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CEPHALOPODS 688 Cephalopods
click for previous page CEPHALOPODS 688 Cephalopods Introduction and GeneralINTRODUCTION Remarks AND GENERAL REMARKS by M.C. Dunning, M.D. Norman, and A.L. Reid iving cephalopods include nautiluses, bobtail and bottle squids, pygmy cuttlefishes, cuttlefishes, Lsquids, and octopuses. While they may not be as diverse a group as other molluscs or as the bony fishes in terms of number of species (about 600 cephalopod species described worldwide), they are very abundant and some reach large sizes. Hence they are of considerable ecological and commercial fisheries importance globally and in the Western Central Pacific. Remarks on MajorREMARKS Groups of CommercialON MAJOR Importance GROUPS OF COMMERCIAL IMPORTANCE Nautiluses (Family Nautilidae) Nautiluses are the only living cephalopods with an external shell throughout their life cycle. This shell is divided into chambers by a large number of septae and provides buoyancy to the animal. The animal is housed in the newest chamber. A muscular hood on the dorsal side helps close the aperture when the animal is withdrawn into the shell. Nautiluses have primitive eyes filled with seawater and without lenses. They have arms that are whip-like tentacles arranged in a double crown surrounding the mouth. Although they have no suckers on these arms, mucus associated with them is adherent. Nautiluses are restricted to deeper continental shelf and slope waters of the Indo-West Pacific and are caught by artisanal fishers using baited traps set on the bottom. The flesh is used for food and the shell for the souvenir trade. Specimens are also caught for live export for use in home aquaria and for research purposes. -
An Ecosystem Model of the North Sea to Support an Ecosystem Approach to Fisheries Management: Description and Parameterisation
Science Series Technical Report no.142 An ecosystem model of the North Sea to support an ecosystem approach to fisheries management: description and parameterisation S. Mackinson and G. Daskalov Science Series Technical Report no.142 An ecosystem model of the North Sea to support an ecosystem approach to fisheries management: description and parameterisation S. Mackinson and G. Daskalov This report should be cited as: Mackinson, S. and Daskalov, G., 2007. An ecosystem model of the North Sea to support an ecosystem approach to fisheries management: description and parameterisation. Sci. Ser. Tech Rep., Cefas Lowestoft, 142: 196pp. This report represents the views and findings of the authors and not necessarily those of the funders. © Crown copyright, 2008 This publication (excluding the logos) may be re-used free of charge in any format or medium for research for non-commercial purposes, private study or for internal circulation within an organisation. This is subject to it being re-used accurately and not used in a misleading context. The material must be acknowledged as Crown copyright and the title of the publication specified. This publication is also available at www.Cefas.co.uk For any other use of this material please apply for a Click-Use Licence for core material at www.hmso.gov.uk/copyright/licences/ core/core_licence.htm, or by writing to: HMSO’s Licensing Division St Clements House 2–16 Colegate Norwich NR3 1BQ Fax: 01603 723000 E-mail: [email protected] List of contributors and reviewers Name Affiliation -
Growth, Tolerance to Low Salinity, and Osmoregulation in Decapod Crustacean Larvae
