachiensis; Mytilus -edulis; induced-breeding; algal-blooms; spawning- IDENTIFIERS: phytoplankton-; coupling-; culture-systems CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483; Aquaculture:-Shellfish-culture-1583 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1); ASFA-Aquaculture -Abstracts (Q3) ACCESSION NUMBER: 2200164 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 145 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Non-occurrence of free-living Paramoeba invadens in water and sediments of Halifax Harbour, Nova Scotia, Canada. AUTHOR(S): Jellett,-J.F.; Novitsky,-J.A.; Cantley,-J.A.; Scheibling,-R.E. AUTHOR AFFILIATION: Biol. Dep., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER.. 1989. vol. 56, no. 1-2, pp. 205-209 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 PUBLICATION YEAR: 1989 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Seawater and sediment samples from various sites in or near Halifax Harbour were cultured for Paramoeba , as were tissues of the natural sea urchin host Strongylocentrotus droebachiensis sampled from Halifax Harbour. Results indicate that (1) there is no evidence of a free-living endemic population of Paramoeba invadens in or near Halifax Harbour, (2) S. droebachiensis , the natural host for P. invadens , do not harbour a reservoir population of this organism at temperatures sub-optimal for paramoebiasis, and (3) Paramoeba which are morphologically indistinct from laboratory stocks of P. invadens were recovered near the outfall pipe. These organisms may have been released via the outfall pipe into Halifax Harbour and subsequently lost virulence. DESCRIPTORS: temperature-effects; Echinoidea-; Strongylocentrotus-droebachiensis; Protozoa-; Paramoeba-invadens; population-density; sediment-analysis; water-analysis; ANW,-Canada,-Nova-Scotia,-Halifax IDENTIFIERS: protozoan-diseases CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 2182859 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 146 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Community structure of macroinvertebrates inhabiting the rocky subtidal zone in the Gulf of Maine: Seasonal and bathymetric distribution. AUTHOR(S): Ojeda,-F.P.; Dearborn,-J.H. AUTHOR AFFILIATION: Dep. Ecol., Fac. Cien. Biol., Pontificia Univ. Catolica Chile, Casilla 114 -D, Santiago, Chile SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER.. 1989. vol. 57, no. 2, pp. 147-161 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Bibliogr.: 59 ref. PUBLICATION YEAR: 1989 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Community structure of the macroinvertebrate fauna inhabiting a rocky subtidal habitat at Pemaquid Point, Maine, USA, was studied, using qualitative and quantitative descriptions of the distribution, diversity and abundance of benthic species, as well as their spatial (bathymetric) and temporal (seasonal) changes. A total of 60 species of macroinvertebrates representing 9 phyla were found in the 133 (0.25 m super(2)) disruptive benthic samplings obtained by SCUBA between August 1984 and October 1986. Crustaceans, mollusks and polychaetes were best represented accounting for ca 77% of the total number of species identified. Green sea urchin Strongylocentrotus droebachiensis) and horse mussel Modiolus modiolus were consistently the most important (in biomass and density) assemblage components. Bathymetrically, there were clear patterns in the composition and abundance of macroinvertebrates. Sea urchins decreased in abundance with depth (from 5 to 18 m), while the opposite was observed in horse mussels. DESCRIPTORS: zoobenthos-; ecological-zonation; Echinoidea-; Strongylocentrotus -droebachiensis; Bivalvia-; Modiolus-modiolus; community-composition; intertidal-environment; seasonal-variations; habitat-; population-density; species-diversity; vertical-distribution; ANW,-USA,-Maine,-Pemaquid-Point IDENTIFIERS: rocky-shores CLASSIFICATIONS: Aquatic-Communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 2103274 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 147 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Roles for Ca super(2+), Mg super(2+), and NaCl in modulating the self -association reaction of hyalin, a major protein component of the sea -urchin extraembryonic hyaline layer. AUTHOR(S): Robinson,-J.J. AUTHOR AFFILIATION: Dep. Biochem., Memorial Univ. Newfoundland, St. John's, Nfld. A1B 3X9, Canada SOURCE (BIBLIOGRAPHIC CITATION): BIOCHEM.-J. 1988. vol. 256, no. 1, pp. 225-228 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The self-association reaction of hyalin, a major protein component of the sea-urchin (Strongylocentrotus droebachiensis ) extraembryonic hyaline layer, was examined. Concentrations of Ca super(2+) below 1 mM had little effect on the hyalin gelation reaction, but higher concentrations of the cation induced protein aggregation. Quantitative aggregate formation required a Ca super(2+) concentration in excess of 10 mM. This reaction was modulated by both NaCl and Mg super(2+). The results identify the parameters that modulate hyalin self-association, a reaction that is essential for hyaline-layer assembly around the developing sea-urchin embryo. DESCRIPTORS: proteins-; embryos-; larval-development; calcium-; magnesium-; sodium -chloride; Strongylocentrotus-droebachiensis; aggregation- IDENTIFIERS: hyalin-; self-association; reaction-; role-; hyalin- CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246; Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 2032458 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 148 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Simultaneous spawning of six species of echinoderms in Barkley Sound, British Columbia. AUTHOR(S): Pearse,-J.S.; McClary,-D.J.; Sewell,-M.A.; Austin,-W.C.; Perez-Ruzafa,-A.; Byrne,-M. AUTHOR AFFILIATION: Inst. Mar. Sci., Univ. California, Santa Cruz, CA 95064, USA SOURCE (BIBLIOGRAPHIC CITATION): INT.-J.-INVERTEBR.-REPROD.-DEV. 1988. vol. 14, no. 2-3, pp. 279-288 INTERNATIONAL STANDARD NUMBERS: ISSN 0168-8170 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Six species of echinoderms were observed spawning (1 holothuroid, 1 echinoid, 4 asteroids) during a single 40 min dive to 10 to 18 m depth in Barkley Sound, Vancouver Island, on the afternoon of 9 August 1987, the day after the full moon. Most of the spawning animals were not close to conspecific individuals. None were observed spawning the following day. Published reports indicate that it is not uncommon for widely scattered individuals of echinoderms to broadcast spawn in the field. Fertilization success often may be low. Moreover, simultaneous spawning by different species, as we and others have observed, indicates that the incidence of hybridization (either lethal or viable) could be high and have important consequences to the biology of the species involved. DESCRIPTORS: spawning-; hybridization-; Asteroidea-; Echinoidea-; Holothuroidea-; Dermasterias-imbricata; Orthasterias-koehleri; Pisaster-brevispinus; Stylasterias-forreri; Strongylocentrotus-droebachiensis; Parastichopus -californicus; reproductive-behaviour; biological-fertilization; INE, -Canada,-British-Columbia,-Barkley-Sound CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 1982297 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2064372 Location: FriHarbor Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984 -1988) Location: NatSci Periodicals -- Call number: QP251 .I628 -- LIB HAS: v.7-14 (Mar. 1984-1988) Record 149 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Echinomermella matsi sp.n., an endoparasitic nematode from the sea urchin Strongylocentrotus droebachiensis in northern Norway. AUTHOR(S): Jones,-G.M.; Hagen,-N.T. AUTHOR AFFILIATION: SEATECH Ltd., P.O. Box 2161, Stn. M., Halifax, N.S. B3J 3C4, Canada SOURCE (BIBLIOGRAPHIC CITATION): SARSIA. 1987. vol. 72, no. 3-4, pp. 203-212 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Echinomermella matsi sp.n. is described from the pervisceral coelom of the sea urchin Strongylocentrotus droebachiensis Mueller in Vestfjorden northern Norway. Morphologically E. matsi resembles the enoplid Mermithoidea, with an extremely reduced oesophagus, intestinal trophosome, and vestigal rectum and anus, and closely resembles Echinomermella grayi (Gemmill, 1901) previously described from Echinus esculentus L. Both nematodes are atypical mermithoids since the parasitic stage is the adult, not juvenile, and females are ovoviviparous with retention of eggs and larvae in the pseudocoelom; vulva and vagina have not been seen. The occurrence of E. matsi is limited to S. droebachiensis although Echinus esculentus and Strongylocentrotus pallidus G.O. Sars co-occur in the study area. DESCRIPTORS: new-species; parasites-; Echinomermella-matsi; Strongylocentrotus -droebachiensis; ANE,-Norway,-Vestfjorden; animal-morphology; taxonomy- CLASSIFICATIONS: Invertebrate-Biology:-General:-Taxonomy-and-morphology-1243; Productivity, -Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: ASFA-1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) ACCESSION NUMBER: 1967569 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 150 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Natural and experimentally induced lesions of the body wall of the sea urchin Strongylocentrotus droebachiensis . AUTHOR(S): Roberts-Regan,-D.L.; Scheibling,-R.E.; Jellett,-J.F. AUTHOR AFFILIATION: Park View Educ. Cent., Bridgewater, N.S. B4V 1C4, Canada SOURCE (BIBLIOGRAPHIC CITATION): DIS.-AQUAT.-ORG. 1988. vol. 5, no. 1, pp. 51-62 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Lesions of the body wall occurred in about 7% of sea urchins Strongylocentrotus droebachiensis in a healthy population off Nova Scotia, Canada. Lesions occurred predominantly in the oral hemisphere in both ambulacral and interambulacral areas. On average, lesions covered 8 to 12% of the total test surface of individuals, although lesion size was quite variable. Lesioned areas of test generally were darkly pigmented, covered with a mucoid layer, and devoid of spines, pedicellariae and tube feet. Three morphological types of lesions were identified. Microflora normally found on healthy body surfaces of the sea urchin proliferated in lesioned areas. Mechanical abrasion of the test surface of the sea urchin produced lesions similar in gross morphology to naturally occurring ones. In laboratory experiments, lesions developed in all abraded individuals, irrespective of exposure to lesioned or healthy conspecifics either by a waterborne route or by direct contact. DESCRIPTORS: Strongylocentrotus-droebachiensis; lesions-; bacterial-diseases; microorganisms-; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases -1484; Invertebrate-Biology:-General:-General-1241 JOURNAL ANNOUNCEMENT: ASFA --1:-Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1935894 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 151 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Heat waves, baby booms, and the destruction of kelp beds by sea urchins. AUTHOR(S): Hart,-M.W.; Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Zool., NJ-15, Univ. Washington, Seattle, WA 98195, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1988. vol. 99, no. 2, pp. 167-176 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Incl. 53 ref. PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Large populations of sea urchins, Strongylocentrotus droebachiensis , destroyed kelp beds along the Atlantic coast of Nova Scotia in the 1960's and 1970's. The origin of these large sea urchin populations is not understood. Authors investigated the potential influence of variable growth and development of the planktonic larvae of sea urchins (in response to temperature and food abundance) on recruitment of benthic juveniles. Food abundance had a smaller effect on larval growth, and these effects were apparent only at high temperature. Larvae fed the same concentration of two different algal food species grew and developed similarly. DESCRIPTORS: heat-affected-zones; kelps-; temperature-effects; food-availability; population-density; Echinoidea-; Strongylocentrotus-droebachiensis; growth -; invertebrate-larvae; ANW,-Canada,-Nova-Scotia,-Digby-County,-Sandy-Cove CLASSIFICATIONS: Autecology:-Environmental-effects-1422; Productivity,-Ecosystems,-Species -Interactions:-Species-interactions:-General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1908689 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 152 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Field observations of summer and autumn spawning by Strongylocentrotus droebachiensis , green sea urchins, in eastern Newfoundland. AUTHOR(S): Keats,-D.W.; Hooper,-R.G.; Steele,-D.H.; South,-G.R. AUTHOR AFFILIATION: Dep. Biol., Memorial Univ., St. John's, Nfld. A1B 3X9, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-FIELD-NAT. 1987. vol. 101, no. 3, pp. 463-465 INTERNATIONAL STANDARD NUMBERS: ISSN 0008-3550 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Summer spawning of Green Sea Urchins, Strongylocentrotus droebachiensis , was directly observed on four separate occasions on the coast of eastern Newfoundland. DESCRIPTORS: spawning-; Strongylocentrotus-droebachiensis; summer-; autumn-; ANW, -Canada,-Newfoundland CLASSIFICATIONS: Population-Studies:-Population-dynamics-1442 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1900515 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2041311 Location: NatSci Periodicals -- Call number: 570.5 CA -- LIB HAS: v.33- (1919-) -- LATEST ISSUES ON DISPLAY Record 153 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Natural diets of lobster Homarus americanus from barren ground and macroalgal habitats off southwestern Nova Scotia, Canada. AUTHOR(S): Elner,-R.W.; Campbell,-A. AUTHOR AFFILIATION: Dep. Fish. and Oceans, Scotia-Fundy Region, Halifax Fish. Res. Lab., P.O. Box 550, Halifax, N.S. B3J 2S7, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER.. 1987. vol. 37, no. 2-3, pp. 131-140 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Incl. 50 ref. PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Stomach contents of 1032 lobsters Homarus americanus from an area with dense macroalgae (n = 115) and sea urchin (Strongylocentrotus droebachiensis ) denuded barrens (n = 917) off the southwestern coast of Nova Scotia were examined to compare natural diets. Gross dietary composition and mean stomach fullness appeared similar in these 2 habitats; the diet spectrum encompassed a broad range of plants and animals but was dominated by molluscan, crustacean, echinoderm, and polychaete remains. Mussels (Modiolus modiolus, Mytilus edulis ) appeared the most consistently important identified prey species, in terms of frequency-of-occurrence and estimated volume (points) indexes. Temporal shifts in diet composition were evident from discriminant analysis, predominantly through decreased importance of sea urchins, ophiuroids, lobsters, and brachyuran crabs in February-March. Data on the dietary importance of sea urchins in relation to other prey taxa did not support the hypothesis that lobsters are a principal, "keystone" predator on sea urchins. There is still insufficient evidence to assess whether lobster production is food-limited on barrens. DESCRIPTORS: stomach-content; ecological-distribution; Strongylocentrotus -droebachiensis; Modiolus-modiolus; Mytilus-edulis; Mollusca-; Crustacea-; Homarus-americanus; seasonal-variations; ANW,-Canada,-Nova-Scotia,-McNutts -J.,-Shelburne-Harbour CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425; Productivity,-Ecosystems, -Species-Interactions:-Species-interactions:-General-1483; Aquatic -Communities:-Benthos-1462; Carcinology:-General-1281; Aquaculture: -Shellfish-culture-1583 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1); Aquaculture (Q3) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1877369 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 154 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Omnivory in Strongylocentrotus droebachiensis (Mueller) (Echinodermata: Echinoidea): Predation on subtidal mussels. AUTHOR(S): Briscoe,-C.S.; Sebens,-K.P. AUTHOR AFFILIATION: Dep. Biol., Rider Coll., Lawrenceville, NJ 08648-3099, USA SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1988. vol. 115, no. 1, pp. 1-24 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Strongylocentrotus droebachiensis (Mueller) has long been recognized as the dominant subtidal herbivore of the Gulf of Maine. Gut contents of urchins collected from subtidal rock walls indicate that invertebrates, such as sponges, hydrozoans, bryozoans, and tunicates, are also part of its diet. However, the importance of nonalgal food resources is poorly understood. The authors first observed specialized predation in the field when urchins grazing a subtidal Mytilus edulis L. bed were seen with mussels in their buccal opening. Gut analysis revealed that bits of mussel shell packed the pharynx and the esophagus. Mussel predation by urchins has been observed most frequently in areas otherwise dominated by coralline algal pavement. It is most likely a preferred and beneficial resource in such areas, although still inferior to the optimal macroalgal diet. DESCRIPTORS: feeding-behavior; predation-; food-preferences; USA,-Maine-Gulf; diets-; omnivores-; Strongylocentrotus-droebachiensis; Mytilus-edulis; ANW,-Maine -Gulf IDENTIFIERS: herbivory- CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1825415 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 155 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Virulence of Paramoeba invadens Jones (Amoebida, Paramoebidae) from monoxenic and polyxenic culture. AUTHOR(S): Jellett,-J.F.; Scheibling,-R.E. AUTHOR AFFILIATION: Biol. Dep., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-PROTOZOOL. 1988. vol. 35, no. 3, pp. 422-424 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The purpose of this study was to investigate polyxenic and monoxenic culture methods for long-term maintenance of P. invadens in a virulent form as a necessary prerequisite for effective use of this organism as a biological control agent. Paramoeba invadens is a pathogenic marine amoeba responsible for mass mortalities of sea urchins (Strongylocentrotus droebachiensis ) along the Atlantic coast of Nova Scotia in the early 1980's. The amoeba has been maintained in vivo in S. droebachiensis for five years in the laboratory without observable loss of virulence. P. invadens was cultured polyxenically (on mixed marine bacteria) and monoxenically (on a single strain of Pseudomonas nautica ) on non-nutrient agar for 58 weeks and 19 weeks respectively. Pathogenicity tests showed some loss of virulence in monoxenic culture after 15 weeks and in polyxenic culture after 58 weeks. Polyxenic culture is recommended for long-term culture of P. invadens although periodic passage of the amoeba through the sea urchin host may be required to maintain virulence for periods exceeding one year. DESCRIPTORS: virulence-; pathogenicity-; parasitism-; Strongylocentrotus-droebachiensis; biological-control; pathogens-; protozoan-diseases; laboratory-culture; Paramoeba-invadens IDENTIFIERS: culture-; effects-on; use- CLASSIFICATIONS: Aquaculture:-Culture-of-other-aquatic-animals-1584 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1820818 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 156 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Effect of temperature and prey availability on growth of Paramoeba invadens in monoxenic culture. AUTHOR(S): Jellett,-J.F.; Scheibling,-R.E. AUTHOR AFFILIATION: Biol. Dep., Dalhousie Univ., Halifax, N.S. B3M 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): APPL.-ENVIRON.-MICROBIOL. 1988. vol. 54, no. 7, pp. 1848-1854 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Paramoeba invadens Jones 1985 is a pathogenic marine amoeba responsible for mass mortalities of sea urchins (Strongylocentrotus droebachiensis ) off Nova Scotia between 1980 and 1983. This study examined the effect of prey availability and temperature on the growth of P. invadens in monoxenic culture (with the marine bacterium Pseudomonas nautica ). At 15 degree C, the specific growth rate of P. invadens increased with bacterial prey concentration and was highest at 10 super(8) bacterial cells ml super(-1). Growth rate of P. invadens was maximal at 15 to 20 degree C (which corresponds to annual sea temperature maxima in the natural environment) and the minimum generation time was 19.41 h at 20 degree C. At 10 and 12 degree C, generation times were 91.18 and 73.39 h, respectively; at 2 and 5 degree C, there was no growth. P. invadens did not survive monoxenic culture at 27 degree C. Growth rates of P. invadens in vitro were positively correlated with time to morbidity of infected S. droebachiensis . DESCRIPTORS: temperature-; Pseudomonas-nautica; predator-prey-interactions; pathogens-; food-availability; temperature-effects; population-dynamics; Paramoeba -invadens; controlled-conditions IDENTIFIERS: growth-; effects-on; availability- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1818333 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 157 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Experimental infection of the echinoid Strongylocentrotus droebachiensis with Paramoeba invadens : Quantitative changes in the coelomic fluid. AUTHOR(S): Jellett,-J.F.; Wardlaw,-A.C.; Scheibling,-R.E. AUTHOR AFFILIATION: Biol. Dep., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): DIS.