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Scacchi, Species Solecurtidae
BASTERIA, 58: 35-40, 1994 Solecurtus multistriatus (Scacchi, 1835), a good marine bivalve species from the Mediterranean Sea (Bivalvia, Heterodonta: Solecurtidae) Paolo Mariottini 1 Istituto di Scienze Biochimiche, Universita di Parma, 1-43100 Parma, Italy Carlo Smriglio Via di Valle Aurelia 134, 1-00167 Rome, Italy & Cesare Ciommei Via Montebruno 12, 1-00168 Rome, Italy Solecurtus multistriatus (Scacchi, 1835) from the Mediterranean Sea is here reported as a bona fide species; the authors give additional data about its morphology, ecology and distribution. Key words: Bivalvia, Solecurtidae, Solecurtus, morphology, distribution, Mediterranean Sea, Italy. INTRODUCTION In the Mediterranean Sea the genus Solecurtus Blainville, 1824, is represented by three species: S. scopula (Turton, 1822), S. strigilatus (Linne, 1758) and S. multistriatus (Scacchi, 1835). The last taxon was based by Scacchi (1835) (and not Scacchi, 1834, according to Cretella et ah, 1992) on a fossil specimen collected near Gravina, Puglia (Italy). Here the original description is given: "Testa ovali-oblonga, subaequilatera, antice oblique striata, striis approximatis angulo acuto in/lexis. Lata lin. 8, alta lin. 3". In the description 'lin.' (which stands for linea) is a standard size unit. The one adopted by the authors of that time corresponded to 2.25 mm; but, in this case, it is also possible that 'linea' represents a local Sicilian size unit (1.8 mm) as reported by Giannuzzi-Savelli et al. (1986). The author clearly stated that this species differs from the fossil and Recent specimens of "Solene bianco del Renieri" candidus of S. and of [S. (Renier, 1804), synonym scopula] "Solene strigilato" (S. strigilatus) . Nowadays the status of S. -
Molluscs: Bivalvia Laura A
I Molluscs: Bivalvia Laura A. Brink The bivalves (also known as lamellibranchs or pelecypods) include such groups as the clams, mussels, scallops, and oysters. The class Bivalvia is one of the largest groups of invertebrates on the Pacific Northwest coast, with well over 150 species encompassing nine orders and 42 families (Table 1).Despite the fact that this class of mollusc is well represented in the Pacific Northwest, the larvae of only a few species have been identified and described in the scientific literature. The larvae of only 15 of the more common bivalves are described in this chapter. Six of these are introductions from the East Coast. There has been quite a bit of work aimed at rearing West Coast bivalve larvae in the lab, but this has lead to few larval descriptions. Reproduction and Development Most marine bivalves, like many marine invertebrates, are broadcast spawners (e.g., Crassostrea gigas, Macoma balthica, and Mya arenaria,); the males expel sperm into the seawater while females expel their eggs (Fig. 1).Fertilization of an egg by a sperm occurs within the water column. In some species, fertilization occurs within the female, with the zygotes then text continues on page 134 Fig. I. Generalized life cycle of marine bivalves (not to scale). 130 Identification Guide to Larval Marine Invertebrates ofthe Pacific Northwest Table 1. Species in the class Bivalvia from the Pacific Northwest (local species list from Kozloff, 1996). Species in bold indicate larvae described in this chapter. Order, Family Species Life References for Larval Descriptions History1 Nuculoida Nuculidae Nucula tenuis Acila castrensis FSP Strathmann, 1987; Zardus and Morse, 1998 Nuculanidae Nuculana harnata Nuculana rninuta Nuculana cellutita Yoldiidae Yoldia arnygdalea Yoldia scissurata Yoldia thraciaeforrnis Hutchings and Haedrich, 1984 Yoldia rnyalis Solemyoida Solemyidae Solemya reidi FSP Gustafson and Reid. -
Defense Mechanism and Feeding Behavior of Pteraster Tesselatus Ives (Echinodermata, Asteroidea)