Vol. 12: 249–260, 2011 AQUATIC BIOLOGY Published online June 1 doi: 10.3354/ab00341 Aquat Biol Growth, tolerance to low salinity, and osmoregulation in decapod crustacean larvae Gabriela Torres1, 2,*, Luis Giménez1, Klaus Anger2 1School of Ocean Sciences, Bangor University, Menai Bridge, LL59 5AB, UK 2Biologische Anstalt Helgoland, Foundation Alfred Wegener Institute for Polar and Marine Research, 27498 Helgoland, Germany ABSTRACT: Marine invertebrate larvae suffer high mortality due to abiotic and biotic stress. In planktotrophic larvae, mortality may be minimised if growth rates are maximised. In estuaries and coastal habitats however, larval growth may be limited by salinity stress, which is a key factor select- ing for particular physiological adaptations such as osmoregulation. These mechanisms may be ener- getically costly, leading to reductions in growth. Alternatively, the metabolic costs of osmoregulation may be offset by the capacity maintaining high growth at low salinities. Here we attempted identify general response patterns in larval growth at reduced salinities by comparing 12 species of decapod crustaceans with differing levels of tolerance to low salinity and differing osmoregulatory capability, from osmoconformers to strong osmoregulators. Larvae possessing tolerance to a wider range in salinity were only weakly affected by low salinity levels. Larvae with a narrower tolerance range, by contrast, generally showed reductions in growth at low salinity. The negative effect of low salinity on growth decreased with increasing osmoregulatory capacity. Therefore, the ability to osmoregulate allows for stable growth. In euryhaline larval decapods, the capacity to maintain high growth rates in physically variable environments such as estuaries appears thus to be largely unaffected by the energetic costs of osmoregulation. -
Marine Boring Bivalve Mollusks from Isla Margarita, Venezuela
ISSN 0738-9388 247 Volume: 49 THE FESTIVUS ISSUE 3 Marine boring bivalve mollusks from Isla Margarita, Venezuela Marcel Velásquez 1 1 Museum National d’Histoire Naturelle, Sorbonne Universites, 43 Rue Cuvier, F-75231 Paris, France; [email protected] Paul Valentich-Scott 2 2 Santa Barbara Museum of Natural History, Santa Barbara, California, 93105, USA; [email protected] Juan Carlos Capelo 3 3 Estación de Investigaciones Marinas de Margarita. Fundación La Salle de Ciencias Naturales. Apartado 144 Porlama,. Isla de Margarita, Venezuela. ABSTRACT Marine endolithic and wood-boring bivalve mollusks living in rocks, corals, wood, and shells were surveyed on the Caribbean coast of Venezuela at Isla Margarita between 2004 and 2008. These surveys were supplemented with boring mollusk data from malacological collections in Venezuelan museums. A total of 571 individuals, corresponding to 3 orders, 4 families, 15 genera, and 20 species were identified and analyzed. The species with the widest distribution were: Leiosolenus aristatus which was found in 14 of the 24 localities, followed by Leiosolenus bisulcatus and Choristodon robustus, found in eight and six localities, respectively. The remaining species had low densities in the region, being collected in only one to four of the localities sampled. The total number of species reported here represents 68% of the boring mollusks that have been documented in Venezuelan coastal waters. This study represents the first work focused exclusively on the examination of the cryptofaunal mollusks of Isla Margarita, Venezuela. KEY WORDS Shipworms, cryptofauna, Teredinidae, Pholadidae, Gastrochaenidae, Mytilidae, Petricolidae, Margarita Island, Isla Margarita Venezuela, boring bivalves, endolithic. INTRODUCTION The lithophagans (Mytilidae) are among the Bivalve mollusks from a range of families have more recognized boring mollusks. -
A Biotope Sensitivity Database to Underpin Delivery of the Habitats Directive and Biodiversity Action Plan in the Seas Around England and Scotland
English Nature Research Reports Number 499 A biotope sensitivity database to underpin delivery of the Habitats Directive and Biodiversity Action Plan in the seas around England and Scotland Harvey Tyler-Walters Keith Hiscock This report has been prepared by the Marine Biological Association of the UK (MBA) as part of the work being undertaken in the Marine Life Information Network (MarLIN). The report is part of a contract placed by English Nature, additionally supported by Scottish Natural Heritage, to assist in the provision of sensitivity information to underpin the implementation of the Habitats Directive and the