-AQUAT.-ORG. 1988. vol. 4, no. 2, pp. 149-157 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Paramoebiasis, due to Paramoeba invadens , was transmitted from diseased to healthy echinoids Strongylocentrotus droebachiensis in the waterborne infection apparatus of Scheibling & Stephenson (1984). Control echinoids were exposed to healthy S. droebachiensis in a parallel apparatus. Groups of 8 individuals from the infected treatment were sacrificed in the pre -symptomatic period and at 24 and 72 h after development of symptoms of the disease, as evidenced by loss of attachment (LOA) to aquarium surfaces. Coelomic fluid (CF) was drawn into EGTA as an anticoagulant, and the concentration of coelomocytes determined directly and after density-gradient fractionation into 3 different cell bands. The concentration of total coelomocytes was significantly lower in infected echinoids than in controls, due to smaller numbers of cells in the band containing white spherule and vibratile cells and that containing red spherule cells. DESCRIPTORS: pathology-; protozoan-diseases; infectious-diseases; Strongylocentrotus -droebachiensis; Paramoeba-invadens IDENTIFIERS: experimental-infection; coelomic-fluid CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1812867 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 158 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Anaerobic and aerobic energy metabolism in ovaries of the sea urchin Strongylocentrotus droebachiensis . AUTHOR(S): Bookbinder,-L.H.; Shick,-J.M. AUTHOR AFFILIATION: Univ. California, A-002, Scripps Inst. Oceanogr., Mar. Biol. Res. Div., San Diego, La Jolla, CA 92093, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1986. vol. 93, no. 1, pp. 103-110 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Incl. 44 ref. PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The gonads of sea urchins undergo large changes in mass during their gametogenic cycle, and have relatively low aerobic capacities and are poorly perfused by the circulatory system and thus are continually hypoxic or anoxic. The present study of Strongylocentrotus droebachiensis investigates seasonal changes inthe relationships among mass of the ovaries. pH and P sub(O2) of the perivisceral coelomic fluid which bathes the ovaries, and partitioning of ovary energy metabolism into its anaerobic and aerobic components. Ovaries from S. droebachiensis have the capacity to produce large amounts of lactate under imposed anoxia, but lactate accounts for only 37% of the total anoxic heat dissipation, which suggests that other end products of anaerobiosis are present. Seasonal changes in pH and P sub(O2) of the perivisceral coelomic fluid can be explained by a complex relationship among changes in temperature, reproductive condition, and anaerobic and aerobic metabolism in the ovaries, gut and body wall. Seasonal changes in the buffering capacity of the perivisceral coelomic fluid must be determined before the effects of respiratory and metabolic acid production on the acid-base status of the coelomic fluid can be fully understood. DESCRIPTORS: energy-transfer; ovaries-; gametogenesis-; oxygen-consumption; coelomic -fluids; respiration-; Strongylocentrotus-droebachiensis; animal -metabolism; seasonal-variations CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244; Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1776535 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 159 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Diversity, patterns of adaptation, and stability of Nova Scotian kelp beds. AUTHOR(S): Johnson,-C.R.; Mann,-K.H. AUTHOR AFFILIATION: Australian Inst. Mar. Sci., PMB No. 3, Townsville MC, Qld. 4810, Australia SOURCE (BIBLIOGRAPHIC CITATION): ECOL.-MONOGR. 1988. vol. 58, no. 2, pp. 129-154 PUBLICATION YEAR: 1988 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: There are two alternate community states in the rocky subtidal of the Atlantic coast of Nova Scotia, an unproductive sea urchin/coralline alga community, and highly productive kelp beds dominated by Laminaria longicruris . Disease-induced mortality of the sea urchins (Strongylocentrotus droebachiensis ) triggered a switch from the first state to the second and provided a unique opportunity to study (1) the ability of L. longicruris to recover its former dominant status, and (2) its stability when competing with other seaweeds and when perturbed by storms and grazers other than urchins. Rates of recolonization of L. longicruris depended on the proximity of a refugial source of spores. DESCRIPTORS: community-structure; population-stability; adaptations-; Canada,-Nova -Scotia,-Atlantic-Coast; kelp-forests; zoobenthos-; biocenosis-; competition-; dominant-species; Laminaria-longicruris; Strongylocentrotus -droebachiensis; grazing-; ANW,-Canada,-Nova-Scotia, IDENTIFIERS: kelp-beds CLASSIFICATIONS: Aquatic-Communities:-Habitat-community-studies-1463 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1768356 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 160 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Sea urchin outbreaks nematode epizootics in Vestfjorden, northern Norway. AUTHOR(S): Hagen,-N.T. AUTHOR AFFILIATION: Inst. Fish. and Aquacult., Nordland Coll., P.O. Box 6003, N-8016 Moerkved -Bodoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): SARSIA. 1987. vol. 72, no. 3-4, pp. 213-229 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Large-scale overgrazing of kelp beds by the green sea urchin, Strongylocentroutus droebachiensis O.F. Mueller, has recently occurred off the coast of northern Norway. Overgrazed "Isoyake" bottoms dominated by crustose coralline algae and sea urchins have persisted for more than five years in the Vestfjord area, although decreased urchin populations and localized macrophyte recovery were observed at two nearby sites in September 1984. The adult stages of a recently discovered ovoviviparous nematode endoparasite, Echinomermella matsi Jones & Hagen, often occupied a large portion of the perivisceral coelom of infected specimens of S. droebachiensis . No parasites were found in the co-occurring sea urchins Echinus esculentus L. and S. pallidus G.O. Sars, suggesting that E. matsi exhibits a high degree of host specificity. DESCRIPTORS: epizootics-; Norway,-Vestfjord; epizoites-; population-number; Strongylocentrotus-droebachiensis; Echinomermella-matsi; ANE,-Norway, -Vestfjord IDENTIFIERS: outbreaks- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) ACCESSION NUMBER: 1768132 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 161 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Development of the nervous system of the pluteus larva of Strongylocentrotus droebachiensis . AUTHOR(S): Bisgrove,-W.; Burke,-R.D. AUTHOR AFFILIATION: Dep. Biol., Univ. Victoria, Victoria, B.C. V8W 2Y2, Canada SOURCE (BIBLIOGRAPHIC CITATION): CELL-TISSUE-RES. 1987. vol. 248, no. 2, pp. 335-343 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The authors describe the development of three components of the larval nervous system of Strongylocentrotus droebachiensis using indirect immunofluorescence and glyoxylic acid-induced fluorescence. Each component appears early in development as a small number of cells and continues to increase in complexity throughout larval development. DESCRIPTORS: development-; nervous-system; developmental-stages; Strongylocentrotus -droebachiensis; neurotransmitters- IDENTIFIERS: distribution- CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1750411 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 162 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Survey of shallow benthic habitat: Eastern shore and Cape Breton, Nova Scotia. AUTHOR(S): Moore,-D.S.; Miller,-R.J.; Meade,-L.D. CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Halifax, N.S. (Canada) SOURCE (BIBLIOGRAPHIC CITATION): CAN.-TECH.-REP.-FISH.-AQUAT.-SCI. 1986. no. 1546, 54 pp PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: During 1984-85, 2,000 km of the Nova Scotia coast from Ship Harbour to (Strongylocentrotus droebachiensis ) Bay St. Lawrence were surveyed to determine the area of habitat sea urchins and seaweeds share, sea urchin size frequencies and biomass, the extent of sea urchin mass mortalities, the extent of colonization by seaweeds, the physical characteristics of the habitat, and summer-autumn temperature regimes. A previous survey in 1982 provided similar data for 2,900 km of Nova Scotia coast from Cape Sable Island to Ship Harbour. Recent mass mortalities of sea urchins were a major ecological event worth documenting as a case history, and as a baseline for comparing future changes in sea urchins, seaweeds, and associated commercially important species. DESCRIPTORS: environmental-surveys; benthic-environment; habitat-; ecological -associations; seaweeds-; interspecific-relationships; Strongylocentrotus -droebachiensis; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483; Aquatic-Communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1730847 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 163 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Application of the sea urchin sperm bioassay to sewage treatment efficiency and toxicity in marine waters. AUTHOR(S): Dinnel,-P.A.; Stober,-Q.J. AUTHOR AFFILIATION: Fish. Res. Inst., Univ. Washington, Seattle, WA 98195, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ENVIRON.-RES. 1987. vol. 21, no. 2, pp. 121-133 INTERNATIONAL STANDARD NUMBERS: ISSN 0141-1136 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A newly standarized 60-minute sea urchin (and sand dollar) sperm bioassay was used to measure the toxicity of sewage at each stage in the treatment process. The sensitivity of the sperm bioassay was compared to the results of 48- to 96-hour bioassays with sea urchin and oyster embryos and crab zoeae in side-by-side tests of each sewage type. These data were then used to estimate the dilutions necessary to protect sensitive life stages of marine animals around a proposed sewage outfall in Puget Sound and to select the best bioassay procedure for a post-discharge program for monitoring water column toxicity. Results showed that very little acute toxicity was removed by the primary treatment process but that toxicity was greatly reduced by secondary treatment. A high degree of toxicity was reintroduced by chlorination but this source of toxicity was essentially eliminated by dechlorination. DESCRIPTORS: bioassays-; sewage-treatment; toxicity-tests; pollution-monitoring; Dendraster-excentricus; Strongylocentrotus-droebachiensis; Crassostrea -gigas; cancer-magister CLASSIFICATIONS: Pollution:-Methods-and-instruments-1502; Pollution:-Methods-and-instruments -2442 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1); Ocean-Technology,-Policy-and -Non-Living-Resources (Q2) ACCESSION NUMBER: 1669425 LIBRARY HOLDINGS MESSAGE: Connect to all available issues of this title online; UW restricted; http://www.sciencedirect.com/science/journal/01411136 Connect to the latest 9 months of this title online; UW restricted; http://www.sciencedirect.com/web -editions?_ob=JournalURL&_cdi=5843&_auth=y&_acct=C000021514&_version=1&_urlVersion=0&_userid=450576&md5=eca8b843322c018889427f17c20dfc62&sb=y See records of latest issues received http://catalog.lib.washington.edu/record=b2059612 Location: Available Online Location: Available Online Location: Fish-Ocean Stacks -- Call number: GC1 .M345 -- LIB HAS: v.1- (July 1978-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Call number: GC1 .M345 -- LIB HAS: v. 1-7 (July 1978-1982) Record 164 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Recruitment and growth of the sea urchin Strongylocentrotus droebachiensis (Muller) following mass mortalities off Nova Scotia, Canada. AUTHOR(S): Raymond,-B.G.; Scheibling,-R.E. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1987. vol. 108, no. 1, pp. 31-54 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Recruitment of Strongylocentrotus droebachiensis was monitored for 4 successive years following a mass mortality of this species on a subtidal boulder bottom in St. Margaret's Bay, Nova Scotia. Recently recruited juveniles (1-2 mm diameter) were observed in the fall (September-November) between 1982 and 1984, but not in 1985. juveniles grew to 6-8 mm diameter at 1-yr post-settlement and 19 mm diameter (1983 cohort) at 2-yr post -settlement. Individuals > 18 mm diameter had macroscopic gonads in the spring of their third year and spawning probably occurred at 2.75-yr post -settlement. The growth rate of juveniles (3-6 mm initial diameter) maintained in cages with coralline-covered rock was similar to that of the natural population. DESCRIPTORS: Canada,-Nova-Scotia-Coast; recruitment-; growth-rate; mortality-; growth-; Strongylocentrotus-droebachiensis; ANW,-Canada,-Nova-Scotia,-St.-Margaret' -s-Bay; juveniles- CLASSIFICATIONS: Population-Studies:-Population-dynamics-1442 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1665584 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 165 of 241 in ASFA 1988-1996 TITLE (ENGLISH): The fate of chemically dispersed and untreated crude oil in Arctic benthic biota. AUTHOR(S): Humphrey,-B.; Boehm,-P.D.; Hamilton,-M.C.; Norstrom,-R.J. AUTHOR AFFILIATION: Seakem Oceanography Ltd., 2045 Mills Rd., Sidney, B.C. V8L 3S1, Canada SOURCE (BIBLIOGRAPHIC CITATION): ARCTIC. 1987. vol. 40, no. suppl. 1, pp. 149-161 NOTES: Special issue: Baffin Island Oil Spill (BIOS) Project. PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Subtidal benthic biota were monitored for petroleum hydrocarbons following two experimental oil spills at Cape Hatt, N.W.T., Canada. In one spill oil was chemically dispersed into the water column, and in the other oil was released onto the water surface and allowed to strand on the shoreline. In addition to baseline samples, samples were collected immediately after the oil releases, two to three weeks after and one and two years after. Initial observations did not distinguish between effects of the surface and dispersed releases. Total oil content and hydrocarbon compositional analyses were conducted to investigate patterns of uptake and depuration for five different arctic species: Astarte borealis, Macoma calcarea, Mya truncata, Serripes groenlandicus and Strongylocentrotus droebachiensis . Filter-feeding species took up oil rapidly from the water column, while deposit-feeding species took up oil less rapidly from the sediments. All species depurated most of the oil after one year, but after two years the deposit feeders appeared to be taking up more oil from sediments contaminated by stranded oil from the surface oil release. DESCRIPTORS: crude-oil; oil-spills; dispersants-; benthos-; experimental-research; Baffin-I.,-Cape-Hatt; biocenoses-; research-programs; research-and -development; Canada,-Northwest-Territories,-Baffin-I.; marine-organisms; Invertebrata-; ANW,-Baffin-I.,-Cape-Hatt IDENTIFIERS: fate-; BIOS- CLASSIFICATIONS: Pollution:-Effects-on-organisms-1504 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1659070 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 166 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Subtidal coexistence: Storms, grazing, mutualism, and the zonation of kelps and mussels. AUTHOR(S): Witman,-J.D. AUTHOR AFFILIATION: Mar. Sci. Cent., Northeastern Univ., East Point, Nahant, MA 01908, USA SOURCE (BIBLIOGRAPHIC CITATION): ECOL.-MONOGR. 1987. vol. 57, no. 2, pp. 167-187 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: At exposed sites in the Gulf of Maine, USA, subtidal mussels (Modiolus modiolus ) dominated space on upper rock surfaces at intermediate depths (11-18 m), but not at shallow depths (4-8 m), where dominants were the kelps Laminaria digitata and L. saccharina . Observations and experiments were conducted to test the following hypotheses about factors limiting the vertical (depth) zonation of mussels and kelp: (1) that the upward distribution of Modiolus is limited by interference effects of kelp, or (2) that it is limited by the failure of larval recruitment to shallow depths, and (3) that sea urchin grazing controls the downward distribution of kelp. The recruitment failure hypothesis was rejected. Results indicated that storm-generated dislodgement of mussels overgrown by kelp was the mechanism reducing the ability of Modiolus to maintain and hold space in the shallow kelp zone. DESCRIPTORS: grazing-; mutualism-; coexistence-; zonation-; coastal-zone; Maine-Gulf; Strongylocentrotus-droebachiensis; ecological-zonation; storms-; symbiosis -; Modiolus-modiolus; Laminaria-digitata; Laminaria-saccharina; ANW,-Maine -Gulf CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1658608 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 167 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Effects of experimental releases of oil and dispersed oil on Arctic nearshore macrobenthos. 2. Epibenthos. AUTHOR(S): Cross,-W.E.; Martin,-C.M.; Thomson,-D.H. AUTHOR AFFILIATION: LGL Ltd., 22 Fisher St., P.O. Box 280, King City, Ont. L0G 1K0, Canada SOURCE (BIBLIOGRAPHIC CITATION): ARCTIC. 1987. vol. 40, no. suppl. 1, pp. 201-210 NOTES: Special issue: Baffin Island Oil Spill (BIOS) Project. PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: An experimental subsurface of chemically dispersed oil at Cape Hatt, northern Baffin Island, resulted in short-term relatively high oil concentrations in the waters of two adjacent bays, whereas untreated oil released onto the surface of a third bay could not be detected in the water below a depth of 1 m. The only immediate response in epibenthos observed by divers was narcosis in urchins and starfish following the dispersed oil release. Analysis of data from in situ counts in the three test bays and in a fourth (reference) bay during the open water seasons of 1980-83 showed that densities of the starfish Leptasterias polaris were not affected by either oil release and that effects on urchin densities were minor or transitory: Strongylocentrous droebachiensis apparently made immediate and transitory attempts to avoid dispersed oil in the water and possibly tried to avoid untreated and dispersed oil in sediments two years after oiling. DESCRIPTORS: oil-; marine-environment; marine-fauna; Canada,-Northwest-Territories, -Baffin-I.; coastal-environments; benthos-; oil-pollution; pollution -effects; oil-spills; Leptasterias-polaris; Strongylocentrotus -droebachiensis; ANW,-Baffin-I.,-Cape-Hatt IDENTIFIERS: effects-on; BIOS- CLASSIFICATIONS: Pollution:-Effects-on-organisms-1504 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1647162 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 168 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Ocean pout (Macrozoarces americanus (Bloch and Schneider) (Pisces: Zoarcidae)) predation on green sea urchins (Strongylocentrotus droebachiensis (O.F. Mull.) (Echinodermata: Echinoidea)) in eastern Newfoundland. AUTHOR(S): Keats,-D.W.; Steele,-D.H.; South,-G.R. AUTHOR AFFILIATION: Dep. Biol., Memorial Univ. Newfoundland, St. John's, Nfld. A1B 3X9, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-ZOOL.-J.-CAN.-ZOOL. 1987. vol. 65, no. 6, pp. 1515-1521 PUBLICATION YEAR: 1987 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The diet of ocean pout was studied by analysis of the contents of the gastrointestinal tracts of 151 individuals collected from the green sea urchin dominated rocky subtidal in eastern Newfoundland. Green sea urchins constituted 62% of the overall diet by weight. The brittle star, Ophiopholus aculeata , constituted 7% of the diet, while the remainder was miscellaneous invertebrates and fish (mainly capelin and billfish). From April to July, when the fish are inshore and feeding, before breeding, the average ocean pout contained 56.3 g of urchins. This is a biomass of urchins equivalent to that in 0.106 m super(2) of the middle of the urchin -dominated zone. A density of one ocean pout pair per 8.6 m super(2) would be required to completely consume the mean biomass (532 g m super(-2)) of urchins present in the urchin-dominated zone in one season. DESCRIPTORS: Canada,-Newfoundland-Coast; predation-; diets-; biomass-; food-consumption; Macrozoarces-americanus; Strongylocentrotus-droebachiensis; food -organisms; ANW,-Canada,-Newfoundland CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1635591 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 169 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Atlantic wolffish (Anarhichas lupus L.; Pisces: Anarhichidae) predation on green sea urchins (Strongylocentrotus droebachiensis (O.F. Mull.); Echinodermata: Echinoidea) in eastern Newfoundland. AUTHOR(S): Keats,-D.W.; Steele,-D.H.; South,-G.R. AUTHOR AFFILIATION: Dep. Biol., Memorial Univ. Newfoundland, St. John's, Nfld. A1B 3X9, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-ZOOL.