Brigham Young University BYU ScholarsArchive Theses and Dissertations 1976-08-12 Defense mechanism and feeding behavior of Pteraster tesselatus Ives (Echinodermata, Asteroidea) James Milton Nance Brigham Young University - Provo Follow this and additional works at: https://scholarsarchive.byu.edu/etd BYU ScholarsArchive Citation Nance, James Milton, "Defense mechanism and feeding behavior of Pteraster tesselatus Ives (Echinodermata, Asteroidea)" (1976). Theses and Dissertations. 7836. https://scholarsarchive.byu.edu/etd/7836 This Thesis is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. DEFENSE MECHANISM AND FEEDING BEHAVIOR OF PTEP.ASTER TESSELATUS IVES (ECHINODER.1v!ATA, ASTEROIDEA) A Manuscript of a Journal Article Presented to the Department of Zoology Brigham Young University In Partial Fulfillment of the Requirements for the Degree Master of Science by James Milton Nance December 1976 This manuscript, by James M. Nance is accepted in its present form by the Department of Zoology of Brigham Young University as satisfying the thesis requirement for the degree of Master of Science. Date ii ACKNOWLEDGMENTS I express my deepest appreciation to Dr. Lee F. Braithwaite for his friendship, academic help, and financial assistance throughout my graduate studies at Brigham Young University. I also extend my thanks to Dr. Kimball T. Harper and Dr. James R. Barnes for their guidance and suggestions during the writing of this thesis. I am grateful to Dr. James R. Palmieri who made the histochemical study possible, and to Dr. -
Enteroctopus Dofleini) and That E
THE EFFECT OF OCTOPUS PREDATION ON A SPONGE-SCALLOP ASSOCIATION Thomas J. Ewing , Kirt L. Onthank and David L. Cowles Walla Walla University Department of Biological Sciences ABSTRACT In the Puget Sound the scallop Chlamys hastata is often found with its valves encrusted with sponges. Scallops have been thought to benefit from this association by protection from sea star predation, but this idea has not been well supported by empirical evidence. Scallops have a highly effective swimming escape response and are rarely found to fall prey to sea stars in the field. Consequently, a clear benefit to the scallop to preserve the relationship is lacking. We propose that octopuses could provide the predation pressure to maintain this relationship. Two condi- tions must first be met for this hypothesis to be supported: 1) Octopuses eat a large quantity of scallops and 2) Octo- puses must be less likely to consume scallops encrusted with sponges than unencrusted scallops. We found that Chlamys hastata may comprise as much as one-third of the diet of giant Pacific octopus (Enteroctopus dofleini) and that E. dofleini is over twice as likely to choose an unencrusted scallop over an encrusted one. While scallops are a smaller portion of the diet of O. rubescens this species is five times as likely to consume scallops without sponge than those with. This provides evidence the octopuses may provide the adaptive pressure that maintains the scallop -sponge symbiosis. INTRODUCTION The two most common species of scallop in the Puget Sound and Salish Sea area of Washington State are Chlamys hastata and Chlamys rubida. -
Comparative Morphology of the Concave Mirror Eyes of Scallops (Pectinoidea)*
Amer. Malac. Bull. 26: 27-33 (2008) Comparative morphology of the concave mirror eyes of scallops (Pectinoidea)* Daniel I. Speiser1 and Sönke Johnsen2 1 Department of Biology, Duke University, Box 90338, Durham, North Carolina 27708, U.S.A., [email protected] 2 Department of Biology, Duke University, Box 90338, Durham, North Carolina 27708, U.S.A., [email protected] Abstract: The unique, double-retina, concave mirror eyes of scallops are abundant along the valve mantle margins. Scallops have the most acute vision among the bivalve molluscs, but little is known about how eyes vary between scallop species. We examined eye morphology by immunofluorescent labeling and confocal microscopy and calculated optical resolution and sensitivity for the swimming scallops Amusium balloti (Bernardi, 1861), Placopecten magellenicus (Gmelin, 1791), Argopecten irradians (Lamarck, 1819), Chlamys hastata (Sow- erby, 1842), and Chlamys rubida (Hinds, 1845) and the sessile scallops Crassadoma gigantea (Gray, 1825) and Spondylus americanus (Hermann, 1781). We found that eye morphology varied considerably between scallop species. The eyes of A. balloti and P. magellenicus had relatively large lenses and small gaps between the retinas and mirror, making them appear similar to those described previously for Pecten maximus (Linnaeus, 1758). In contrast, the other five species we examined had eyes with relatively small lenses and large gaps between the retinas and mirror. We also found evidence that swimming scallops may have better vision than non-swimmers. Swimming species had proximal retinas with inter-receptor angles between 1.0 ± 0.1 (A. balloti) and 2.7 ± 0.3° (C. rubida), while sessile species had proximal retinas with inter-receptor angles between 3.2 ± 0.2 (C. -