UK Biodiversity Action Plan. The views expressed in the report are not necessarily those of the funding bodies. Any errors or omissions contained in this report are the responsibility of the MBA. February 2003 You may reproduce as many copies of this report as you like, provided such copies stipulate that copyright remains, jointly, with English Nature, Scottish Natural Heritage and the Marine Biological Association of the UK. ISSN 0967-876X © Joint copyright 2003 English Nature, Scottish Natural Heritage and the Marine Biological Association of the UK. Biotope sensitivity database Final report This report should be cited as: TYLER-WALTERS, H. & HISCOCK, K., 2003. A biotope sensitivity database to underpin delivery of the Habitats Directive and Biodiversity Action Plan in the seas around England and Scotland. Report to English Nature and Scottish Natural Heritage from the Marine Life Information Network (MarLIN). Plymouth: Marine Biological Association of the UK. [Final Report] 2 Biotope sensitivity database Final report Contents Foreword and acknowledgements.............................................................................................. 5 Executive summary .................................................................................................................... 7 1 Introduction to the project .............................................................................................. -
Ommastrephidae 199
click for previous page Decapodiformes: Ommastrephidae 199 OMMASTREPHIDAE Flying squids iagnostic characters: Medium- to Dlarge-sized squids. Funnel locking appara- tus with a T-shaped groove. Paralarvae with fused tentacles. Arms with biserial suckers. Four rows of suckers on tentacular clubs (club dactylus with 8 sucker series in Illex). Hooks never present hooks never on arms or clubs. One of the ventral pair of arms present usually hectocotylized in males. Buccal connec- tives attach to dorsal borders of ventral arms. Gladius distinctive, slender. funnel locking apparatus with Habitat, biology, and fisheries: Oceanic and T-shaped groove neritic. This is one of the most widely distributed and conspicuous families of squids in the world. Most species are exploited commercially. Todarodes pacificus makes up the bulk of the squid landings in Japan (up to 600 000 t annually) and may comprise at least 1/2 the annual world catch of cephalopods.In various parts of the West- ern Central Atlantic, 6 species of ommastrephids currently are fished commercially or for bait, or have a potential for exploitation. Ommastrephids are powerful swimmers and some species form large schools. Some neritic species exhibit strong seasonal migrations, wherein they occur in huge numbers in inshore waters where they are accessable to fisheries activities. The large size of most species (commonly 30 to 50 cm total length and up to 120 cm total length) and the heavily mus- cled structure, make them ideal for human con- ventral view sumption. Similar families occurring in the area Onychoteuthidae: tentacular clubs with claw-like hooks; funnel locking apparatus a simple, straight groove. -
Cephalopoda of the North Atlantic: the Family
RICHARD E. TOUNG A Monograph of the LYDE F. E. ROPER ^ r 7 l r ' 1 Cephalopoda of the North Atlantic: The Family SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • 1969 NUMBER 5 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY NUMBER 5 Richard E. Young A Monograph of the and Clyde F. E. Roper ^ 1 1 -• r •» Cephalopoda ot the North Atlantic: The Family Cycloteuthidae SMITHSONIAN INSTITUTION PRESS CITY OF WASHINGTON SERIAL PUBLICATIONS OF THE SMITHSONIAN INSTITUTION The emphasis upon publications as a means of diffusing knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the Insti- tution, Joseph Henry articulated a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge not strictly professional." This keynote of basic research has been adhered to over the years in the issuance of thousands of titles in serial publications under the Smith- sonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Annals of Flight Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology Smithsonian Studies in History and Technology In these series, the Institution publishes original articles and monographs dealing with the research and collections of its several museums and offices and of professional colleagues at other institutions of learning. These papers report newly acquired facts, synoptic interpretations of data, or original theory in specialized fields. -