-J.-CAN.-ZOOL. 1986. vol. 64, no. 9, pp. 1920-1925 PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The diet of the Atlantic wolffish was studied by examining the contents of the gastrointestinal tracts of 90 individuals collected from the sea urchin dominated rocky subtidal in eastern Newfoundland. Green sea urchins comprised 75% of the overall diet by weight. Horse mussels ranked second but comprised only 9.5% of the diet. The remainder of the diet consisted of several species of invertebrates and fish. The average (over the whole season) wolffish contained 120 g of urchins, equivalent to the biomass of urchins on 0.23 m super(2) in the middle of the urchin-dominated zone. Based on these figures, a density of 1 wolffish pair per 20 m super(2) would be required to consume the mean biomass (532 g m super(-2)) of urchins present in the urchin-dominated zone in 1 year. DESCRIPTORS: Canada,-Newfoundland; diets-; predation-; biomass-; population-density; stomach-content; food-consumption; Anarhichas-lupus; Strongylocentrotus -droebachiensis; ANW,-Canada,-Newfoundland CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1634787 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 170 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Comparative morphometrics of echinoderm larvae. 2. Larval size, shape, growth, and the scaling of feeding and metabolism in echinoplutei. AUTHOR(S): McEdward,-L.R. AUTHOR AFFILIATION: Dep. Zool., Univ. Alberta, Edmonton, Alta. T6G 2E9, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1986. vol. 96, no. 3, pp. 267-286 PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The relationships among egg size, larval growth and form, and the functional consequences of larval form, (e.g. the changing relationship between ciliated band length and metabolic activity) were compared among four co-occurring echinoids, Strongylocentrotus droebachiensis, S. franciscanus, S. purpuratus and Dendraster excentricus . Development time from fertilization to the formation of the echinus rudiment, just prior to metamorphic competence, was inversely related to egg volume. Egg sizes spanned a 6-fold range in volume, corresponding to a doubling of development duration. In general, the initial differences in larval size and shape that are related to egg size do not persist throughout development. During the period of arm formation, ciliated band length scaled with strong positive allometry with respect to body length. The allometric exponents ranged from 2.7 to 3.4 and were positively related to egg size. Species with larger eggs have greater inherent capability for increasing the size of feeding structures relative to support structures during growth. The scaling of feeding capability with respect to metabolic activity was positively related to egg size. DESCRIPTORS: invertebrate-larvae; morphometry-; animal-metabolism; larval-development; feeding-; proteins-; comparative-studies; Echinoidea- CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1633856 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 171 of 241 in ASFA 1988-1996 TITLE (ENGLISH): Comparative morphometrics of echinoderm larvae. 1. Some relationships between egg size and initial larval form in echinoids. AUTHOR(S): McEdward,-L.R. AUTHOR AFFILIATION: Dep. Zool., Univ. Washington, Seattle, WA 98195, USA SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1986. vol. 96, no. 3, pp. 251-265 PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Egg protein content, and presumably total content (parental investment), was linearly related to egg volume among seven species of echinoids with planktotrophic larval development: Strongylocentrotus droebachiensis, S. purpuratus, S. franciscanus , Dendraster excentricus, Heterocentrotus mammillatus, Colobocentrotus atratus and Tripneustes gratilla Initial size and feeding capability, at the 2-armed and 4-armed pletus stages, were positively correlated egg size. The complexity of larval shape, as ciliated band length or total arm length relative to body length, was independent of egg size. Initial feeding efficiency, defined as the ratio of feeding capability to larval respiratory electron transport system (ETS) activity, was inversely related to egg size. Important differences in the egg size and larval form relationships were observed the different echinoid families and between geographic regions. DESCRIPTORS: invertebrate-larvae; eggs-; morphometry-; proteins-; life-history; Echinoidea-; comparative-studies CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1633835 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 172 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Population biology of green sea urchins on rocky barrens. AUTHOR(S): Himmelman,-J.H. AUTHOR AFFILIATION: Dep. Biol. et Groupe Interuniv. Rech. Oceanogr. Quebec, Univ. Laval, Ste. -Foy, Que. G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER.. 1986. vol. 33, no. 3, pp. 295-306 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Incl. 48 ref. PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ABSTRACT: Populations of the sea urchin Strongylocentrotus droebachiensis in highly grazed rocky barrens in eastern Newfoundland were sampled quantitatively in summer 1968. Comparisons among populations at an extremely exposed, a moderately exposed and a protected site show differences in recruitment and/or juvenile survival, mortality and growth which may be caused by differences in temperature, wave exposure and food availability. Dense populations have an unusual growth pattern. It is hypothesized that the slow growth of juvenile urchins in dense populations is due to severe food shortage coupled to their low mobility. Increased growth rate may be due to mobility and resultant greater access to food. If any of the larger actively foraging urchins were to die they would be replaced by the ever abundant juveniles, thus assuring the persistence of urchin-dominated barrens. DESCRIPTORS: population-dynamics; growth-; size-distribution; food-availability; Strongylocentrotus-droebachiensis; ecological-distribution; ANW,-Canada, -Newfoundland,-Avalon-Peninsula CLASSIFICATIONS: Population-Studies:-Population-dynamics-1442 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1601175 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 173 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Micromere-specific cell surface proteins of 16-cell stage sea urchin embryos. AUTHOR(S): de-Simone,-D.W.; Spiegel,-M. AUTHOR AFFILIATION: Dep. Biol. Sci., Dartmouth Coll., Hanover, NH 03755, USA SOURCE (BIBLIOGRAPHIC CITATION): EXP.-CELL-RES. 1985. vol. 156, no. 1, pp. 7-14 PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Evidence is presented of cell-type specificity of surface proteins from the 16-cell stage sea urchin embryo. The protein composition of the micromere cell surface has been examined by super(125)I labelling of intact cells followed by SDS-PAGE. In Arbacia punctulata , four high molecular weight (HMW) proteins are detected on the surface of isolated micromeres -- but not on mesomere-macromere fractions. In Strongylocentrotus droebachiensis , a micromere-specific protein of 133 K molecular weight (MW) was identified. This 133 K protein binds to wheat germ agglutinin (WGA) but not to concanavalin A (conA). Lectin binding was studied using a new technique. The procedure involves the separation, by SDS-PAGE, of iodinated cell-surface proteins followed by their electrophoretic transfer to lectin-coated nitrocellulose membranes. DESCRIPTORS: embryos-; proteins-; cell-surface; Arbacia-punctulata; Strongylocentrotus -droebachiensis IDENTIFIERS: purification- CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1454735 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 174 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Refuges, biological disturbance, and rocky subtidal community structure in New England. AUTHOR(S): Witman,-J.D. AUTHOR AFFILIATION: Mar. Sci. and Mar. Stud. Cent., Northeastern Univ., East Point, Nahant, MA 01908, USA SOURCE (BIBLIOGRAPHIC CITATION): ECOL.-MONOGR. 1985. vol. 55, no. 4, pp. 421-445 PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The effects of two sources of biological disturbance--predation and sea urchin grazing--on the structure of benthic communities inside and outside beds of the horse mussel, Modiolus modiolus , were examined in the rocky subtidal zone off the Isles of Shoals, New Hampshire, USA. Multivariate analysis revealed three major communities between 8 and 30 m in depth: (1) a Modiolus community; (2) a 30 m community; and (3) and 8-18 m community. The hypothesis that Modiolus beds provide a refuge from predation for the associated community was tested in five manipulative field experiments. The sea urchin Strongylocentrotus droebachiensis was the most significant agent of biological disturbance during the 1979-1984 study period. Long -term photographic monitoring of marked mussel beds at 8, 18, and 30 m depth showed that Modiolus beds at all depths persisted for more than 5 yr. DESCRIPTORS: USA,-New-Hampshire; coastal-environments; predation-; grazing-; community -structure; Modiolus-modiolus; ecological-zonation; interspecific -relationships; rocky-shores; ANW,-USA,-New-Hampshire,-Isles-of-Shoals IDENTIFIERS: effects-on; communities- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1440828 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 175 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Petaloid/filopidal coelomocytes of the green sea urchin, Strongylocentrotus droebachiensis . AUTHOR(S): Edds,-K.T. AUTHOR AFFILIATION: Dep. Anat. Sci., Sch. Med., Buffalo, NY 14214, USA SOURCE (BIBLIOGRAPHIC CITATION): BLOOD-CELLS-OF-MARINE-INVERTEBRATES.-EXPERIMENTAL-SYSTEMS-IN-CELL-BIOLOGY -AND-COMPARATIVE-PHYSIOLOGY. Cohen,-W.D.-ed. 1985. vol. 6 pp. 266-267 INTERNATIONAL STANDARD NUMBERS: ISBN 0-8451-2205-3 SERIES TITLE/INFORMATION: MBL-LECT.-BIOL. vol. 6 PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: An account is given of the laboratory maintenance of Strongylocentrotus droebachiensis , the removal of coelomic fluid and the preparation of petaloidy filopodial cells for experimental use. Sources of the species and other usable urchin species are included. DESCRIPTORS: hematology-; blood-cells; experimental-culture; marine-invertebrates; coelomic-fluids; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1424215 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 176 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Experimental evaluation of aggregation behavior in the sea urchin Strongylocentrotus droebachiensis . A reinterpretation. AUTHOR(S): Vadas,-R.L.; Elner,-R.W.; Garwood,-P.E.; Babb,-I.G. AUTHOR AFFILIATION: Univ. Maine, Dep. Bot. and Plant Pathol., Orono, ME 04469, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1986. vol. 90, no. 3, pp. 433-448 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Incl. 60 ref. PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Defensive aggregation by S. droebachiensis has been invoked as the fulcrum for the transformation of macroalgal beds into coralline barrens in the northwest Atlantic. The authors examined some of the mechanisms contributing to aggregation behavior by experimentally manipulating sea urchins, purported predators and food during autumn 1983 and spring 1984 both in the laboratory and field. They utilized several approaches to examine a range of sea urchin responses to the presence of food, tethered predators, caged predators, crushed conspecifics in the field and predators in laboratory tanks. Two types of seaurchin groupings were delineated: (1) surficial two dimensional associations, often caused by topographic or other features which inhibited dispersal and (2) cohesive three-dimensional aggregations induced by food. DESCRIPTORS: organism-aggregations; protective-behavior; population-factors; predation-; feeding-behavior; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Autecology:-Behavior-1423 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1424111 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 177 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The importance of plant defence abilities to the structure of subtidal seaweed communities: The kelp Laminaria longicruris de la Pylaie survives grazing by the snail Lacuna vincta (Montagu) at high population densities. AUTHOR(S): Johnson,-C.R.; Mann,-K.H. AUTHOR AFFILIATION: Dep. Fish. and Oceans, Mar. Ecol. Lab., Bedford Inst. Oceanogr., P.O. Box 1006, Dartmouth, N.S. B2Y 4A2, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1986. vol. 97, no. 3, pp. 231-267 PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Following mass mortalities of sea urchins, Strongylocentrotus droebachiensis (Mueller), in the rocky subtidal of the Atlantic coast of Nova Scotia, dense seaweed beds dominated by the canopy-forming kelp Laminaria longicruris de la Pylaie developed for the first time in several years. The numerically abundant grazers in the seaweed beds when sea urchins were rare were the mesogastropod Lacuna vincta (Montagu), the limpet Notoacmaea testudinalis (Mueller), and the chiton Tonicella rubra (Linne). The authors suggest that the pattern of Lacuna grazing on Laminaria is governed by the distribution of anti-herbivore chemicals in the plants, and variations in the toughness and nutritional quality of different regions of the plant. Avoidance of the intercalary meristem correlates with high levels of polyphenols in this area. Polyphenol concentration is uniformly low throughout the rest of the plant. The distribution of snail grazing on the stipe and holdfast, and central and lateral portions of the lamina correlates with the toughness and nutritional quality of these parts. DESCRIPTORS: herbivory-; defensive-mechanisms; food-plants; Canada,-Nova-Scotia-Coast; defense-mechanisms; herbivores-; Laminaria-longicruris; Lacuna-vincta; grazing-; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1373987 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 178 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The ecology of fertilization of echinoid eggs: The consequences of sperm dilution, adult aggregation, and synchronous spawning. AUTHOR(S): Pennington,-J.T. AUTHOR AFFILIATION: Dep. Zool., Univ. Alberta, Edmonton, Alta. T6G 2E9, Canada SOURCE (BIBLIOGRAPHIC CITATION): BIOL.-BULL.-MAR.-BIOL.-LAB.-WOODS-HOLE. 1985. vol. 169, no. 2, pp. 417-430 PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Percent fertilization of eggs of the echinoid Strongylocentrotus droebachiensis (0.F. Mueller) was determined both in laboratory and field experiments. In the laboratory, over 50% of the eggs were fertilized only in relatively dense sperm suspensions (> 10 super(6) sperm/l); such suspensions retained their potency for less than 20 minute. In the field, divers induced individual S. droebachiensis) to spawn with KCl injections. Along five meter transects running directly downcurrent from spawning males, fixed volumes of seawater presumably containing sperm were drawn into syringes already containing eggs. Within 20 cm of spawning males 60 -95% fertilization usually occurred: at distances greater than 20 cm less than 15% of the eggs were fertilized. Higher percentages of eggs were fertilized when current speeds were low (< 0.2 m/s); swifter currents quickly diluted sperm so that little fertilization occurred. DESCRIPTORS: fertilization-; spawning-behavior; aggregation-behavior; ecology-; spawning -; behavior-; biological-fertilization; Strongylocentrotus-droebachiensis; eggs- IDENTIFIERS: ecological-evaluation CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1199854 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 179 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Increased macroalgal abundance following mass mortalities of sea urchins (Strongylocentrotus droebachiensis ) along the Atlantic coast of Nova Scotia. AUTHOR(S): Scheibling,-R. AUTHOR AFFILIATION: Biol. Dep., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): OECOLOGIA. 1986. vol. 68, no. 2, pp. 186-198 PUBLICATION YEAR: 1986 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Recurrent outbreaks of disease between 1980 and 1983 caused catastrophic mortality of sea urchins (>260,000 t fresh weight) along 280 km (straight line distance) of the Atlantic coast of Nova Scotia. Macroalgal communities in areas where sea urchins died off 1, 3 and 4 years previously are compared to existing sea urchin-dominated barren grounds and to a mature kelp bed without sea urchins. Changes in macroalgal cover and species composition, and increases in biomass, density and size of kelp (Laminaria ) species, characterize the succession from barren grounds to 3- and 4-year-old kelp beds. The greatest change occurred between one and three years following sea urchin mass mortality. Within 3 years, kelp beds attained a level of biomass (7.6 kg m super(-2)) comparable to that of mature beds. DESCRIPTORS: Canada,-Nova-Scotia-Coast; biomass-; species-composition; mortality-; plant -populations; coastal-waters; community-structure; marine-invertebrates; population-growth; algae-; Strongylocentrotus-droebachiensis; Laminaria- IDENTIFIERS: abundance-; ANW,-Canada,-Nova-Scotia; population-dynamics; environmental -effects CLASSIFICATIONS: Autecology:-Environmental-effects-1422 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1199717 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 180 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Depth-dependent reproductive output of the green sea urchin, Strongylocentrotus droebachiensis (O.F. Mueller), in relation to the nature and availability of food. AUTHOR(S): Keats,-D.W.; Steele,-D.H.; South,-G.R. AUTHOR AFFILIATION: Biol. Dep., Memorial Univ. Newfoundland, St. John's, Nfld. A1B 3X9, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1984. vol. 80, no. 1, pp. 77-91 PUBLICATION YEAR: 1984 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Reproductive output of green sea urchins (S. droebachiensis ) in the field was highest at depths where preferred macro-algae were abundant, and lowest at depths where preferred macro-algae were overgrazed or replaced by non-preferred species (Agarum and Ptilota ). Feeding rate and gonad indices of sea urchins in the laboratory were highest on a diet of preferred algae (Fucus distichus L. subsp. edentatus (Pyl.) Powell, Laminaria longicruris Pyl., Desmarestia spp. and Saccorhiza dermatodea (Pyl.) J. Ag.), and lowest on the less preferred Agarum cribrosum (Mert.) Bory, Ptilota serrata Kuetz., and crustose corallines. Gamete production/unit area in overgrazed habitats was as great or greater than in kelp beds because of the higher biomass of urchins in overgrazed areas. Gonad weight and reproductive output of urchins from habitats poor in food can be increased by providing preferred foods. DESCRIPTORS: food-preferences; food-availability; fecundity-; Strongylocentrotus -droebachiensis CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1123826 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 181 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Seaweeds, sea urchins, and lobsters: A reappraisal. AUTHOR(S): Miller,-R.J. AUTHOR AFFILIATION: Halifax Fish. Res. Lab., Dep. Fish. and Oceans, P.O. Box 550, N.S. B3J 2S7, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-FISH.-AQUAT.-SCI. 1985. vol. 42, no. 12, pp. 2061-2072 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A popular hypothesis, that on the south of Nova Scotia the green sea urchin (Strongylocentrotus droebachiensis ) has been released from control by predators, is critically reviewed. Predator control is given the functional definition of limiting sea urchin grazing sufficient to permit abundant growth of seaweed. Of the predactors identified, the American lobster (Homarus americanus ) is the least likely to have been important in sea urchin control in recent decades. Feeding rates, stomach contents, and field biomass are available for this species. A smaller amount of data available for the rock crab (Cancer irroratus ) and benthic feeding fish points to the conslusion that they likewise cannot control urchin populations. The formation of sea urchin grazing fronts, a usual step in the destruction of seaweed beds, has been explained as a behavioral response to predators. This may in fact be merely a response to the location of food. DESCRIPTORS: interspecific-relationships; seaweeds-; Homarus-americanus; Strongylocentrotus-droebachiensis; Cancer,irroratus-; predation-; grazing -; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1090674 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 182 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Paramoeba invadens n. sp. (Amoebida, Paramoebidae), a pathogenic amoeba from the sea urchin, Strongylocentrotus droebachiensis , in eastern Canada. AUTHOR(S): Jones,-G.M. AUTHOR AFFILIATION: Seatech Ltd., P.O. Box 2161, Stn. M, Halifax, N.S. B3J 3C4, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-PROTOZOOL. 