· Atlas of the Biology and Distribution of the Sea Scallop Placopecten Magellanicus and Iceland Scallop Chlamys Islandica ' in the Northwest Atlantic
· Atlas of the biology and distribution of the Sea scallop Placopecten magellanicus and Iceland scallop Chlamys islandica ' in the Northwest Atlantic G.A.P. Black, R.K. Mohn, G. Robert, and M.J. Tremblay Benthic Fisheries and Aquaculture Division Biological Sciences Branch Department of Fisheries and Oceans P.O. Box 550 Halifax, Nova Scotia B3J 2S7 1993 Canadian Technical Report of Fisheries and Aquatic Sciences No. 1915 Fisheries and Environment Pkhes et Enviromement .+ Canada Canada Fisheries Service des pkhes and Marine Service et de Ia mer Fisheries and Marine Service Technical Reports These reports contain scientific and technical information that represents an important contribution to existing knowledge but which for some reason may not be appropriate for primary scientific (i.e. Journal) publication. Technical Reports are directed primarily towards a world wide audience and have an international distribution. No restriction is placed on subject matter and the series reflects the broad interests and policies of the Fisheries and Marine Service, namely, fisheries management, technology and development, ocean sciences, and aquatic environ ments relevant to Canada. Technical Reports may be cited as full publications. The correct citation appears above the abstract of each report. Each report will be abstracted in Aquatic Sciences and Fisheries Abstracts and will be indexed annually in the Service's index to scientific and technical publications. Numbers 1-456 in this series were issued as Technical Reports of the Fisheries Research Board of Canada. Numbers 457-714 were issued as Department of the Environment, Fisheries and Marine Service, Research and Development Director ate Technical Reports. The series name was changed with report number 715. -
Glass Sponge Aggregations in Howe Sound
Canadian Science Advisory Secretariat Pacific Region Science Response 2018/032 GLASS SPONGE AGGREGATIONS IN HOWE SOUND: LOCATIONS, REEF STATUS, AND ECOLOGICAL SIGNIFICANCE ASSESSMENT Context The protection of benthic communities and features falls within the mandate of the Department of Fisheries and Oceans (DFO) at the national level under the Oceans Act, Fisheries Act, and under ratified international agreements. The plan to meet conservation targets includes advancing Other Effective Area-Based Conservation Measures (OEABCM), such as fishing closures, to protect sensitive sponge and coral aggregations. Glass sponge reefs are unique habitats found along the Pacific coast of Canada and the United States with historic, ecological, and economic value. They link benthic and pelagic environments by playing important roles in filtration and carbon and nitrogen processing, and acting as silica sinks (Chu et al. 2011, Tréguer and De La Rocha 2013, Kahn et al. 2015). They also form habitat for diverse communities of invertebrates and fish, including those of economic importance (Cook et al. 2008, Chu and Leys 2010, Dunham et al. 2015, 2018). Over the past 15 years, nine glass sponge reef complexes were discovered and mapped in the Strait of Georgia and Howe Sound using remote sensing (Conway et al. 2004, 2005, and 2007) and subsequently ground-truthed by DFO Science using standardized visual survey methods in 2012-2013. In 2014, DFO requested that fishers using bottom-contact gear voluntarily avoid these areas while DFO consulted on formal protection measures. After reviewing important input from the consultation process with First Nations, commercial and recreational fishers, and conservation organizations, formal bottom-contact fishing closures were established, effective June 12, 2015. -
127.Estudio Epidemiologico De Las Poblaciones De Ostion Del Norte Silvestre Y En Cultivo En La