Geodiversitas 2019 ● 41 ● 9 Directeur De La Publication : Bruno David, Président Du Muséum National D’Histoire Naturelle
geodiversitas 2019 ● 41 ● 9 DIRECTEUR DE LA PUBLICATION : Bruno David, Président du Muséum national d’Histoire naturelle RÉDACTEUR EN CHEF / EDITOR-IN-CHIEF : Didier Merle ASSISTANTS DE RÉDACTION / ASSISTANT EDITORS : Emmanuel Côtez ([email protected]) MISE EN PAGE / PAGE LAYOUT : Emmanuel Côtez COMITÉ SCIENTIFIQUE / SCIENTIFIC BOARD : Christine Argot (MNHN, Paris) Beatrix Azanza (Museo Nacional de Ciencias Naturales, Madrid) Raymond L. Bernor (Howard University, Washington DC) Alain Blieck (chercheur CNRS retraité, Haubourdin) Henning Blom (Uppsala University) Jean Broutin (UPMC, Paris) Gaël Clément (MNHN, Paris) Ted Daeschler (Academy of Natural Sciences, Philadelphie) Bruno David (MNHN, Paris) Gregory D. Edgecombe (The Natural History Museum, Londres) Ursula Göhlich (Natural History Museum Vienna) Jin Meng (American Museum of Natural History, New York) Brigitte Meyer-Berthaud (CIRAD, Montpellier) Zhu Min (Chinese Academy of Sciences, Pékin) Isabelle Rouget (UPMC, Paris) Sevket Sen (MNHN, Paris) Stanislav Štamberg (Museum of Eastern Bohemia, Hradec Králové) Paul Taylor (The Natural History Museum, Londres) COUVERTURE / COVER : Left specimen: Hebertides jurassica Guinot, De Angeli & Garassino, 2007, in dorsal view; Right specimen: Xantho cf. moldavicus (Yanakevich, 1977), in outer lateral view; Background: Panoramic view of the Museum quarry ‘la carrière-musée’ (Channay-sur-Lathan). Geodiversitas est indexé dans / Geodiversitas is indexed in: – Science Citation Index Expanded (SciSearch®) – ISI Alerting Services® – Current Contents® / Physical, -
1. in Tro Duc Tion
Cephalopods of the World 1 1. INTRO DUC TION Patrizia Jereb, Clyde F.E. Roper and Michael Vecchione he increasing exploitation of finfish resources, and the commercial status. For example, this work should be useful Tdepletion of a number of major fish stocks that formerly for the ever-expanding search for development and supported industrial-scale fisheries, forces continued utilization of ‘natural products’, pharmaceuticals, etc. attention to the once-called ‘unconventional marine resources’, which include numerous species of cephalopods. The catalogue is based primarily on information available in Cephalopod catches have increased steadily in the last 40 published literature. However, yet-to-be-published reports years, from about 1 million metric tonnes in 1970 to more than and working documents also have been used when 4 million metric tonnes in 2007 (FAO, 2009). This increase appropriate, especially from geographical areas where a confirms a potential development of the fishery predicted by large body of published information and data are lacking. G.L. Voss in 1973, in his first general review of the world’s We are particularly grateful to colleagues worldwide who cephalopod resources prepared for FAO. The rapid have supplied us with fisheries information, as well as expansion of cephalopod fisheries in the decade or so bibliographies of local cephalopod literature. following the publication of Voss’s review, meant that a more comprehensive and updated compilation was required, The fishery data reported herein are taken from the FAO particularly for cephalopod fishery biologists, zoologists and official database, now available on the Worldwide web: students. The FAO Species Catalogue, ‘Cephalopods of the FISHSTAT Plus 2009. -
Decapoda, Brachyura