1985. vol. 32, no. 4, pp. 564-569 PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Paramoeba invadens n.sp. is described from sea urchin tissues and from culture. Amoebae are 20-40 mu m in length with an irregular hyaline region producing short subpseudopodia. One parasome per cell is present. The parasome is bipolar with basophilic, Feulgen-positive poles and a Feulgen-negative median segment. The fine structure parasome resembles those in other species of Paramoeba and the surface of the amoeba is plain with no hairs or scales. Amoebae dislodged from tissues often adopt a semifloating from; floating forms have been in culture. Amoebae circulate within lumina of the water vascular system and can migrate readily into or out of tissues. DESCRIPTORS: tissues-; pathogens-; Paramoeba-invadens; Strongylocentrotus -droebachiensis; ultrastructure-; ANW,-Canada IDENTIFIERS: isolation- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1081025 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 183 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Sea urchin pathogen: A possible tool for biological control. AUTHOR(S): Miller,-R.J. AUTHOR AFFILIATION: Dep. Fish. and Oceans, Halifax Fish. Res. Lab., P.O. Box 550, Halifax, N.S. B3J 2S7, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-ECOL.-PROG.-SER.. 1985. vol. 21, no. 1-2, pp. 169-174 INTERNATIONAL STANDARD NUMBERS: ISSN 0171-8630 NOTES: Incl. 28 refs. PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A sea urchin pathogen recently exerted great impact on the Nova Scotia near -shore community by releasing large areas of habitat to seaweed colonization and growth. The pathogen has promise for use as a tool for biological control because it is virulent, apparently species specific, can be maintained and transferred in the laboratory, and is waterborne. The purpose of this study was to demonstrate that it could be transferred from the laboratory to the field. This was accomplished in a reciprocal transplant experiment. Sea urchins (Strongylocentrotus droebachiensis ) from 2 sites 3.5 km apart were brought to the laboratory, one group was exposed to the disease-causing agent and the other served as control. Both groups were returned to the field but released at opposite sites. Sea urchins naturally occurring near the release of the exposed sea urchins developed disease symptoms within 4 wk; and by 8 wk when the temperature became too low for transfer of disease, diseased sea urchins were found as far as 120 m from the release site. No disease occurred at the control sites by 8 wk or in 5 additional areas within a few kilometers of the 2 release sites. DESCRIPTORS: biological-control; pathogens-; Strongylocentrotus-franciscanus; methodology-; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Pests-and-control-1485 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1026119 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted; http://www.int -res.com/journals/meps/index.html See records of latest issues received http://catalog.lib.washington.edu/record=b2050742 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH541.5 .S3 M273 -- LIB HAS: v.1- (July 1979-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine Ecology Progress Series -- Call number: QH541.5 S3 M273 -- LIB HAS: v.1- (July 1979 -),172(1979/1998)-175(1979/1998) Record 184 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Succession in sea urchin and seaweed abundance in Nova Scotia, Canada. AUTHOR(S): Miller,-R.J. AUTHOR AFFILIATION: Dep. Fish. and Oceans, Fish. Res. Lab., Halifax, N.S. B3J 2S7, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1985. vol. 84, no. 3, pp. 275-286 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 NOTES: Incl. 31 refs. PUBLICATION YEAR: 1985 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: From 1980 through 1983 sea urchin (Strongylocentrotus droebachiensis ) mass mortalities were at least 245,000 t. The habitat released to seaweed is expected to support a standing crop of 1.8 million tons and an annual production of 7 million tons. An extensive survey of 2,900 km of Nova Scotia shoreline revealed that 511 km super(2) of habitat (rock bottom less than 15 m deep) was available to seaweeds. Areas most exposed to ocean swells bordered 26% of the shoreline length but included 82% of the seaweed habitat. Before mass mortalities, seaweed refuges from sea urchin grazing included very sheltered habitats, very exposed habitats, and boulders set among shifting sand; however, these were less than 10% of the total habitat. In the 1 to 2 years following mass mortalities seaweed cover and occurrence increased significantly for all of five categories of wave exposure and for 6 of 7 algal taxa respectively. In at least 3 locations the sea urchin population began to recover as a result of a larval recruitment but in 1983 was again reduced by disease. DESCRIPTORS: ecological-succession; Strongylocentrotus-droebachiensis; mortality-; seaweeds-; ANW,-Canada,-Nova-Scotia IDENTIFIERS: biomass- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Productivity-1481 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 1024181 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 185 of 241 in ASFA 1978-1987 TITLE (ENGLISH): A horizontal gene transfer between sea urchin species?. AUTHOR(S): Busslinger,-M.; Rusconi,-S.; Rohrer,-U.; Birnstiel,-M.L. AUTHOR AFFILIATION: Inst. Molekularbiol. II, Univ. Zuerich, Hoenggerberg, CH-8093 Zuerich, Switzerland CONFERENCE INFORMATION: 35. Annual Symposium on Fundamental Cancer Research, Houston, TX (USA), 2-5 Mar 1982 SOURCE (BIBLIOGRAPHIC CITATION): PERSPECTIVES-ON-GENES-AND-THE-MOLECULAR-BIOLOGY-OF-CANCER. Robberson, -D.L.;Saunders,-G.F.-eds. 1983. pp. 107-124 INTERNATIONAL STANDARD NUMBERS: ISBN 0-89004-771-5 PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The presence of the DNA repeat h19 in Psammechinus , which so strongly resembles Nor5 of Strongylocentrotus droebachiensis , presents a challenge to evolutionary theory. The classical concepts of sequence change and conservation clearly are not sufficient to explain how the DNA sequences in DNA clone h19 and Nor5 could have escaped the random walk of evolution during the last 65 Myr or so. The authors' data can best be explained by a horizontal transfer of a histone gene unit from S. droebachiensis to P. miliaris in recent evolutionary times. Whether the presence of h19/Nor5 DNA in Psammechinus can be explained by classical concepts may be questioned. DESCRIPTORS: nucleotide-sequence; repeated-sequence; gene-transfer; genes-; genetics-; evolution-; nucleotides-; Psammechinus-; Strongylocentrotus-droebachiensis IDENTIFIERS: comparison-; horizontal- CLASSIFICATIONS: Invertebrate-Biology:-General:-Genetics-and-evolution-1245 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 1017415 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 186 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Community development following removal of urchins, Strongylocentrotus droebachiensis , from the rocky subtidal zone of the St. Lawrence Estuary, eastern Canada. AUTHOR(S): Himmelmann,-J.H.; Cardinal,-A.; Bourget,-E. AUTHOR AFFILIATION: Univ. Laval, Dep. Biol. and GIROQ, Quebec, G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): OECOLOGIA. 1983. vol. 59, no. 1, pp. 27-39 INTERNATIONAL STANDARD NUMBERS: ISSN 0029-8549 PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The role of sea urchins, S. droebachiensis , in structuring the rocky subtidal community was examined at Anse aux Basques on the north shore of the St. Lawrence Estuary, Quebec. All urchins larger than 10 mm in test diameter had been eliminated in the 20 x 20 m. experimental area. During the first month, a dense diatom cover developed, and during the second month the diatoms were overgrown by Ulvaria obscura . After four months (November) an Alaria esculenta overstory was present from near low water level to 3 m depth. Community development was much slower at greater depths. There was a dramatic increase in the number of species and abundance of algae and a marked increase in many animal species. DESCRIPTORS: ecological-succession; community-composition; Strongylocentrus -droebachiensis; grazing-; biomass-; vertical-distribution; Alaria -esculenta; Ulvaria-obscura; Bacillariophyceae-; Acmaea-testudinalis; Mytilus-edulis; Margarites-helicinus; Metridium-senile; ANW,-St.-Lawrence -Estuary CLASSIFICATIONS: Aquatic-Communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0912597 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00442/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2023889 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968-1999) Location: FriHarbor Periodicals -- Shelved by title: Oecologia -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968 -1999) Location: NatSci Periodicals -- Call number: QH540 .O32 -- LIB HAS: v.1- (1968-) -- LATEST ISSUES ON DISPLAY Record 187 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Mass mortality of Strongylocentrotus droebachiensis (Echinodermata: Echinoidea) off Nova Scotia, Canada. AUTHOR(S): Scheibling,-R.E.; Stephenson,-R.L. AUTHOR AFFILIATION: Dalhousie Univ., Biol. Dep., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1984. vol. 78, no. 2, pp. 153-164 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1984 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A mass mortality of S. droebachiensis , attributed to disease, was monitored in an echionid-dominated barren ground at Eagle head on the southwestern coast of Nova Scotia, Canada, in 1982. Recent mass mortalities in S. droebachiensis have occured in years of record high sea surface temperatures. The extent of mortality is correlated with the magnitude and duration of temperatures above a lower limit. DESCRIPTORS: fish-kill; temperature-effects; Strongylocentrotus-droebachiensis; population-density; seasonality-; environmental-diseases; experimental -research; kelps-; ANW,-Canada,-Nova-Scotia,-Eagle-Head IDENTIFIERS: colonization- CLASSIFICATIONS: Autecology:-Environmental-effects-1422 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0888192 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 188 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Echinoids, epizootics and ecological stability in the rocky subtidal off Nova Scotia, Canada. AUTHOR(S): Scheibling,-R.E. AUTHOR AFFILIATION: Dalhousie Univ., Biol. Dep., Halifax, NS B3H 4J1, Canada CONFERENCE INFORMATION: International Helgoland Symposium on Diseases of Marine Organisms, Helgoland (FRG), 11 Sep 1983 SOURCE (BIBLIOGRAPHIC CITATION): DISEASES-OF-MARINE-ORGANISMS. 1984. vol. 37, no. 1-4 pp. 233-252 INTERNATIONAL STANDARD NUMBERS: ISSN 0017-9957 SERIES TITLE/INFORMATION: HELGOL.-MEERESUNTERS. vol. 37, no. 1-4 NOTES: Includes 32 refs. PUBLICATION YEAR: 1984 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Mass mortalities of Strongylocentrotus droebachiensis , attributed to disease, have occurred along the Atlantic coast of Nova Scotia from 1980 to 1982. An amoeboid protist has been tentatively identified as the pathogenic agent. Temperature appears to play an important role in triggering epizootics and determining the extent of mortality. Epizootics have occurred in the autumn of each year during months of record high temperatures. The virtual elimination of echnoids over a large area of coast has enabled regeneration of kelp beds. Disease may play a key role in determining the structure and stability of benthic communities off Nova Scotia and elsewhere by controlling echinoid abundance. DESCRIPTORS: protozoan-diseases; Echinoidea-; Strongylocentrotus-droebachiensis; mortality-causes; temperature-effects; community-composition; ANW,-Canada, -Nova-Scotia IDENTIFIERS: predator-control CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0886986 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2004785 Location: Fish-Ocean Stacks -- Call number: QH301 .H4 -- LIB HAS: v. 1-32. (1937 -1979.) Location: FriHarbor Periodicals -- Call number: QH301 .H4 -- LIB HAS: v. 10-32. (1964-1979.) Record 189 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Reproductive cycle and gonad yield of green sea urchins in lower Cook Inlet, Alaska. AUTHOR(S): Paul,-J.M.; Paul,-A.J. SOURCE (BIBLIOGRAPHIC CITATION): 1984. 29 pp NOTES: NTIS Order No.: PB84-212489; Grant NA82AA-D-00044; NOAA-84062503. REPORT/PATENT NUMBERS: ASG-84-2 (ASG842) PUBLICATION YEAR: 1984 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The reproductive cycle of Stronglocentrotus droebachiensis , the green sea urchin, was monitored for one year in southern Kachemak Bay, lower Cook Inlet, Alaska. Gonad yields were relatively high from August through March. The gonads were firm and easily extracted from the test from August through October. In late November, male gonads were soft and leaked sperm when they were removed from the test. Female gonads remained firm and could be removed intact until January. The results of this one-year survey suggest that the harvesting period for green sea urchin roe in lower Cook Inlet is from September through November. DESCRIPTORS: reproductive-cycle; shellfish-fisheries; fishery-management; Strongylocentrotus-droebachiensis; INE,-USA,-Alaska,-Cook-Inlet CLASSIFICATIONS: Invertebrate-Biology:-General:-General-1241; Practical-Aspects-of -Fisheries:-Policy,-legislation,-and-sociology-1565 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 0871673 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 190 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Responses of the sea urchin Strongylocentrotus droebachiensis (O.F. Mueller) to water-borne stimuli from potential predators and potential food algae. AUTHOR(S): Mann,-K.H.; Wright,-J.L.C.; Welsford,-B.E.; Hatfield,-E. AUTHOR AFFILIATION: Mar. Ecol. Lab., Bedford Inst. Oceanogr., P.O. Box 1006, Dartmouth, N.S. B2Y 4A2, Canada SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1984. vol. 79, no. 3, pp. 233-244 PUBLICATION YEAR: 1984 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: At temperatures of 10-12 degree C the sea urchin Strongylocentrotus droebachiensis on 80% of the occasions tested, moved away from water that had passed over lobsters or crabs. At lower temperatures an increasing proportion of urchins remained inactive, but of those that were active 80% still moved away from the scent of predators. At 10-12 degree C a similar proportion moved towards water that has passsed over Laminaria , but at reduced temperatures a smaller proportion of the active urchins responded in this way. The attractant in Laminaria is an unstable, volatile hydrophobic compound with a low molecular weight. DESCRIPTORS: predators-; food-organisms; activity-patterns; Laminaria-; metabolites-; chemical-perception; chemoreception-; water-temperature; olfaction-; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Autecology:-Environmental-effects-1422 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0851905 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 191 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Predation by rock crabs (Cancer irroratus ) on diseased sea urchins (Strongylocentrotus droebachiensis ) in Nova Scotia. AUTHOR(S): Scheibling,-R. AUTHOR AFFILIATION: Dep. Biol., Dalhousie Univ., Halifax, N.S. B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-FISH.-AQUAT.-SCI. 1984. vol. 41, no. 12, pp. 1847-1851 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X PUBLICATION YEAR: 1984 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Predation of morbid sea urchins (S. droebachiensis ) by rock crabs (C. irroratus ) and other predators was observed using SCUBA during an outbreak of disease in southwestern Nova Scotia in August 1983. Disease increases susceptibility of sea urchins to predation by precluding natural defensive behaviors including spine projection, strong attachment to the substratum, and aggregation. In laboratory feeding experiments, rock crabs preferred diseased or narcotized sea urchins over healthy ones and fed upon them at a much higher rate than crabs given only healthy sea urchins as prey. Rock crabs showed no significant preference between diseased and narcotized sea urchins. Rock crabs clearly preferred mussels over healthy or diseased sea urchins. Although rock crabs do not appear to be important predators of healthy sea urchins, from field and laboratory findings it is concluded that they contribute to mass mortality of sea urchins by preying upon morbid individuals during outbreaks of disease. DESCRIPTORS: predation-; Cancer-irroratus; Strongylocentrotus-droebachiensis; diseases-; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0827031 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 192 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Design of a flexible cage for benthic ecological experiments in high energy marine environments. AUTHOR(S): Bernstein,-B.B.; Welsford,-R.W. CORPORATE AUTHOR(S): Bedford Inst. of Oceanography, Dartmouth, N.S. (Canada). Mar. Ecol. Lab SOURCE (BIBLIOGRAPHIC CITATION): CAN.-TECH.-REP.-FISH.-AQUAT.-SCI. 1983. no. 1221, 26 pp PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: R (Report) ABSTRACT: The authors present the design of a flexible, extremely resilient caging system for benthic experiments with large invertebrates (e.g. sea urchins (Strongylocentrotus droebachiensis ), lobsters, and crabs (Decapoda). Cages are constructed of monifilament stretched over a circular frame, and anchored to a grid of chains. This system was deployed at 7 m depth, and successfully survived winter storms with wind velocities in excess of 65 km per hour, and swells of 7 m. DESCRIPTORS: cages-; design-; benthos-; marine-invertebrates; marine-environment; Homarus-americanus; Decapoda-; Strongylocentrotus-droebachiensis IDENTIFIERS: equipment-; experimental-research CLASSIFICATIONS: Aquatic-Communities:-Benthos-1462 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0826958 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 193 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Recovery of macroalgae following widespread sea urchin mortality with a description of the nearshore hard-bottom habitat on the Atlantic coast of Nova Scotia. AUTHOR(S): Moore,-D.S.; Miller,-R.J. CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Halifax, N.S. (Canada). Fish. Res. Branch SOURCE (BIBLIOGRAPHIC CITATION): CAN.-TECH.-REP.-FISH.-AQUAT.-SCI. 1983. no. 1230, 101 pp PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: R (Report) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A survey of 2,900 km of the Atlantic coastline of Nova Scotia including 81 transects and 1,044 stations was conducted in 1982. This survey measured the area released to macroalgae by recent sea urchin (Strongylocentrotus droebachiensis ) mass mortalities, characterized the physical habitat of this area, and contrasted the seaweed recovery to areas where sea urchins still remained. This habitat is of interest to fishery biologists and ecologists because it supports an important lobster (Homarus americanus ) fishery and has a large potential for macroalgal production. DESCRIPTORS: interspecific-relationships; Strongylocentrotus-droebachiensis; algae-; Laminaria-; Homarus-americanus; habitat-; mortality-; colonization-; ANW, -Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0746564 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 194 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Widespread mass mortalities of the green sea urchin in Nova Scotia, Canada. AUTHOR(S): Miller,-R.J.; Colodey,-A.G. AUTHOR AFFILIATION: Dep. Fish. Oceans, Halifax Fish. Res. Lab., Halifax, N.S. B3J 2S7, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1983. vol. 73, no. 3, pp. 263-267 INTERNATIONAL STANDARD NUMBERS: ISSN 0025-3162 PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Mass mortalities of sea urchins exceeding 84,000 t live weight or 2,900 t organic weight occurred during the autumns of 1980 and 1981 along the southern coast of Nova Scotia, Canada. The kill was nearly complete along 160 km of shoreline (straight-line distance) and was intermittent along another 280 km. Sea urchins in a variety of rocky habitats were affected, including areas exposed to and sheltered from ocean swell, with both dense and no macrophyte cover, and from 0-13 m depth. The cause of the mortalities was presumed to be a biological agent and was transferable in the laboratory. Colonization of the habitat by subtidal macroalgae and a subsequent large increase in benthic primary production is expected to follow. DESCRIPTORS: mortality-causes; biological-poisons; toxins-; Strongylocentrotus -droebachiensis; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Pests-and-control-1485 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0723739 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 195 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Studies of recent mortalities of the sea urchin (Strongylocentrotus droebachiensis ) in Nova Scotia. AUTHOR(S): Li,-M.F.; Cornick,-J.W.; Miller,-R.J. AUTHOR AFFILIATION: Fish. and Environ. Sci., Dep. Fish. and Oceans, Halifax Lab., P.O. Box 550, N.S., B3J 2S7, Canada CORPORATE AUTHOR(S): International Councl. for the Exploration of the Sea, Copenhagen (Denmark) CONFERENCE INFORMATION: Council Meeting, 1982, of the International Council for the Exploration of the Sea (Copenhagen (Denmark)) (11 Oct 1982) SOURCE (BIBLIOGRAPHIC CITATION): COPENHAGEN-DENMARK-ICES 1982. 