PONTIFICIA UNIVERSIDAD CATOLICA DE VALPARAISO FACULTAD DE RECURSOS NATURALES ESCUELA DE CIENCIAS DEL MAR PROYECTO FIP Nº 2008-61 “ESTUDIO EPIDEMIOLÓGICO DE LAS POBLACIONES DE OSTIÓN DEL NORTE SILVESTRE Y EN CULTIVO EN LA III Y IV REGIONES DEL PAÍS” INFORME FINAL CORREGIDO Valparaíso, 2010 i INFORME FINAL “ESTUDIO EPIDEMIOLÓGICO DE LAS POBLACIONES DE OSTIÓN DEL NORTE SILVESTRE Y EN CULTIVO EN LA III Y IV REGIONES DEL PAÍS” (FIP 2008-61) CONCURSO FONDO DE INVESTIGACION PESQUERA MINISTERIO DE ECONOMIA FOMENTO Y RECONSTRUCCION SUBSECRETARIA DE PESCA UNIDAD EJECUTORA Escuela de Ciencias del Mar Facultad de Recursos Naturales Pontificia Universidad Católica de Valparaíso INVESTIGADOR RESPONSABLE MARIEL CAMPALANS BARNIER ii AGRADECIMIENTOS El equipo de trabajo del presente Proyecto desea expresar sus más sinceros agradecimientos a las siguientes Empresas de Cultivo y Asociaciones de Pescadores Artesanales de la III y IV Regiones, que colaboraron proporcionando los ejemplares durante el desarrollo del Proyecto. Asociación Gremial de Buzos Mariscadores, Pescadores Artesanales y afines de Tongoy. Asociación Gremial de Buzos, Asistentes y Pescadores Artesanales Puerto Aldea. Pescadores Artesanales Caleta Guayacán. Granja Marina Morro Ballena, Bahía Inglesa. Hidrocultivos S.A. Bahía Inglesa y Bahía Salado Cultivos Marinos Caldera Ltda. Pesquera San José S.A. Bahía Tongoy. Inversiones Centinela S.A Invertec Ostimar S.A. Cultivos Marinos Purpuratus S.A. Además queremos agradecer a todos aquellos que de una u otra manera hicieron posible la realización de este Proyecto i PERSONAL PROFESIONAL Y TECNICO PROYECTO FIP 2008-61 “Estudio epidemiológico de las poblaciones de Ostión del Norte silvestre y en cultivo en la III y IV Regiones del país” Pontificia Universidad Católica de Valparaíso (PUCV) Personal Cargo Institución Mariel Campalans B. -
GEM Program Document Appendix A
APPENDIX A. ACRONYMS AND WEB LINKS Note: Not all of these acronyms and Web links are referenced in the GEM Program document. Many are included for general reference purposes. ABC: Acceptable Biological Catch ABWC: Alaska Beluga Whale Committee ABSC (USGS): Alaska Biological Science Center (Biological Resources Division, U.S. Geological Survey) http://www.absc.usgs.gov/research/seabird&foragefish/index.html AC: Alaska Current AC: Arctic Council http://www.arctic-council.org/ ACC: Alaska Coastal Current ACCE: Atlantic Climate and Circulation Experiment ACIA: Arctic Climate Impact Assessment (Arctic Council) http://www.acia.uaf.edu ACRC: Alaska Climate Research Center, http://climate.gi.alaska.edu/ ACT: Alliance for Coastal Technologies ADCED: Alaska Department of Community and Economic Development http://www.dced.state.ak.us ADCP: Acoustic Doppler Current Profilers ADEC: Alaska Department of Environmental Conservation http://www.state.ak.us/dec/home.htm ADEM: Alabama Department of Environmental Management ADEOS-II: Advanced Earth Observing Satellite-II ADFG: Alaska Department of Fish and Game http://www.state.ak.us/adfg/adfghome.htm Division of Commercial Fisheries: http://www.cf.adfg.state.ak.us/cf_home.htm Division of Habitat: http://www.state.ak.us/adfg/habitat/hab_home.htm Division of Subsistence: http://www.state.ak.us/adfg/subsist/subhome.htm Division of Subsistence Whiskers Database Division of Sport Fish: http://www.state.ak.us/adfg/sportf/sf_home.htm ADHSS: Alaska Department of Health & Social Services ADNR: Alaska Department of -
Bryozoan Fouling of the Blue Crab Callinectes Sapidus at Beaufort, North Carolina
BULLETIN OF ~ARINE SCIENCE, 64(3): 513-533, 1999 BRYOZOAN FOULING OF THE BLUE CRAB CALLINECTES SAPIDUS AT BEAUFORT, NORTH CAROLINA Marcus M. Key, Jr., Judith E. Winston, Jared W. Volpe, William B. Jeffries and Harold K. Voris ABSTRACT This study examines the prevalence, intensity, abundance, and spatial distribution of fouling bryozoans on 168 blue crabs, Callinectes sapidus, taken from an estuarine environment in the area of Beaufort, North Carolina. Three epizoic bryozoan species were found on the host crabs. These include Alcyonidium albescens Winston and Key, Membranipora arborescens (Canu ·and Bassler), and Triticella elongata (Osburn). The proportion of blue crabs fouled was 16%. Results indicate female crabs were significantly more fouled than males. This suggests that the prevalence and intensity of bryozoans are dominantly controlled by the migratory habits of the host, since female crabs spend more time in deeper waters of higher salinity where they are more likely to be fouled by bryozoan larvae. The ventral surface was significantly more fouled than the dorsal. The A. albescens colonies were significantly more abundant on the hosts' lateral spines, M. arborescens dominated the subhepatic sector, and T. elongata was most common around the mouth. The costs and benefits of epibiosis are reviewed. The bryozoan/blue crab relationship described here appears to be phoretic. This means there is minimal negative impact on the crab, the relationship is more beneficial to the bryozoans, and there is no special symbiotic relationship between the crab and the bryo zoan. Biofouling of surfaces found in marine environments is a common phenome non. Those that foul ships and pipes are a problem as a result of the increased operating costs resulting from drag and increased corrosion, costs to prevent foul ing, and costs to remove epizoans (Woods Hole Oceanographic Institution, 1952). -