8 pp SERIES TITLE/INFORMATION: ICES-COUNCIL-MEETING-1982-COLLECTED-PAPERS. NOTES: Only available from the author. REPORT/PATENT NUMBERS: ICES-CM-1982/L:46 (ICESCM1982L46) PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) DESCRIPTORS: disease-control; natural-mortality; Strongylocentrotus-droebrachiensis; ANW,-Canada,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Parasites-and-diseases-1484 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0675827 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 196 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The larval and juvenile ecology of the temperate octocoral Alcyonium siderium Verrill. 2. Fecundity, survival, and juvenile growth. AUTHOR(S): Sebens,-K.P. AUTHOR AFFILIATION: Mus. Comp. Zool., Harvard Univ., Cambridge, MA 02138, USA SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1983. vol. 72, no. 3, pp. 263-285 PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Alcyonium siderium (Anthozoa: Alcyonacea) colonies were examined and collected at sites off Nahant, Massachusetts to determine timing of larval release and the relationship between colony size and larval production. The largest colony in this study produced 747 fully developed planulae and there was a linear relationship between larval production and colony weight. Distance from the nearest adult (possibly the parent) colony significantly influenced growth and survival during the first year. The greatest settlement occurred within a centimeter of adults, very little occurred more than 4 cm distant. Larval mortality was probably the result of predation by the nudibranch Coryphella verrucosa and by the sea urchin Strongylocentrotus droebachiensis . Nudibranchs graze polyps on adult colonies well as removing juveniles from the substratum. Urchins are encountered very infrequently within stands of adult Alcyonium colonies; this may account for the high survivorship of juveniles near adult colonies and the high mortality away from such colonies. DESCRIPTORS: USA,-Massachusetts,-Nahant; fecundity-; growth-; survival-; colonial -organisms; larvae-; juveniles-; Alcyonium-siderium; ANW,-USA, -Massachusetts,-Nahant CLASSIFICATIONS: Population-Studies:-Population-dynamics-1442 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0660773 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 197 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The relationship between food ration and reproductive effort in the green sea urchin, Strongylocentrotus droebachiensis . AUTHOR(S): Thompson,-R.J. AUTHOR AFFILIATION: Memorial Univ. of Newfoundland, Mar. Sci. Res. Lab., St. John's, Nfld. A1C 5S7, Canada SOURCE (BIBLIOGRAPHIC CITATION): OECOLOGIA. 1983. vol. 56, no. 1, pp. 50-57 INTERNATIONAL STANDARD NUMBERS: ISSN 0029-8549 PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Gamete production, somatic growth and reproductive effort were measured in sea urchins maintained on a mixture of kelp and mussel flesh at three ration levels. Urchins on low ration were able to maintain an output of gametes half that of urchins fed ad libitum. This was achieved at the expense of somatic production, which was negative in the low ration groups. Despite the reduction in the output of gametes, reproductive effort was greater in the low ration urchins than in the well fed ones. The lipid content and the energy content were greater in eggs released by urchins fed ad libitum than in eggs produced by urchins at low ration. Several indices of reproductive effort were derived from the data and their advantages and disadvantages evaluated. All showed the same trend towards an increase in reproductive effort as the food supply was depleted. DESCRIPTORS: sexual-reproduction; food-availability; energy-transfer; experimental -research; Strongylocentrotus-droebachiensis CLASSIFICATIONS: Chordate-Biology:-General:-Reproduction-and-development-1324 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0653580 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00442/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2023889 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968-1999) Location: FriHarbor Periodicals -- Shelved by title: Oecologia -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968 -1999) Location: NatSci Periodicals -- Call number: QH540 .O32 -- LIB HAS: v.1- (1968-) -- LATEST ISSUES ON DISPLAY Record 198 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Sea urchin (Stronglyocentrotus droebachiensis ) aggregating behavior investigated by a subtidal multifactorial experiment. AUTHOR(S): Bernstein,-B.B.; Schroeter,-S.C.; Mann,-K.H. AUTHOR AFFILIATION: Richard W. Welsford Res. Group Ltd., Ste. 1, 2nd floor, Collins Ct., Historic Properties, 1869 Upper Water St., Halifax, N.S. B3J 1S9, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-FISH.-AQUAT.-SCI. 1983. vol. 40, no. 11, pp. 1975-1986 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A multilevel factorial field experiment to identify the effects of five factors on sea urchins (Strongylocentrotus droebachiensis ) aggregating behavior was performed. The factors were (1) source of urchins (kelped or barrens), (2) density of urchins (high or low), (3) location of treatment (kelped or barrens), (4) the presence of type of invertebrate predators (crabs or lobsters), and (5) season (summer or winter). The presence of lobsters in the kelpbed, and of crabs in the barrens, triggered the formation of even larger aggregations. These aggregations remain in the open even in the presence of predators. It is argued that this behavioral mechanism (a defensive aggregation response to lobsters in the kelpbed) is the trigger that precipitates widespread destructive urchin grazing and the transformation of kelpbeds to barrens. DESCRIPTORS: organism-aggregations; Strongylocentrotus-droebachiensis; environmental -factors; in-situ-measurements; defense-mechanisms; predation-; ANW, -Canada,-Nova-Scotia CLASSIFICATIONS: Autecology:-Behavior-1423 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0652979 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 199 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Sea urchins in the St. Lawrence estuary: Their abundance, size-structure, and suitability for commercial exploitation. AUTHOR(S): Himmelman,-J.H.; Lavergne,-Y.; Axelsen,-F.; Cardinal,-A.; Bourget,-E. AUTHOR AFFILIATION: Dep. Biol. and GIROQ, Univ. Laval, Quebec, Que. G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-FISH.-AQUAT.-SCI. 1983. vol. 40, no. 4, pp. 474-486 INTERNATIONAL STANDARD NUMBERS: ISSN 0706-652X PUBLICATION YEAR: 1983 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: B (Brackish) ABSTRACT: Quantitative transects were made at nine locations along the Saint Lawrence Estuary, Quebec, to examine changes in the abundance and size-structure of populations of the green sea urchin, Strongylocentrotus droebachiensis , in relation to the estuarine gradient. Near the seaward extremity of the estuary, sea urchin densities are very high and small urchins are particularly abundant in shallow water. In contrast, midway up the estuary, small urchins are scarce in shallow water, probably because they cannot tolerate the periodic drops in surface salinities which occur there. Where urchin densities are high, urchin grazing severely limits algal production, and because of low algal food availability, the urchin growth rate is exceedingly low. In the Upper Estuary, urchin numbers are low and no urchins are found near the surface. DESCRIPTORS: population-number; population-structure; exploitation-; Stronglyocentrotus -droebachiensis; commercial-availability; estuaries-; growth-; survival-; salinity-effects; ecological-distribution; ANW,-St.-Lawrence-Estuary CLASSIFICATIONS: Population-Studies:-Population-structure-1441; Fishable-stocks:-Stock -assessment-and-management-1604 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0632679 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2051094 Location: Available Online -- Shelved by title: Full Text through ProQuest Direct http://proquest.umi.com/pqdlink?Ver=1&Exp=07-01 -2003&REQ=3&Cert=7YMWy6YMy6bpLgoHt04CRpK0odiyGY8GFyPJRYCOyb4QcDP5iYc3XsCDREiVdG8Y&Pub=36142 -- LIB HAS: Jan.1998- -- Restricted to UW, and other Cooperative Library Project institutions. This title is purchased as part of the Cooperative Library Project. Location: Available Online -- Shelved by title: Some articles are available from Lexis-Nexis online. http://www.lib.washington.edu/databases/LexisNexis/catlink.html -- UW Restricted Location: Fish-Ocean Stacks -- Call number: SH1 .C366 -- LIB HAS: v.37- (1980-) -- LATEST ISSUES ON DISPLAY; Indexes in Fish-Ocean Reference Location: FriHarbor Periodicals -- Shelved by title: Canadian journal fisheries aquatic sciences -- Call number: SH1 .C366 -- LIB HAS: v.37-44 no.1, v.49 no.7- (1980-) Record 200 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Changes in the nearshore ecosystem of the Atlantic coast of Nova Scotia, 1968-81. AUTHOR(S): Bernstein,-B.B.; Mann,-K.H. AUTHOR AFFILIATION: Richard W. Welsford Res. Group, Ste. 1, Collins Court, 1869 Upper Water St., Halifax, N.S. B3J 1S9, Canada CONFERENCE INFORMATION: Symp. on Environmental Conditions in the Northwest Atlantic during 1970-79, Dartmouth, N.S. (Canada), 15 Sep 1981 SOURCE (BIBLIOGRAPHIC CITATION): SYMPOSIUM-ON-ENVIRONMENTAL-CONDITIONS-IN-THE-NORTHWEST-ATLANTIC-DURING-1970 -79. Northwest-Atlantic-Fisheries-Organ.,-Dartmouth,-N.S.-Canada 1982. no. 5 pp. 101-105 INTERNATIONAL STANDARD NUMBERS: ISSN 0250-6432 SERIES TITLE/INFORMATION: SCI.-COUNC.-STUD.-NAFO. no. 5 PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Beginning in the early 1970's, grazing by aggregations of sea urchins, Strongylocentrotus droebachiensis , completely destroyed subtidal kelp beds in St. Margaret's Bay, Nova Scotia, leaving barrens devoid of macroalgae. Similar destructive grazing appears to have occurred along the entire Atlantic coast of Nova Scotia. In thriving kelp beds, predation pressure by lobsters, crabs, starfish and fish keeps sea urchins at low density and in hiding. Sea urchin density increased in the late 1960's, perhaps as a result of environmental change and reduction of predators, and, upon reaching a threshold level of abundance, they changed their behavior and aggregated as a defence against predation. The barrens that result from destructive grazing are characterized by very low productivity, in contrast with thriving kelp beds, and represent a stable configuration of the ecosystem, because the surviving sea urchins are abundant enough to prevent resettlement of macroalgae. DESCRIPTORS: environmental-impact; feeding-behavior; ecosystems-; Strongylocentrotus -droebachiensis; Laminaria-; grazing-; kelps-; coastal-zones; ANW,-Canada, -Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Ecosystems-and-energetics -1482; Invertebrate-Biology:-General:-General-1241; Autecology:-Nutrition -and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0571616 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2059194 Location: Fish-Ocean Stacks -- Call number: SH1 .S38 -- LIB HAS: no.1- (1981-) Record 201 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Interactions in kelp bed ecosystems in the Northwest Atlantic: Review of a workshop. AUTHOR(S): Pringle,-J.D.; Sharp,-G.J.; Caddy,-J.F. AUTHOR AFFILIATION: Dep. Fish. Oceans, Resour. Branch, P.O. Box 550, Halifax, N.S. B3J 2S7, Canada CONFERENCE INFORMATION: Workshop on Multispecies Approaches to Fisheries Management Advice, St. John's, Nfld. (Canada), 26 Nov 1979 SOURCE (BIBLIOGRAPHIC CITATION): MULTISPECIES-APPROACHES-TO-FISHERIES-MANAGEMENT-ADVICE. Mercer,-M.C.-ed. 1982. no. 59 pp. 108-115 INTERNATIONAL STANDARD NUMBERS: ISBN 0-660-11138-1 ISSN 0706-6481 SERIES TITLE/INFORMATION: CAN.-SPEC.-PUBL.-FISH.-AQUAT.-SCI. no. 59 PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Workers in eastern Nova Scotia hypothesized that (1) American lobsters (Homarus americanus ) are the keystone predators of kelp (Laminaria spp.) bed ecosystems, (2) lobster populations have declined due to poor management, (3) this has permitted urchin (Strongylocentrotus droebachiensis ) populations to explode, causing destructive grazing of macroalgae, and (4) the resultant barren system is permanent. A workshop, sponsored by fisheries management, discussed these hypotheses in light of presented papers and recommended remedial action. Participants concluded that kelp bed destruction in St. Margaret's Bay, Nova Scotia, was due to urchins but the triggering process was unclear. Allochthonous sources, kelp disease, and release from predation were discussed. DESCRIPTORS: interspecific-relationships; trophic-relationships; population-dynamics; conferences-; ecosystem-management; fishery-management; Laminaria-; Homarus-americanus; Strongylocentrotus-droebachiensis; ANW,-Canada,-Nova -Scotia,-St.-Margaret'-s-Bay CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Ecosystems-and-energetics -1482; General-Aspects:-Conferences,-meetings,-etc.-1106; Fishable-stocks: -Stock-assessment-and-management-1604; Productivity,-Ecosystems,-Species -Interactions:-Species-interactions:-General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0568408 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 202 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Stability on a sea urchin front in southwest Nova Scotia. AUTHOR(S): Miller,-R.J. CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Halifax, N.S. (Canada). Fisheries Res. Br SOURCE (BIBLIOGRAPHIC CITATION): CAN.-MANUSCR.-REP.-FISH.-AQUAT.-SCI. 1982. no. 1662, 16 pp PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: B (Book) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Sea urchin (Strongylocentrotus droebachiensis ) abundance and macrophyte cover was surveyed in 1979, nearshore west of Cape Sable Island. Parts of this area most likely to experience change in urchin abundance and macrophyte cover were resurveyed in 1981, and results of the two surveys are compared in this report. There were no marked changes in sea urchin abundance or biomass, there was little recruitment of urchins smaller than 3 cm diameter, and there was no general migration of high urchin densities toward shore. Area of kelp cover did not change, although on most transects the transition from good to poor cover of macrophyte understory was closer to shore in 1981. In summary, for most of the parameters measured, any change from 1979 to 1981 did not exceed the precision of measurement. DESCRIPTORS: resource-surveys; population-density; size-distribution; grazing-; kelps-; Strongylocentrotus-droebachiensis; feeding-behavior; mapping-; ANW, -Canada,-Nova-Scotia CLASSIFICATIONS: Population-Studies:-Population-structure-1441; Invertebrate-Biology: -General:-General-1241 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0514902 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 203 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Trace metals in sediments and biota from Strathcona Sound, NWT; Nanisivik Marine Monitoring Programme, 1974-1979. AUTHOR(S): Fallis,-B.W. CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Winnipeg, Man. (Canada). Western Reg SOURCE (BIBLIOGRAPHIC CITATION): CAN.-TECH.-REP.-FISH.-AQUAT.-SCI. 1982. no. 1082, 39 pp NOTES: Incl. bibliogr.: 62 ref. PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: B (Book); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The development of the Nanisivik Mine resulted in the federal government initiating a programme to monitor changes in trace metal concentrations in sediments and biota in Strathcona Sound, NWT. The first set of post -operational samples since commencement of production at the mine in October, 1976 were collected in August, 1979. Analytical results indicate that concentrations of lead, zinc, cadmium and arsenic in sediments, seaweed (Fucus vesiculosus ) and molluscs (Mya truncata ) in the vicinity of the marine terminal (station 3) have increased relative to pre -operational concentrations. Concentrations of lead, zinc and arsenic in sea urchins, (Strongylocentrotus droebachiensis ), at station 3 have also increased. Increases relative to preoperational concentrations at station 3 were as follows: mean lead concentrations in sediments, Fucus and Mya rose by 56.0, 57.4 and 1.09 mu g/g, respectively, representing 3.8, 28.3 and 1.92 times pre-operational values, while the concentration in sea urchins rose from below the limit of detection to 23.9 mu g/g. Mean zinc concentrations in sediments, Fucus, Strongylocentrotus and Mya rose by 595, 405, 213 and 283 mu g/g respectively, equivalent to elevations of 4.8, 5.6, 4.3 and 3.7 times pre-operational values. Arsenic concentrations rose 5.4, 10.1, and 0.2 mu g/g respectively in sediments, Fucus and Strongylocentrotus , equivalent to 2.4, 1.4 and 1.1 times pre-operational values, respectively. DESCRIPTORS: pollution-monitoring; heavy-metals; sediment-pollution; seaweeds-; Strongylocentrotus-droebachiensis; Mya-truncata; algae-; PNW,-Canada, -Northwest-Territories,-Strathcona-Sound IDENTIFIERS: marine-organisms CLASSIFICATIONS: Pollution:-Characteristics,-behavior-and-fate-1503; Pollution: -Characteristics,-behavior-and-fate-2445 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1); Ocean-Technology,-Policy-and -Non-Living-Resources (Q2) OCEAN ZONES: Polar-Arctic-Westward (PNW) ACCESSION NUMBER: 0503084 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 204 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Breeding season and egg morphology of echinoderms in Balsfjorden, northern Norway. AUTHOR(S): Britt,-I.; Petersen,-F. AUTHOR AFFILIATION: Inst. Biol. Geol., P.O. Box 3085, Univ. Tromsoe, N-9001 Tromsoe, Norway SOURCE (BIBLIOGRAPHIC CITATION): SARSIA. 1982. vol. 67, no. 4, pp. 215-221 PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Reproduction has been investigated in echinoderms from selected localities in an arctic-boreal fjord (c. 70 degree N). Three echinoids (Strongylocentrotus droebachiensis, S. pallidus , and Echinus esculentus ) and three ophiuroids (Ophiopholis aculeata, O. sarsi , and O. albida ) all produce large numbers of small eggs that develop planktotrophically in the pelagic zone during spring and summer. So does one of the six asteroids examined, Asterias rubens . Five other asteroids (Leptasterias muelleri, Asterias lincki, Ctenodiscus crispatus, Pteraster militaris , and Solaster endeca ) and the one holothurioid examined (Cucumaria frondosa ) all produce fewer numbers of large eggs. A. lincki, C. crispatus, S. endeca , and C. frondosa develop licithotrophically in the pelagic zone. S. endeca and C. frondosa reproduce during spring whereas A. lincki and C. crispatus have main reproductive peaks in mid-winter. L. muelleri and P. militaris develop by brood protection; the former reproduces in winter, the latter in spring. Eggs from the different species can generally be distinguished morphologically. Distinctive reproduction strategies in arctic-boreal asteroids are indicated. DESCRIPTORS: Echinoida-; Ophiuroida-; Asteroida-; fjords-; Norway-Coast; reproductive -strategy; egg-production; benthos-; sexual-reproduction; eggs-; Echinodermata-; ANE,-Norway IDENTIFIERS: morphology- CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) ACCESSION NUMBER: 0493232 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 205 of 241 in ASFA 1978-1987 TITLE (ENGLISH): An assessment of feasibility of using high-calcium quicklime as an experimental tool for research into kelp bed/sea urchin ecosystems in Nova Scotia. AUTHOR(S): Bernstein,-B.B.; Welsford,-R.W. CORPORATE AUTHOR(S): Department of Fisheries and Oceans, Halifax, N.S. (Canada). Resource Branch SOURCE (BIBLIOGRAPHIC CITATION): CAN.-TECH.-REP.-FISH.-AQUAT.-SCI. 1982. no. 968, 60 pp PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: B (Book) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The goal of this study was to assess the feasibility of using quicklime as an experimental tool in Nova Scotia. In California, the Department of Fish and Game and Kelco Co. use quicklime to reduce sea urchin (Strongylocentrotus droebachiensis ) populations that would otherwise destroy commercially harvested kelp beds. The authors built and field tested a liming apparatus in Nova Scotia. They recommend modifications in the equipment and application procedures that will probably raise the kill rate to at least 80%. This is much lower than in California because the much lower water temperature retards bacterial infection and because the much higher relief of the sea floor in Nova Scotia prevents quicklime from reaching all the sea urchins. DESCRIPTORS: population-control; calcium-compounds; resource-management; Strongylocentrotus-droebachiensis; feasibility-studies; ANW,-Canada,-Nova -Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Pests-and-control-1485; Fishable-stocks:-Stock-assessment-and-management-1604 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0481943 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 206 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Reproductive cycle of the mottled red chiton (Tonicella marmorea ) in the St. Lawrence Estuary, Quebec. AUTHOR(S): Jalbert,-P.; Larrivee,-D.; Himmelman,-J.H. AUTHOR AFFILIATION: GIROQ, Univ. Laval, Que. G1K 7P4, Canada SOURCE (BIBLIOGRAPHIC CITATION): NAT.-CAN. 1982. vol. 109, no. 1, pp. 33-37 PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: B (Brackish) ABSTRACT: The annual reproductive cycle of the mottled red chiton (T. marmorea ) was studied in the St. Lawrence Estuary, Quebec. Gonadal growth begins in mid -winter and reaches a peak in mid-May. Comparative observations on the green sea urchin (Strongylocentrotus droebachiensis ) from the same location, show that gonadal growth begins in the previous summer, and continues through the autumn and winter. This difference indicates that different environmental factors probably control the timing of gonadal growth in the two species. In both species, spawning occurs in June. The spring phytoplankton bloom is the spawning cue for S. droebachiensis and the synchronous spawning of T. marmorea and S. droebachiensis suggest that phytoplankton is also the spawning cue for T. marmorea . The delayed development of a shallow mixed surface layer and spring phytoplankton bloom in the Estuary, compared to more oceanic regions, would account for the late spawnings in the Estuary. DESCRIPTORS: annual-cycles; spawning-; Canada,-Quebec,-St.-Lawrence-Estuary; reproductive-cycle; Tonicella-marmorea; ANW,-St.-Lawrence-Estuary IDENTIFIERS: environmental-factors CLASSIFICATIONS: Malacology:-Reproduction-and-development-1264 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0457582 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 207 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Monitoring and manipulation of a sublittoral hard bottom biocoenosis in Balsfjord, northern Norway. AUTHOR(S): Sandnes,-O.K.; Gulliksen,-B. AUTHOR AFFILIATION: Mar. Biol. Stn., Tromsoe, Norway CONFERENCE INFORMATION: 14. European Marine Biology Symposium, Helgoland (FRG), 23 Sep 1979 SOURCE (BIBLIOGRAPHIC CITATION): 14.-EUROPEAN-MARINE-BIOLOGICAL-SYMPOSIUM-ON-PROTECTION-OF-LIFE-IN-THE-SEA. Kinne,-O.;Bulnheim,-H.P.-eds. 1980. vol. 33 pp. 467-472 INTERNATIONAL STANDARD NUMBERS: ISSN 0017-9957 SERIES TITLE/INFORMATION: HELGOL.-MEERESUNTERS. vol. 33 PUBLICATION YEAR: 1980 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: B (Book); K (Conference) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Sublittoral hard biocoenoses in Balsfjord, Norway (69 degree 31'N, 19 degree 1' E), were monitored using underwater stereophotogrammetry. The study includes manipulation of natural densities of organisms and testing the importance of biological interactions and "key species" for the structure of biocoenoses. Underwater photography has the advantages of being a non-destructive method, but it is selective because small or hidden organisms cannot always be observed. Field experiments with exclusion of organisms from cages seem suitable for testing hypotheses concerning which animals are "key species" in certain biocoenoses. Sea -urchins (Strongylocentrotus droebachiensis, S. pallidus ) were suspected to be "key species" in the present study, and their removal from cages caused an increase in adundance of barnacles (Balanus balanoides ), the limpet Acmaea testudinalis and algal cover. DESCRIPTORS: biocenosis-; resource-management; benthos-; baseline-studies; pollution -monitoring; ANE,-Norway,-Balsfjord CLASSIFICATIONS: Environmental-Changes,-Conservation,-Public-Health:-Conservation,-wildlife -management-and-recreation-1523; Population-Studies:-Population-genetics -1443 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northeast (ANE) ACCESSION NUMBER: 0455651 LIBRARY HOLDINGS MESSAGE: See records of latest issues received http://catalog.lib.washington.edu/record=b2004785 Location: Fish-Ocean Stacks -- Call number: QH301 .H4 -- LIB HAS: v. 1-32. (1937 -1979.) Location: FriHarbor Periodicals -- Call number: QH301 .H4 -- LIB HAS: v. 10-32. (1964-1979.) Record 208 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Echinoderm calcite: A mechanical analysis from larval spicules. AUTHOR(S): Emlet,-R.B. AUTHOR AFFILIATION: Dep. Zool., Univ. Washington, Seattle, WA 98195, USA SOURCE (BIBLIOGRAPHIC CITATION): BIOL.-BULL.-MAR.-BIOL.-LAB.-WOODS-HOLE. 1982. vol. 163, no. 2, pp. 264-275 PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The flexural stiffness (EI) was measured for simple and fenestrated spicules in echinoid larvae. A Young's modulus (E) of 36.3 x 10 super(9) N/m super(2) was estimated for these calcitic spicules by EI/I where I was calculated independently from measurements made by SEM. The flexural stiffness of fenestrated spicules is approximately three times greater than that of simple spicules. This increased flexural stiffness is due to structural and not material differences between the spicules. At the material level, this calcitic tissue behaves like a composite which will reduce stiffness but increase strength compared to inorganic calcite. At the structural level its porous nature increases its stiffness and buckling strength over that of a solid structure of similar weight. DESCRIPTORS: spicules-; calcite-; mechanical-properties; integumentary-system; Echinodermata-; Strongylocentrotus-droebachiensis; Strongylocentrotus -franciscanus; Dendraster-excentricus; Psolus-chitonoides IDENTIFIERS: solid-spicules; fenestrated-spicules CLASSIFICATIONS: Invertebrate-Biology:-General:-Taxonomy-and-morphology-1243 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0391511 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 209 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Comparative studies on particulate acid phosphatases in sea urchin eggs. AUTHOR(S): Yokota,-Y.; Nakano,-E. AUTHOR AFFILIATION: Dep. Biol., Nagoya Univ., Nagoya 464, Japan SOURCE (BIBLIOGRAPHIC CITATION): COMP.-BIOCHEM.-PHYSIOL.,-B. 1982. vol. 71B, no. 4, pp. 563-567 PUBLICATION YEAR: 1982 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Particulate acid phosphatases were partially purified and characterized in the eggs of six species of sea urchins and one species of sand dollar, Hemicentrotus pulcherrimus , Anthocidaris crassispina , Pseudocentrotus depressus , Strongylocentrotus purpuratus , S. francicanus , S. droebachiensis and Dendraster excentricus . The enzymes of 7 species were strongly inhibited by NaF, tartrate, p-chloromercuribenzoate and HgCl sub(2). Substrate specificity of the enzymes of all species was broad. DESCRIPTORS: acid-phosphatase; purification-; kinetics-; Hemicentrotus-pulcherrimus; Anthocidaris-crassispina; Pseudocentrotus-depressus; Strongylocentrotus -purpuratus; Strongylocentrotus-francicanus; Strongylocentrotus -droebachiensis; Dendraster-excentricus; eggs-; enzymes-; biochemical -analysis; Euechinoidea- IDENTIFIERS: acid-phosphatase CLASSIFICATIONS: Invertebrate-Biology:-General:-Physiology,-biochemistry,-biophysics-1246 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0368345 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 210 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Interspecific Facilitation in a Guild of Benthic Marine Herbivores. AUTHOR(S): Duggins,-D.O. AUTHOR AFFILIATION: Univ. WA, Friday Harbor Lab., WA 98250, USA SOURCE (BIBLIOGRAPHIC CITATION): OECOLOGIA. 1981. vol. 48, no. 2, pp. 157-163 INTERNATIONAL STANDARD NUMBERS: ISSN: 0029-8549 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Interspecific relationships and trophic function within the urchin guild are considered in light of experiments and observations performed in situ. Two conclusions are reached: 1) interactions between members of the guild contribute to its persistence, and 2) the plant-herbivore interactions so important in structuring this community can best be evaluated when guild members are treated as a unit. As with other mixed species trophic units, the mechanisms of interspecies facilitation operate to reduce the effects of predation and increase foraging efficiency. DESCRIPTORS: zoobenthos-; predation-; trophic-levels; marine-ecology; Echinoidea-; Strongylocentrotus-franciscanus; Stronglycentrotus-purpuratus; Strongylocentrotus-droebachiensis; Pycnopoidia- CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0231893 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00442/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2023889 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968-1999) Location: FriHarbor Periodicals -- Shelved by title: Oecologia -- Call number: QH540 .O32 -- LIB HAS: v.1-121 (1968 -1999) Location: NatSci Periodicals -- Call number: QH540 .O32 -- LIB HAS: v.1- (1968-) -- LATEST ISSUES ON DISPLAY Record 211 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Effects of Salinity on Respiration and Nitrogen Excretion in Two Species of Echinoderms. AUTHOR(S): Sabourin,-T.D.; Stickle,-W.B. AUTHOR AFFILIATION: Oregon State Univ., Mar. Sc. Ctr., Marine Dr., Newport, OR 97365, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1981. vol. 65, no. 1, pp. 91-99 INTERNATIONAL STANDARD NUMBERS: ISSN: 0025-3162 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The 30-d survival limit of Eupentacta quinquesemita and Strongylocentrotus droebachiensis is 12 - 13ppt. S. The activity coefficient (1,000/righting time in seconds) of stepwise acclimated sea urchins declined from 16.3 at 30ppt. S to 3.5 at 15ppt. S. Oxygen consumption rates (QO sub(2)) of both species held at 30ppt. S and 13 degree C were highest in June and lowest in December. During the summer, the QO sub(2) of both species held at 30, 20 and 15ppt. S varied directly with salinity. Perivisceral fluid PO sub(2) varied directly with acclimation in sea urchins, but not in sea cucumbers. Perivisceral fluid oxygen content of acclimated sea urchins was significantly lower at 15 and 20ppt. S than at 30ppt. S due to reduced PO sub(2) and extracellular fluid volume at the lower salinities. The QO sub(2) of both species varied directly with ambient salinity during a 30 -10-30ppt. semidiurnal pattern of fluctuating salinity. Total nitrogen excretion of stepwise acclimated seacucumbers declined significantly from 30 to 15ppt. S. DESCRIPTORS: salinity-effects; respiration-; excretion-; oxygen-consumption; Eupentacta -quinquesemita; Strongylocentrotus-droebachiensis IDENTIFIERS: nitrogen- CLASSIFICATIONS: Autecology:-Environmental-effects-1422 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0212689 LIBRARY HOLDINGS MESSAGE: Connect to this title online; UW restricted http://link.springer -ny.com/link/service/journals/00227/index.htm See records of latest issues received http://catalog.lib.washington.edu/record=b2010866 Location: Available Online Location: Fish-Ocean Stacks -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) -- LATEST ISSUES IN: DISPLAY Location: FriHarbor Periodicals -- Shelved by title: Marine biology -- Call number: QH91.A1 M37 -- LIB HAS: v.1- (June 1967-) Location: NatSci Periodicals -- Call number: QH91.A1 M37 -- LIB HAS: v.1-72 (June 1967-1983) Record 212 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Relationship Between Destructive Grazing by the Sea Urchin, Strongylocentrotus droebachiensis , and the Abundance of American Lobster, Homarus americaus , on the Atlantic Coast of Nova Scotia. AUTHOR(S): Wharton,-W.G.; Mann,-K.H. AUTHOR AFFILIATION: Dept. Biol., Dalhousie Univ., Halifax, NS B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): CAN.-J.-FISH.-AQUAT.-SCI. 1981. vol. 38, no. 11, pp. 1339-1349 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Relationships between percentage cover of macroalgae, population structure of sea urchins (Strongylocentrotus droebachiensis ), and the history of the lobster fishery were examined at nine sites distributed along the Atlantic coast of Nova Scotia from Guysborough County in the northeast to Pubnico in the southwest. At Pubnico there was dense algal cover and a small number of urchins living in crevices, and at Cape Sable there was an area of transition, but at all other sites there were urchin-dominated barren grounds. When the population structure of the urchins was compared with that previously observed in St. Margaret's Bay before, during, and after destruction of beds of kelp (Laminaria spp. and Agarum ) by overgrazing, it was concluded that kelp bed destruction occurred on the coast north of Halifax prior to 1970, and on the coast south of Halifax after 1970. From the records of American lobster (Homarus americanus ) catches it was concluded that a critical decline in catches at each site occurred a few years after kelp bed destruction. DESCRIPTORS: interspecific-relationships; grazing-; seaweeds-; population-dynamics; shellfish-catch-statistics; predation-; overfishing-; population -structure; abundance-; Homarus-americanus; Strongylocentrotus -droebachiensis; Laminaria-; Agarum-; ANW,-Nova-Scotia CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0181412 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 213 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Feeding and Nutritional Ecology of the Sea Urchin Strongylocentrotus drobachiensis in Maine, USA. AUTHOR(S): Larson,-B.R.; Vadas,-R.L.; Keser,-M. AUTHOR AFFILIATION: FMC, Mar. Colloids Div., Rockland, ME 04841, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1980. vol. 59, no. 1, p. 49-62 PUBLICATION YEAR: 1980 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The sea urchin S. drobachiensis exhibited a high degree of good selectivity, whether foods were presented singly or in combination. Foods ranked from most of least preferred were, in summer, Laminaria longicruris , Chondrus crispus , Corallina officinalis , Ascophyllum nodosum , and Agarum cribrosum , whereas in winter A. nodosum and A. cribrosum exchanged ranks. Food preference was not correlated with caloric content but, because of higher feeding rates on preferred foods, caloric intake was positively correlated with preference. The adsorption of L. longicruris , the most preferred alga, was highest in all measurements. Growth and reproductive development of S. drobachiensis on single species diets were postively correlated with food preference. These data support the view that S. drobachiensis has evolved a feeding strategy resulting in the maximization of growth and reproduction. DESCRIPTORS: feeding-behavior; nutritional-requirements; growth-; sexual-reproduction; food-preferences; Strongylocentrotus-droebachiensis; ANW,-USA,-Maine CLASSIFICATIONS: Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0179175 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 214 of 241 in ASFA 1978-1987 TITLE (ENGLISH): On Barriers to Hybridization Between Strongylocentrotus droebachiensis (O.F. Mueller) and S. pallidus (G.O. Sars). AUTHOR(S): Strathmann,-R.R. AUTHOR AFFILIATION: Dept. Zool., Univ.Washington, Friday Harbor Lab., Friday Harbor, WA 98250, USA SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1981. vol. 55, no. 1, pp. 39-47 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Strongylocentrotus droebachiensis (O.F. Mueller) and Strongylocentrotus pallidus (G.O. Sars) occur together over much of their ranges in both the Atlantic and Pacific Oceans and remain distinct species, but no strong barrier to genetic exchange has been found in a study in the San Juan Islands. Co-occurrence of embryos of both species in the plankton indicates similar times of spawning. Ova of S. droebachiensis are fertilized by sperm of S. pallidusbut the reciprocal cross gives a percent fertilization near zero. Hybrids of both crosses are viable with pigmentation resembling S. pallidus in the larval stage and S. droebachiensis in the adult stage. Ova of first generation female hybrids are more readily fertilized by perm of S. pallidus , so that gene flow through female hybrids is more likely to be from S. droebachiensis to S. pallidus than the reverse. Male hybrids were not tested. S. droebachiensis and S. pallidus , from deeper waters have lower fecundity than shallow water S. droebachiensis , which suggests that in the deeper waters individuals are food limited. The hypothesis that S. pallidus uses the sterile male technique to reduce reproductive output of S. droebachiensis is considered and rejected. DESCRIPTORS: genetics-; genotypes-; sexual-reproduction; fertilization-; hybridization-; Pacific-Ocean-Northeast; Washington-State-Coast; Strongylocentrotus -droebachiensis; Strongylocentrotus-pallidus; INE,-USA,-San-Juan-Is. CLASSIFICATIONS: Invertebrate-Biology:-General:-Genetics-and-evolution-1245 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 0161207 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 215 of 241 in ASFA 1978-1987 TITLE (ENGLISH): On Barriers to Hybridization Between Strongylocentrotus droebachiensis (O.F. Mueller) and S. pallidus (G.O. Sars). AUTHOR(S): Strathmann,-R.R. AUTHOR AFFILIATION: Dept. Zool., Univ. Washington, Friday Harbor Lab., Friday Harbor, WA 98250, USA SOURCE (BIBLIOGRAPHIC CITATION): J.-EXP.-MAR.-BIOL.-ECOL. 1981. vol. 55, no. 1, pp. 39-47 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Strongylocentrotus droebachiensis (O.F. Mueller) and Strongylocentrotus pallidus (G.O. Sars) occur together over much of their ranges in both the Atlantic and Pacific Oceans and remain distinct species, but no strong barrier to genetic exchange has been found in a study in the San Juan Islands. Co-occurrence of embryos of both species in the plankton indicates similar times of spawning. Ova of S. droebachiensis are fertilized by sperm of S. pallidus but the reciprocal cross gives a percent fertilization near zero. Hybrids of both crosses are viable with pigmentation resembling S. pallidus in the larval stage and S. droebachiensis in the adult stage. Ova of first generation female hybrids are more readily fertilized by sperm of S. pallidus , so that gene flow through female hybrids is more likely to be from S. droebachiensis to S. pallidus than the reverse. DESCRIPTORS: sympatric-populations; barriers-; hybridization-; sexual-reproduction; Strongylocentrotus-droebachiensis; Strongylocentrotus-pallidus; INE,-USA, -Washington,-San-Juan-Is. CLASSIFICATIONS: Invertebrate-Biology:-General:-Reproduction-and-development-1244 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 0160461 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 216 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The Role of Behavioral Responses to Predators in Modifying Urchins' (Strongylocentrotus droebachiensis ) Destructive Grazing and Seasonal Foraging Patterns. AUTHOR(S): Bernstein,-B.B.; Williams,-B.E.; Mann,-K.H. AUTHOR AFFILIATION: Dalhousie Univ., Dept. Biol., Halifax, NS, B3H 4J1, Canada SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1981. vol. 63, no. 1, pp. 39-49 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The authors documented spatial and temporal patterns of urchins (Strongylocentrotus droebachiensis ) and periwinkles (Littorina littorea ) in three habitats: a persistent Laminaria longicruris and L. diitata bed; an urchin dominated barrens, and the edge of the kelp bed that formed a boundary between the two. Urchins were rare in the kelp and, when present, always large and well hidden, a pattern interpreted as a response to crab and lobster predation. Urchins were abundant in the barrens, and, in the summer when predaceous fish were active during the day, foraged only at night. The authors observed the formation of a dense urchin feeding front along the kelp bed edge, and these urchins remained exposed and feeding even during the summer. Laboratory experiments demonstrated that aggregations are an effective defense against some predators, and that the presence of crabs increases the tendency of large urchins to aggregate. The authors hypothesize that healthy Laminaria spp. beds persist because kelp bed associated predators keep urchins at low densities and in hiding. A reduction in predation pressure permits urchin densities to increase to the point where they form aggregations, which provide better defense than hiding. These aggregations then graze destructively on Laminaria spp., forming barrens. These barrens seem to be a new, stable configuration of the system. DESCRIPTORS: community-composition; predation-; feeding-behavior; grazing-; behavioral -responses; abundance-; associations-ecological; Strongylocentrotus -droebachiensis; Littorina-littorea; Laminaria-; Laminaria-longicruris; Laminaria-digitata CLASSIFICATIONS: Aquatic-Communities:-Other-aquatic-communities-1464 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0127800 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 217 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The Association of N sub(2)-Fixing Bacteria With Sea Urchins. AUTHOR(S): Guerinot,-M.L.; Patriquin,-D.G. AUTHOR AFFILIATION: Univ. Maryland, Dept. Microbiol., College Park, MD 20742, USA SOURCE (BIBLIOGRAPHIC CITATION): MAR.