Glass Sponge Aggregations in Howe Sound: Locations, Reef Status, and Ecological Significance Assessment
Canadian Science Advisory Secretariat Pacific Region Science Response 2017/nnn GLASS SPONGE AGGREGATIONS IN HOWE SOUND: LOCATIONS, REEF STATUS, AND ECOLOGICAL SIGNIFICANCE ASSESSMENT Context The protection of benthic communities and features falls within mandate of the Department of Fisheries and Oceans (DFO) at the national level under the Fisheries Act and under ratified international agreements. Canada’s National Conservation Plan was launched in 2011 to advance progress in three priority areas, including conserving and restoring Canada’s lands and waters through safeguarding and enhancing biodiversity and ecosystems through conservation and stewardship actions. The plan to meet these targets includes advancing Other Effective Area-Based Conservation Measures (OEABCM), such as fishing closures, to protect sensitive sponge and coral concentrations. To that end, DFO Fisheries Management committed to implementing at least five new conservation-based fishing closures by 2020. Glass sponge reefs are unique habitats found along the Pacific coast of Canada and the United States with historic, ecological, and economic value. They provide a link between benthic and pelagic environments, play an important role in filtration and carbon and nitrogen processing, act as silica sinks, and form habitat for diverse communities of invertebrates and fish, including those of economic importance (Cook et al. 2008, Chu and Leys 2010, Chu et al. 2011, Tréguer and De La Rocha 2013, Kahn et al. 2015, Dunham et al. 2015, 2017). Over the past 15 years, nine glass sponge reef complexes were discovered and mapped in the Strait of Georgia and Howe Sound using remote sensing (Conway et al. 2004, 2005, and 2007) and subsequently ground-truthed using standardized visual survey methods in 2012-2013. -
Effect of Perkinsus Qugwadi on Various Species and Strains of Scallops
DISEASES OF AQUATIC ORGANISMS Published May 12 Dis Aquat Org l Effect of Perkinsus qugwadi on various species and strains of scallops Susan M. Bower1,*,Janice Blackbourn2, Gary R. Meyerl, David W. Welch' 'Department of Fisheries and Oceans. Pacific Biological Station, Nanaimo, British Columbia V9R 5K6,Canada 2~slandScallops Ltd. 5552 West Island Hwy, Qualicum Beach, British Columbia V9K 2C8, Canada ABSTRACT Japanese scallops Patrnopecten yessoensls Introduced Into Brltlsh Columbia, Canada, as a specles for aquaculture, proved hlghly susceptible to an enzoot~cprotlstan paraslte Perklnsus qug- wadi (initially called SPX) Sporadic occurrence of the paraslte among cultured scallops sornetlrnes lesulted in losses exceeding 90% Native scallops (Chlamys rublda and Chlamys hastata) were resls- tant to infection and the pathogenic effects of the paraslte Weathervane scallops Patrnopecten caun- nus (not amenable to culture but closely related to the Japanese scallop) were not available to test for resistance to ~nfectlonLaboratory and fleld stud~esshowed that first-generat~onprogeny of Japanese scallops that survlved an epizootic outbreak of P qugwadi had a slgnlf~cantincrease In ~es~stanceto infection and resulting mortalities Hybnd scallops, resulting from a cross between Japanese scallop females (from the same group of scallops that survived an epizootlc outbreak of P qugwadi) and weath- ervane scallop males had slrnilar resistance to P qugwad~The ident~ficationof scallop stocks that are res~stantto P qugwadi has faclhtated the development of a scallop culture Industry in Bntish Columbia KEY WORDS: Perlunsus qugwadl . Patinopecten yessoensis. Scallops . D~sease. Resistance INTRODUCTION proached 100% among cultured Japanese scallops (5.0 ? 0.4 cm shell height) and all survivors that were exam- The pi-otistan Perkinsus qugwadi Blackbourn, ined (n = 8) were infected with P.