-BIOL. 1981. vol. 62, no. 2/3, pp. 197-207 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Dinitrogen fixation associated with bacteria in the gastrointestinal tract of sea urchins appears to be a widespread phenomenon: sea urchins from the tropics (Diadema antillarum, Echinometra lacunter, Tripneustes ventricosus ), the temperature zone (Strongylocentrotus droebachiensis ) and the arctic (S. droebachiensis ) exhibited nitrogenase activity (C sub(2)H sub(2) reduction). Pronounced seasonal variation was found in nitrogenase activity of temperate sea urchins feeding on kelp (Laminaria) spp.) and eelgrass (Zostera marina ). The mean monthly nitrogenase activity was inversely correlated with the nitrogen content of the sea urchin's food, which varied up to fivefold over the course of a year. The highest rate of nitrogenase activity recorded for a temperate sea urchin during the 14 month sampling period was 11.6 mu g N fixed g wet wt-1 d super(-1), with a yearly mean activity of 1.36 mu g N fixed g wet wt super(-1) d super( -1). Studies with super(15)N confirmed the C sub(2)H sub(2) reduction results and showed incorporation of microbially-fixed nitrogen into S. droebachiensis) demonstrating that N sub(2) fixation can be a source of N for the sea urchin. Laboratory experiments indicated that part of the sea urchin's (S. droebachiensis)) normal gastrointestinal microflora is responsible for the observed nitrogenase activity. DESCRIPTORS: nitrogen-fixation; enzymatic-activity; intestine-; associations-ecological; food-organisms; Bacteria-; Echinoidea-; Diadema-antillarum; Echinometra -lacunter; Tripneustes-ventricosus; Strongylocentrotus-droebachiensis; Laminaria-; Zostera-marina CLASSIFICATIONS: Productivity,-Ecosystems,-Species-Interactions:-Species-interactions: -General-1483; Autecology:-Nutrition-and-feeding-habits-1425 JOURNAL ANNOUNCEMENT: Biological-Sciences-and-Living-Resources (Q1) ACCESSION NUMBER: 0127127 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 218 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Sea urchin sperm bioassay for sewage and chlorinated seawater and its relation to fish bioassays. AUTHOR(S): Dinnel,P.A.; Stober,Q.J.; DiJulio,D.H.-(Fish.-Res.-Inst.,-Univ.-Washington, -Seattle,-WA-98195,-USA) SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Environ.-Res., 1981 5(1), 29-39 PUBLICATION YEAR: 1981 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Bioassays were conducted with sea urchin (Strongylocentrotus droebachiensis -) and sand dollar (Dendraster excentricus- sperm to determine the toxicity of chlorinated and unchlorinated sewage effluent and chlorinated and brominated seawater. The sperm cells were exposed to seawater dilutions of each toxicant for 5-15 min. The fertilisation of eggs served as the indicators of sperm viability. The effective concentrations which reduced fertilisation success by 50% averaged 2.2 and 4.8% chlorinated and unchlorinated sewage in seawater, respectively. The sperm cells were extremely sensitive to chlorinated seawater at concentrations from 0.002 to 0.020 mg/l total residual oxidant (TRO). Brominated seawater proved toxic to sperm in one test at 0.015 mg/l TRO. Results of the sperm bioassays are compared with previous acute and chronic bioassays with fish. DESCRIPTORS: sewage-; chlorine-; Strongylocentrotus-droebachiensis; Dendraster -excentricus IDENTIFIERS: pollution-effects; bioassays-; Echinoidea-; sperm-; toxicity-tests ACCESSION NUMBER: 1008480 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 219 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Hydrocarbons in the intertidal environment of Kachemak Bay, Alaska. AUTHOR(S): Shaw,D.G.; Wiggs,J.N.-(Inst.-Mar.-Sci.,-Univ.-Alaska,-Fairbanks,-AL-99701, -USA) SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Pollut.-Bull., 1980 11(10), 297-300 PUBLICATION YEAR: 1980 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: B (Brackish) ABSTRACT: Intertidal animals and sediment from Kachemak Bay, Alaska were analysed to determine the concentrations of hydrocarbons. At Coal Point the herbivorous limpet Collisella pelta- contained petroleum within its tissues while intertidal algae of the area have previously been shown to accumulate petroleum as a surface coating. At Coal Bay, a locality where both petroleum and coal are present, the filter feeding mussel Mytilus edulis- contained petroleum hydrocarbons whereas the deposit feeding clam Macoma balthica- contained an array of hydrocarbons suggesting detrital coal as the source. Animals higher in the food web including the gastropod Nucella lima- and the urchin Strongylocentrotus droebachiensis- showed no evidence of petroleum. All samples contained biogenic hydrocarbons of algal and planktonic origin. DESCRIPTORS: hydrocarbons-; pollution-monitoring; bioaccumulation-; INE,-USA,-Alaska, -Kachemak-Bay IDENTIFIERS: sediment-analysis; marine-pollution; oil-pollution; food-chains; chemical -behaviour; marine-environments; USA-; Alaska-; Kachemak-Bay; marine -fauna; pollution-levels OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 1066990 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 220 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Benthic macrofauna of new and old lava grounds at Jan Mayen. AUTHOR(S): Gulliksen,B.; Haug,T.; Sandnes,O.K.-(Mar.-Biol.-Stn.,-POB-2550,-Sor -Tromsoya,-N-9001-Tromso,-Norway) SOURCE (BIBLIOGRAPHIC CITATION): Sarsia, 1980 65(2), 137-148 PUBLICATION YEAR: 1980 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A volcanic eruption at Jan Mayen in 1970 created new submarine lava grounds. Eight years later the general ecology of the marine rocky-bottom macrofauna and the succession of colonisation were studied. Benthos down to 30 m were collected from new and old grounds. The faunae on the new and old grounds were more similar in the shallow waters (5-10 m) than in the deep waters (20-30 m). Above 15 m, motile animals, e.g. amphipods, were more frequent than sessile animals, and overall faunal diversity was low. It is suggested that the community at 5-10 m is controlled by physical factors such as strong water movements and scouring by sand and ice. At 20 -30 m the new grounds had a lower diversity, less predators, and a dominance of filter feeders. Space was highly monopolized by Hiatella arctica-, which contributed more than 80% of the total biomass. The old grounds had a higher faunal diversity with no one-species domination and with more predators. It is suggested that Strongylocentrotus droebachiensis- and Tealia felina- are of ultimate importance to the community structure. These differences suggest that the new grounds below 15 m have not yet reached the same successional stage as the old grounds, while above 15 m, where more severe physical conditions limit the community complexity, the new grounds have reached a stage similar to that on the old grounds. DESCRIPTORS: zoobenthos-; colonization-; ANE,-Jan-Mayen IDENTIFIERS: community-composition; vertical-distribution; volcanic-environments; benthos-; marine- OCEAN ZONES: Atlantic-Northeast (ANE) ACCESSION NUMBER: 1012700 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 221 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Podial sensory receptors and the induction of metamorphosis in echinoids. AUTHOR(S): Burke,R.D.-(Smithsonian-Inst.,-Rt.-1,-Box-194-C,-Ft.-Pierce,-FL-33450,-USA) SOURCE (BIBLIOGRAPHIC CITATION): J.-Exp.-Mar.-Biol.-Ecol., 1980 47(3), 223-234 PUBLICATION YEAR: 1980 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ABSTRACT: Larvae of Strongylocentrotus droebachiensis, Lytechinus pictus- and L. variegatus- which are competent to metamorphose display what appears to be substratum-testing behavior prior to metamorphosis. Larvae cease swimming, partially evert the adult rudiment, and walk about examining the substratum with their five primary podia. Larvae either metamorphose or withdraw their podia and resume swimming to settle again elsewhere. Scanning and transmission electron microscopic examinations of the primary podia revealed sensory receptor cells on the rim and on a conical projection at the center of the podial sucker. Each sensory cell has a single short cilium on its apical surface and an axonal process at its base which contributes to the basiepithelial nerve plexus. Mature adults of the same species also have comparable sensory structures on their tube feet suckers. It is suggested that the sensory receptors on the primary podia of settling larvae, although they are not specialized larval structures, may be involved in the perception of tactile stimuli which have been previously demonstrated to be involved in the induction of metamorphosis. DESCRIPTORS: larval-settlement; sense-organs; Echinoidea- IDENTIFIERS: Strongylocentrotus-droebachiensis; Lytechinus-pictus; metamorphosis- ACCESSION NUMBER: 1009480 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 222 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Distribution of fatty acids in lipids of the common Atlantic sea urchin Strongylocentrotus droebachiensis-. AUTHOR(S): Takagi,T.; Eaton,C.A.; Ackman,R.G.-(Univ.-Hokkaido,-Hakodate,-Japan) SOURCE (BIBLIOGRAPHIC CITATION): Can.-J.-Fish.-Aquat.-Sci., 1980 37(2), 195-202 NOTES: Incl. bibliogr.: 42 ref. PUBLICATION YEAR: 1980 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Lipid classes and fatty acid details of S. droebachiensis- harvested in subtidal water near Halifax, and in deep water in St. Margaret's Bay, were compared. All samples contained an eicosenoic acid with 5,6-ethylenic unsaturation and two non-methylene-interrupted eicosadienoic acids (NMID) with the one 5,6 bond and a second in either the 11,12 or 13,14 positions. Structures were identified by combinations of ozonolysis, partial hydrazine reduction and argentation-TLC and by mass spectra of pyrrolidine derivatives. No 3,11-eicosadienoic acid was observed and elongation of CSUB-20 materials with few ethylenic bonds to CSUB-22 homologues was confined to 11-20:1 and to the minor 5,13-20:2 NMID and did not include either the relatively important 5-20:1 monoene or the 5,11-20:2 NMID. Individual animals showed considerable variation in total lipid and lipid classes, but the constituent distribution of the fatty acids with 5,6 unsaturation, irrespective of the nutritional status of the animal, suggests a basic role in membrane function. DESCRIPTORS: fatty-acids; lipids-; Strongylocentrotus-droebachiensis; ANW,-Canada,-Nova -Scotia IDENTIFIERS: biochemical-composition; Echinoidea- OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0000870 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 223 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Role of gut flora in the transfer of amino acids through a marine food chain. AUTHOR(S): Fong,W.; Mann,K.H.-(Dep.-Oceanogr.,-The-Univ.-British-Columbia,-Vancouver -V6T-1W5,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): Can.-J.-Fish.-Aquat.-Sci., 1980 37(1), 88-96 PUBLICATION YEAR: 1980 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The gut of the sea urchin Strongylocentrotus droebachiensis- has between 2 x 10SUP-8 and 6 x 10SUP-9 bacteria/mL of gut contents. When these bacteria are present, radioactive carbon fed to the urchins as either glucose or cellulose appears in all of the protein amino acids of the gonads. However, when the gut flora is suppressed by a mixture of antibiotics, injection of the sea urchins with radioactive glucose results in the labeling of some of the amino acids (nonessential amino acids) but not others (essential amino acids). These results imply that: (a) sea urchins have the ability to digest cellulose, probably with the aid of the gut flora; (b) intestinal microorganisms can synthesize essential amino acids; and (c) amino acids of microbial origin are available to the sea urchins. The amino acid compositions of (1) kelp (Laminaria longicruris)-, (2) sea urchin intestinal microflora, and (3) sea urchins, were determined over a yearly cycle. The amino acid composition of kelp and microbes were compared as a source of nutrient for the sea urchins, using as indications: overall similarity in compositions, essential amino acid index, and percentage of total amino acid that is essential. All three comparative methods show that the microbial protein is of higher nutritive value than the kelp protein. DESCRIPTORS: amino-acids; food-chains; micro-organisms; intestines-; Strongylocentrotus -droebachiensis; ANW,-Canada IDENTIFIERS: detritus-; metabolism-; digestion-; Laminaria-longicruris; Echinoidea- OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 0000090 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 224 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Trace metals in fucoid algae and purple sea urchins near a high Arctic lead/zinc ore deposit. AUTHOR(S): Bohn,A.-(BC-Res.,-3650-Wesbrook-Mall,-Vancouver,-BC-V6S-2L2,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Pollut.-Bull., 1979 10(11), 325-327 PUBLICATION YEAR: 1979 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Seaweed (Fucus distichus)- and urchins (Strongylocentrotus droebachiensis)- accumulate Fe and Zn to higher concentrations near a Pb/Zn ore body than further away. The concentration of 3 metals (Cu, Fe and Zn) in seaweed increase with age of tissue. As and Cd are lowest in tissue of intermediate age, suggesting a reversible bonding mechanism for the two elements. Concentrations of Fe in whole urchins, and Zn in the gonads, are higher than concentrations in Fucus- tips, which represent a lower level in the food web, Fe is higher in whole sea urchins than in their gonads. For As and Zn the relationship is reversed. DESCRIPTORS: trace-metals; bioaccumulation-; Fucus-distichus; Stronglyocentrotus -droebachiensis; PNW,-Canada,-Baffin-I. IDENTIFIERS: Phaeophyta-; Echinoidea-; Canada-; Baffin-I.; islands-; trace-elements; metals-; algae-; pollution-indicators; marine-pollution; pollution -monitoring; coastal-waters; indicator-organisms; Algae- OCEAN ZONES: Polar-Arctic-Westward (PNW) ACCESSION NUMBER: 0037230 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 225 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Fecundity and reproductive effort in the blue mussel (Mytilus edulis-), the sea urchin (Strongylocentrotus droebachiensis-), and the snow crab (Chionoecetes opilio-) from populations in Nova Scotia and Newfoundland. AUTHOR(S): Thompson,R.J.-(Mar.-Sci.-Res.-Lab.,-Memorial-Univ.-Newfoundland,-St.-John' -s,-Nfld.-A1C-5S7,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): J.-Fish.-Res.-Board-Can., 1979 36(8), 955-964 NOTES: Includes bibliography; 53 ref. PUBLICATION YEAR: 1979 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article); Z (Bibliography) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Fecundity varies from year to year in M. edulis- from Petpeswick Inlet, N.S., and from Bellevue, Nfld. This observation is consistent with recent theory that suggests that reproductive effort (that proportion of the energy budget allocated to reproduction) should be variable in animals such as marine bivalves that are unable to 'predict' the quality of the environment for their juveniles. Estimates of fecundity in S. droebachiensis- and C. opilio- are also presented. Reproductive effort increases with advancing age in the three species of invertebrates studied, although in the mussel the transition from growth to reproduction is more gradual than it is in the sea urchin or the female snow crab, which exhibit early growth and delayed reproduction. The degree to which the growth and reproductive phases are separated in each species may be determined in part by the predictability of the food supply. The allocation of resources primarily to growth rather than to reproduction in young (small) individuals may be seen as a response to selective pressure resulting from higher mortality and from competition. DESCRIPTORS: population-dynamics; fecundity-; reproduction-biology; Mytilus-edulis; Strongylocentrotus-droebachiensis; Chionoecetes-opilio; ANW,-Canada IDENTIFIERS: environmental-conditions; growth-; Bivalvia-; Echinoidea-; Malacostraca- OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 9004080 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 226 of 241 in ASFA 1978-1987 TITLE (ENGLISH): D-mannitol interferes with amino acid analysis of marine organisms. AUTHOR(S): Fong,W.; O'-Dor,R.K.-(Inst.-Oceanogr.,-Univ.-British-Columbia,-Vancouver, -BC-V6T-1W5,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): J.-Fish.-Res.-Board-Can., 1979 36(9), 1134-1137 PUBLICATION YEAR: 1979 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ABSTRACT: Acid hydrolysis of a protein in the presence of D-mannitol, a common constituent of marine algae, can cause significant reductions in the recovery of a number of amino acids. The new compounds formed by the interactions of D-mannitol and these amino acids may interfere in the chromatographic analysis of other amino acids. The recoveries of most of the amino acids appear to be either directly or inversely proportional to the amount of D-mannitol added to a protein sample before acid hydrolysis. These results suggest that it is necessary to determine the effects of contaminants in a sample of protein(s) on the recoveries of amino acids during routine acid hydrolysis. DESCRIPTORS: carbohydrates-; amino-acids; Laminaria-longicruris; Strongylocentrotus -droebachiensis IDENTIFIERS: biochemistry-; seaweeds- ACCESSION NUMBER: 9004490 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 227 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Toxic effects of aqueous extracts of Ekofisk crude oil, crude oil fractions, and commercial oil products on the development of sea urchin eggs. AUTHOR(S): Falk-Peterson,I.-B.-(Inst.-Biol.-and-Geol.,-Univ.-Tromso,-N-9001-Tromso, -Norway) SOURCE (BIBLIOGRAPHIC CITATION): Sarsia, 1979 64(3), 161-169 PUBLICATION YEAR: 1979 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Embryos of 2 sea urchin species, Strongylocentrotus droebachiensi- and S.pallidus-, were studied. Effects were observed directly under the light microscope, and indirectly by electron microscopical investigations (TEM and SEM). Ekofisk crude oil extract had a moderate effect during early development, but affected the embryos strongly during differentiation. BP -gasoline and kerosine extracts caused effects at rather high total hydrocarbon concentrations, whereas gas oils, residue and particularly BP fuel oil No. 6 extracts were more toxic. TEM-studies revealed an increasing aggregation of electron-dense, lipid-like granules in the cells of affected larvae. SEM-studies did not show differences in surface ultrastructure. DESCRIPTORS: pollution-effects; oil-pollution; embryonic-development; Strongylocentrotus -droebachiensis; Stronglyocentrotus-pallidus IDENTIFIERS: toxicity-tests; eggs-; development-; oil-; effects-on ACCESSION NUMBER: 9175520 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 228 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Isolation and characterization of two forms of a cytoskeleton. AUTHOR(S): Edds,K.T.-(Dep.-Anat.-Sci.,-SUNY-Buffalo,-Buffalo,-NY-14214,-USA) SOURCE (BIBLIOGRAPHIC CITATION): J.-Cell-Biol., 1979 83(1), 109-115 PUBLICATION YEAR: 1979 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Isolated petaloid coelomocytes from the sea urchin Strongylocentrotus droebachiensis- transform to a filopodial morphology in hypotonic media. Electron micrographs of negatively stained Triton-insoluble cytoskeletons show that the petaloid form consists of a loose net of microfilaments while the filopodial form consists of paracrystalline bundles of microfilaments. Actin is the major protein of both forms of the cytoskeleton. Additional polypeptides have molecular weights of approx 220,000, 64,000, 57,000, and 27,000 daltons. Relative to actin the filopodial cytoskeletons have an average of 2.5 times as much 57k polypeptide as the petaloid cytoskeletons. Treatment with 0.25M NaCl dissociates the filament bundles into individual actin filaments free of the actin-associated polypeptides. Thus, one or more of these actin -associated polypeptides may be responsible for crosslinking the actin filaments into bundles and maintaining the three-dimensional nature of the cytoskeletons. DESCRIPTORS: cytology-; ultrastructure-; cell-constituents; Strongylocentrotus -droebachiensis IDENTIFIERS: proteins- ACCESSION NUMBER: 9180460 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 229 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Ecology of the sea urchin Strongylocentrotus droebachiensis- of the Barents Sea: metabolism and regulation of abundance. AUTHOR(S): Propp,M.V.-(Lab.-Exp.-Hydrobiol.,-Inst.-Mar.-Biol.,-Far-Eastern-Sci.-Cent., -Acad.-Sci.-USSR,-Vladivostok,-USSR) SOURCE (BIBLIOGRAPHIC CITATION): Sov.-J.-Mar.-Biol., 1977 3(1), 27-37 PUBLICATION YEAR: 1977 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The authors studied the distribution, growth, vital balances (energy, nitrogen, and phosphorus), and regulation of abundance of S. droebachiensis-, in the region of the Murmansk Coast of the Barents Sea. It is demonstrated that abundance, biomass, and mean weight of the specimen decrease with depth. Structure of the population differs in different years, and notions of population stability are not applicable. Mortality is high after six years. Abundance is mainly regulated by the quantity of algae serving as food. Rations are determined to a greater extent by the nitrogen and phosphorus requirements than by the energy value. The surplus of organic matter (about 60% of transformed food) is excreted into the water in the form of dissolved organic matter. The efficiency of nitrogen, phosphorus, and energy utilization for growth and reproduction attains 80, 60, and 30%, respectively. Grazing of algae is very intensive and can determine the composition and distribution of bottom communities. The requirements of the sea urchin attain 1000 kcal/mSUP-2 annually and exceed productivity of the bottom algae; the deficit is covered as a result of the drift of plant residues from the littoral. DESCRIPTORS: marine-ecology; Strongylocentrotus-droebachiensis; PNE,-Barents-Sea IDENTIFIERS: ecological-distribution; growth-; metabolism-; community-composition OCEAN ZONES: Polar-Arctic-Eastward (PNE) ACCESSION NUMBER: 9018220 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 230 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Energy metabolism of echinoderms from the Barents Sea and Sea of Japan. AUTHOR(S): Ryabushko,V.I.-(Lab.-Exp.-Hydrobiol.,-Inst.-Mar.-Biol.,-Far-East-Sci. -Cent.,-Acad.-Sci.-USSR,-Vladivostok-690022,-USSR) SOURCE (BIBLIOGRAPHIC CITATION): Sov.-J.-Mar.-Biol., 1978 4(2), 605-610 PUBLICATION YEAR: 1978 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Under investigation was the rate of oxygen consumption of sea-urchins Strongylocentrotus droebachiensis, S. nudus, S. intermedius, Echinus esculentus-, starfishes Asterias rubens, Henricia sanguinolenta, Crossaster papposus, Solaster endeca, Pteraster militaris, Patiria pectinifera, Aphelasterias japonica-, and sea cucumbers Cucumaria frondosa -. Equations were obtained of the dependence of oxygen consumption on dry body mass at different seasons of the year. Empirical equations are presented of the metabolism of echinoderms linking the rate of oxygen consumption with body mass and temperature. Probable causes of the change in power function with temperature are discussed. DESCRIPTORS: oxygen-consumption; temperature-efects; Echinodermata-; INW,-Japan-Sea; PNE,-Barents-Sea IDENTIFIERS: metabolism-; body-weight OCEAN ZONES: Pacific-Northwest (INW); Polar-Arctic-Eastward (PNE) ACCESSION NUMBER: 9018760 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 231 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Echinoid larvae from the northeast Pacific (with a key and comment on an unusual type of planktotrophic development). AUTHOR(S): Strathmann,R.R.-(Dep.-Zool.-and-Friday-Harbor-Lab.,-Univ.-Washington, -Friday-Harbor,-WA-98250,-USA) SOURCE (BIBLIOGRAPHIC CITATION): Can.-J.-Zool., 1979 57(3), 610-616 PUBLICATION YEAR: 1979 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Larvae of all seven species of echinoids occurring in coastal waters from southern British Columbia to central California have been reared through metamorphosis. Larvae of Dendraster excentricus, Brisaster latifrons-, and Strongylocentrotus franciscanus- can be distinguished from all others by skeletal traits alone. Living larvae of Strongylocentrotus droebachiensis- and Strongylocentrotus purpuratus- can be distinguished from all others by color of pigment spots combined with skeletal differences. Larvae of Allocentrotus fragilis- and Strongylocentrotus pallidus- have similar skeletons and pigment spots of the same color, so it is difficult to identify specimens even if they are alive. A key is provided for identification of echinoplutei. Development of Brisaster latifrons- is similar to that of Brisaster fragilis- in the Atlantic. The development is unusual for echinoderms in that large eggs develop into large feeding larvae with a long pelagic period. Moreover, the juveniles formed at metamorphosis have about the same diameter as juveniles of echinoids with much smaller eggs but similar pelagic periods. DESCRIPTORS: larvae-; larval-development; identification-keys; Echinoidea-; INE,-Pacific IDENTIFIERS: reari-; morphology-organisms OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 9093730 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 232 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The influence of diet on the oxygen uptake of the sea urchins, Tripneustes ventricosus and Strongylocentrotus droebachiensis. AUTHOR(S): Lilly,G.R.-(Dep.-Fish.-and-the-Environ.,-Fish.-and-Mar.-Serv.,-Res.-and -Resour.-Serv.,-Newfoundland-Regions,-3-Water-St.,-St.-John'-s, -Newfoundland-A1C-1A1,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): Comp.-Biochem.-Physiol., 1979 62A(2), 463-470 PUBLICATION YEAR: 1979 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The influence of different natural foods on the rate of oxygen uptake of two species of sea urchins was examined. The rate of oxygen uptake of specimens of T. ventricosus was greater in those fed with the brown alga, Sargassum sp than in those fed with the angiosperm, Thalassia testudinum. When spcimens of S. droebachiensis were fed following a period of food deprivation, the increase in the rate of oxygen uptake was higher in individuals fed with the brown alga, Nereocystis luetkeana, than in individuals fed with the angiosperm, Zostera marina. This difference is attributed to a higher specific dynamic action resulting from a greater rate of food absorption in urchins fed with N. luetkeana. DESCRIPTORS: respiration-; food-composition; Tripneustes-ventricosus; Strongylocentrotus -droebachiensis IDENTIFIERS: diets- ACCESSION NUMBER: 9050250 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 233 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Behavioral ecology of Strongylocentrotus doebachiensis (Muller) (Echinodermata: Echinoidea): aggregating behavior and chemotaxis. AUTHOR(S): Garnick,E.-(Boston-Univ.-Mar.-Program,-Mar.-Biol.-Lab.,-Woods-Hole,-MA,-USA) SOURCE (BIBLIOGRAPHIC CITATION): Oecologia, 1978 37(1), 77-84 PUBLICATION YEAR: 1978 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Field observation indicated that extensive aggregation behavior occurs in S. droebachiensis, an important echinoid herbivore in rocky subtidal zones of northern New England. The relationship of this behavior to the behavioral ecology of this species was investigated. Laboratory studies indicated that urchins are chemically sensitive to the stimuli of food and other urchins. Quantitative field experiments with tagged animals and transects showed the existence of two types of aggregations: feeding and nonfeeding, which appear to be pervasive phenomena in the biology of S. droebachiensis. It is concluded that, depending upon their hunger state, urchins shuttle between feeding aggregations in exposed locations and non -feeding aggregations located in relatively sheltered areas (where they spend most of their time). Individuals of S. droebachiensis aggregate actively through response to other urchins in the form of chemotaxis. The aggregative behavior may be maintained for its selective value in terms of defense from predation and, to lesser extents, facilitation of feeding and breeding. DESCRIPTORS: feeding-behaviour; chemotaxis-; Strongylocentrotus-droebachiensis IDENTIFIERS: tagging-; herbivores-; controlled-conditions ACCESSION NUMBER: 9001120 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 234 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Length of pelagic period in echinoderms with feeding larvae from the northeast Pacific. AUTHOR(S): Strathmann,R.-(Dep.-Zool.-and-Friday-Harbor-Lab.,-Univ.-Washington,-Friday -Harbor,-WA-98250,-USA) SOURCE (BIBLIOGRAPHIC CITATION): J.-Exp.-Mar.-Biol.-Ecol., 1978 34(1), 23-27 PUBLICATION YEAR: 1978 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Minimum and maximum times from fertilization to settling are reported for larvae reared in the laboratory from 12 species of echinoderms representing four classes. For the holothuroid Parastichopus californicus- the maximum time observed was 13 weeks; for the asteroids Luidia foliolata, Pisaster ochraceus-, and Pycnopodia helianthoides- the maxima were 20, 32, and 21 weeks, respectively; for the ophiuroid Ophiopholis aculeata- the maximum was 32 weeks; for the echinoids Brisaster latifrons, Dendraster excentricus, Allocentrotus fragilis-, and Strongylocentrotus droebachiensis-, maxima were 24, 23, 36, and 21 weeks, respectively. The maximum pelagic periods in each class of echinoderms were approximately double other estimates based on cultured larvae. The pelagic periods in these cultures suggest a capacity for extensive dispersal in nature. DESCRIPTORS: development-biological; pelagic-environment; Echinodermata-; INE,-Pacific IDENTIFIERS: larvae-; dispersion- OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 9023210 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 235 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Reproductive cycle of the green sea urchin, Strongylocentrotus droebachiensis. AUTHOR(S): Himmelman,J.H.-(Minist.-Ind.-Commer.,-2700-Einstein,-Quebec-G1P-3W8,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): Can.-J.-Zool., 1978 56(8), 1828-1836 PUBLICATION YEAR: 1978 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The gonadal index cycle of the echinoid Strongylocentrotus droebachiensis is described from observations on the Atlantic and Pacific coasts of Canada. An annual cycle, with spring spawning, is evident, but the exact timing of spawning and of gonadal growth varies. Consideration is given to controlling factors, using information from the present and previous studies. A number of gonadal events begin abruptly, which suggests they are controlled externally. An increase in energy channeled into gonadal growth in midsummer may be stimulated by an environmental cue. However, advanced gonadal growth will occur when excess food is available, and none will occur if food is not available. Spawning is not closely correlated with temperature, but records from the North Pacific, Arctic, and North Atlantic Oceans show that spawning is synchronized with the spring phytoplankton increase. An experimental study has confirmed that phytoplankton is the spawning cue. Concurrent observations of Strongylocentrotus purpuratus show a prolonged spawning, compared with S. droebachiensis, suggesting a different mechanism initiating spawning. DESCRIPTORS: reproduction-biology; spawning-seasons; algal-blooms; Strongylocentrotus -droebachiensis; Canada-Coasts IDENTIFIERS: reproductive-organs; biological-rhythms; physiology-; environmental -effects; phytoplankton- ACCESSION NUMBER: 8211100 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 236 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Distance chemoreception and vision in the selection of prey by American lobster (Homarus americanus). AUTHOR(S): Hirtle,-R.W.M.; Mann,-K.H.-(Dep.-Geol.,-McMaster-Univ.,-Hamilton,-Ont.-L8S -4M1,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): J.-Fish.-Res.-Board-Can., 1978 35(7), 1006-1008 PUBLICATION YEAR: 1978 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ABSTRACT: Lobsters responded positively to the waterborne odor of intact living crabs (Carcinus maenas), sea urchins (Stronglyocentrotus droebachiensis), and mussels (Mytilus edulis). The frequency of response was higher and the response time shorter to crabs than to sea urchins or mussels. Lobsters also responded to the sight of moving crabs or moving sea urchins, but not to the sight of stationary specimens. Crabs are probably more attractive to lobsters because of their odor and their greater activity, compared with sea urchins or mussels. DESCRIPTORS: chemoreception-; feeding-behaviour; Homarus-americanus IDENTIFIERS: vision-; predation-; food-organisms; activity-patterns; Carcinus-maenas; Strongylocentrotus-droebachiensis; Mytilus-edulis ACCESSION NUMBER: 8003510 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 237 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Destruction of kelp-beds by sea-urchins: a cyclical phenomenon or irreversible degradation? AUTHOR(S): Mann,-K.H.-(Dalhousie-Univ.,-Dep.-Biol.,-Halifax,-N.S.,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): Helgol.-Wiss.-Meeresunters., ISSN-0017-9957 1977 30(1-4), 455-467 PUBLICATION YEAR: 1977 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: A stable kelp-bed ecosystem in St. Margaret's Bay, Nova Scotia (Canada), had as its main producers Laminaria longicruris and L. digitata. Most algal production was exported as detritus, but there was a moderate population of herbivores, mainly the sea urchins Strongylocentrotus droebachiensis. These were eaten by crabs, Cancer irroratus and by lobsters, Homarus americanus. Lobsters also preyed on crabs. Beginning in 1968, sea urchins became locally abundant and overgrazed the kelp beds, converting large areas to urchin-dominated barren grounds. Almost all kelp beds in St. Margaret's Bay (140 km-SUP-2-) have now been destroyed. During the same period, lobster biomass decreased, and the hypothesis was put forward that reduction in lobster predation led to increased urchin abundance and kelp bed destruction. Evidence is presented for the hypothesis that urchin-dominated barren grounds are a new, stable configuration of the ecosystem, and that a long-term decrease in primary and secondary productivity of these coastal waters can be expected. DESCRIPTORS: food-chains; ecosystems-; Strongylocentrotus-droebachiensis; ANW,-Canada, -Nova-Scotia IDENTIFIERS: grazing-; energy-flow OCEAN ZONES: Atlantic-Northwest (ANW) ACCESSION NUMBER: 7011940 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 238 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Electron microscope study of the digestive system of Strongylocentrotus droebachiensis (Echinodermata:Echinoidae). AUTHOR(S): Tokin,-I.B.; Filimonova,-G.F.-(USSR-Acad.-Sci.,-Inst.-Mar.-Biol.,-Dalnie -Zelentzy,-Murmanskaya-Obl.,-USSR) SOURCE (BIBLIOGRAPHIC CITATION): Mar.-Biol. 1977 44(2), 143-155 PUBLICATION YEAR: 1977 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: The fine structure of esophagus, stomach and intestinal epithelial cells of the sea urchin S.droebachiensis have been examined. Three types of mucosal cells secreting neutral, acid and sulfated mucopolysaccharides have been found in the esophagus. The modes of origin of different types of mucous granules are described. Storage and zymogen cells have been identified in the stomach epithelium. Storage cells are adapted for intracellular digestion and synthesis of nutritive substances. Zymogen cells are adapted for enzyme synthesis. The columnar cells occur in the intestinal epithelium; they are adapted for nutrient absorption and lipid storage. Digestion in different parts of the digestive tract is considered in context with the ultrastructural and histochemical data obtained. Some problems concerning the relation between intracellular and extracellular digestion are discussed. DESCRIPTORS: digestive-system; histology-; Strongylocentrotus-droebachiensis IDENTIFIERS: electron-microscopy; secretory-organs; enzymes- ACCESSION NUMBER: 8003840 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 239 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Selection of prey by American lobsters (Homarus americanus) when offered a choice between sea urchins and crabs. AUTHOR(S): Evans,-P.D.; Mann,-K.H.-(Dep.-Biol.,-Dalhousie-Univ.,-Halifax,-NS-B3H-4J1, -Canada) SOURCE (BIBLIOGRAPHIC CITATION): J.-Fish.-Res.-Board-Can., 1977 34(11), 2203-2207 PUBLICATION YEAR: 1977 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English; French PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Homarus americanus were presented with various numerical combinations of sea urchins (Strongylocentrotus droebachiensis) and rock crabs (Cancer irroratus) in long-term laboratory feeding experiments. They exhibited a 5:1 preference for crabs when the numerical ratio of urchins to crabs varied from 0-.-25:1 to 8:1. Lobsters presented with a superabundance of sea urchins (urchin:crab ratios of 16:1 and 100:1) maintained relatively constant proportions of urchins and crabs in their diet. Direct observation indicated that lobsters feed selectively. Their role as key predators in kelp-sea urchin communities is discussed. DESCRIPTORS: feeding-behaviour; controlled-conditions; predators-; Homarus-americanus; Strongylocentrotus-droebachiensis; Cancer-irroratus IDENTIFIERS: energy-budget; nutritional-requirements; food-availability; seaweeds-; food -organisms ACCESSION NUMBER: 8000230 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 240 of 241 in ASFA 1978-1987 TITLE (ENGLISH): The evolution of nonrepetitive DNA in sea urchins. AUTHOR(S): Harpold,-M.M.; *-Craig,-S.P.-(Dep.-Biol.,-Univ.-Carolina,-Columbia,-SC -29208,-USA) SOURCE (BIBLIOGRAPHIC CITATION): Differentiation, 1978 10(1), 7-11 PUBLICATION YEAR: 1978 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Molecular hybridization of nuclear DNAs has been employed to study the evolution of nonrepetitive DNA sequences in 4 species of sea urchin. The data indicate that the extent of homology between the nonrepetitive DNA sequences of Strongylocentrotus purpuratus, S. droebachiensis, S. franciscanus, and Lytechinus pictus confirms the phylogenetic relationship established through palaeontological evidence. The average rate of divergence of nonrepetitive DNA sequences was found to be approx 0-.-22% per million years. In addition, a small fraction (approx 14%) of the nonrepetitive DNA sequences is highly conserved between S. purpuratus and L. pictus after 120-200 million years divergence. This study may provide a basis for the use of interspecific hybrid embryos of these organisms to investigate the evolution and importance of certain DNA sequences in early developmental processes leading to cell differentation. DESCRIPTORS: evolution-; deoxyribonucleic-acid; Strongylocentrotus-; Lytechinus-pictus; Strongylocentrotus-purpuratus; Strongylocentrotus-droebachiensis; Strongylocentrotus-franciscanus IDENTIFIERS: DNA-; nonrepetitive-; sea-urchin; sequence- ACCESSION NUMBER: 8114740 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/ Record 241 of 241 in ASFA 1978-1987 TITLE (ENGLISH): Benthic community modification and recovery following intensive grazing by Strongylocentrotus droebachiensis. AUTHOR(S): Foreman,-R.E.-(Univ.-British-Columbia,-Dep.-Bot.,-Vancouver,-Canada) SOURCE (BIBLIOGRAPHIC CITATION): Helgol.-Wiss.-Meeresunters, ISSN-0017-9957 1977 30(1-4), 468-484 PUBLICATION YEAR: 1977 LANGUAGE OF TEXT: English LANGUAGE OF SUMMARIES: English PUBLICATION TYPE: J (Journal-Article) ENVIRONMENTAL REGIME: M (Marine) ABSTRACT: Intensive S. droebachiensis grazing of a previously sampled one-hectare plot provided an opportunity for quantitatively investigating grazing impact on the benthic macrophyte community and community recovery. The changes induced by grazing are compared with changes in a similar plot located nearby which was not grazed. A total of 154 quantitative 0-.-25 m -SUP-2- quadrats were collected in mid-summer, from the two sites, over a 4-year period. The results presented indicate that S. droebachiensis populations in the Strait of Georgia undergo periodic, environmentally controlled, outbreaks and that these outbreaks are responsible for localized pertubation of the benthic macrophyte community. Short-term grazing, where the urchins do not remain in the area, result in a 60% reduction in most community parameters measured. The community requires 2 or 3 years to regain or exceed pre-grazing biomass levels while other parameters had not recovered after 3 years. An estimated 4-6 year period is required to achieve 'ecological climax' (Fishelson, 1977) and 'species enrichment' follows. The largest macrophyte in the Strait of Georgia, the kelp Nereocystis luetkeana, is a successional species whose abundance is controlled, in part, by the successional status of the community. DESCRIPTORS: benthos-; grazing-; Strongylocentrotus-droebachiensis; INE,-Canada,-British -Columbia IDENTIFIERS: biomass-; community-composition OCEAN ZONES: Pacific-Northeast (INE) ACCESSION NUMBER: 7011950 LIBRARY HOLDINGS MESSAGE: Local holdings could not be determined - Consult UW catalogs at http://catalog.lib.washington.edu/search~/