APLICACIÓN DE TÉCNICAS MORFOLÓGICAS Y MOLECULARES EN LA IDENTIFICACIÓN DE LA MEGALOPA de Decápodos Braquiuros de la Península Ibérica bérica I enínsula P raquiuros de la raquiuros B ecápodos D de APLICACIÓN DE TÉCNICAS MORFOLÓGICAS Y MOLECULARES EN LA IDENTIFICACIÓN DE LA MEGALOPA LA DE IDENTIFICACIÓN EN LA Y MOLECULARES MORFOLÓGICAS TÉCNICAS DE APLICACIÓN Herrero - MEGALOPA “big eyes” Leach 1793 Elena Marco Elena Marco-Herrero Programa de Doctorado en Biodiversidad y Biología Evolutiva Rd. 99/2011 Tesis Doctoral, Valencia 2015 Programa de Doctorado en Biodiversidad y Biología Evolutiva Rd. 99/2011 APLICACIÓN DE TÉCNICAS MORFOLÓGICAS Y MOLECULARES EN LA IDENTIFICACIÓN DE LA MEGALOPA DE DECÁPODOS BRAQUIUROS DE LA PENÍNSULA IBÉRICA TESIS DOCTORAL Elena Marco-Herrero Valencia, septiembre 2015 Directores José Antonio Cuesta Mariscal / Ferran Palero Pastor Tutor Álvaro Peña Cantero Als naninets AGRADECIMIENTOS-AGRAÏMENTS Colaboración y ayuda prestada por diferentes instituciones: - Ministerio de Ciencia e Innovación (actual Ministerio de Economía y Competitividad) por la concesión de una Beca de Formación de Personal Investigador FPI (BES-2010- 033297) en el marco del proyecto: Aplicación de técnicas morfológicas y moleculares en la identificación de estados larvarios planctónicos de decápodos braquiuros ibéricos (CGL2009-11225) - Departamento de Ecología y Gestión Costera del Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC) - Club Náutico del Puerto de Santa María - Centro Andaluz de Ciencias y Tecnologías Marinas (CACYTMAR) - Instituto Español de Oceanografía (IEO), Centros de Mallorca y Cádiz - Institut de Ciències del Mar (ICM-CSIC) de Barcelona - Institut de Recerca i Tecnología Agroalimentàries (IRTA) de Tarragona - Centre d’Estudis Avançats de Blanes (CEAB) de Girona - Universidad de Málaga - Natural History Museum of London - Stazione Zoologica Anton Dohrn di Napoli (SZN) - Universitat de Barcelona AGRAÏSC – AGRADEZCO En primer lugar quisiera agradecer a mis directores, el Dr. -
Padrões De Distribuição Da Abundância Larvar De Crustáceos Decápodes Na Baía De Cascais
UNIVERSIDADE DO ALGARVE FACULDADE DE CIÊNCIAS DO MAR E DO AMBIENTE PADRÕES DE DISTRIBUIÇÃO DA ABUNDÂNCIA LARVAR DE CRUSTÁCEOS DECÁPODES NA BAÍA DE CASCAIS DISSERTAÇÃO PARA A OBTENÇÃO DO GRAU DE MESTRE EM BIOLOGIA MARINHA ESPECIALIZAÇÃO EM ECOLOGIA E CONSERVAÇÃO MARINHA CARLA ISABEL DE ALMEIDA SANTINHO FARO 2009 UNIVERSIDADE DO ALGARVE FACULDADE DE CIÊNCIAS DO MAR E DO AMBIENTE PADRÕES DE DISTRIBUIÇÃO DA ABUNDÂNCIA LARVAR DE CRUSTÁCEOS DECÁPODES NA BAÍA DE CASCAIS DISSERTAÇÃO PARA A OBTENÇÃO DO GRAU DE MESTRE EM BIOLOGIA MARINHA ESPECIALIZAÇÃO EM ECOLOGIA E CONSERVAÇÃO MARINHA CARLA ISABEL DE ALMEIDA SANTINHO FARO 2009 Dissertação realizada no Instituto Nacional dos Recursos Biológicos – IPIMAR (Lisboa) entre Abril de 2007 e Fevereiro de 2009, Orientada por: Doutora Antonina dos Santos Investigadora do INRB-IPIMAR e Doutora Margarida Castro Professora associada da Faculdade de Ciências do Mar e do Ambiente da Universidade do Algarve. Agradecimentos Gostaria de agradecer a todas as pessoas que tornaram possível a realização deste trabalho. Em primeiro lugar o meu agradecimento muito especial à minha orientadora Doutora Antonina dos Santos que tão bem me aconselhou durante a realização deste trabalho. Muito obrigado por ter acreditado sempre, pelo apoio e incentivo, pela paciência, por me ensinado tanto e por estar sempre disponível para me ajudar. O meu enorme obrigado à Professora Doutora Margarida Castro por ter aceite ser minha orientadora e por me ter amparado sempre perante as dificuldades que surgiram desde o início. Muito obrigado pela confiança, pela paciência, pela sua disponibilidade e pelos conhecimentos que me transmitiu. Agradeço às minhas colegas de gabinete e laboratório, Cátia e Joana, por me terem acolhido tão bem e me terem ajudado em tudo e mais alguma coisa sempre que precisei. -
SYSTEMATICS of the CEPHALOPOD FAMILY GONATIDAE from the SOUTHEASTERN BERING SEA RECOMMENDED: APPROVED: F — > Program Head V
Systematics of the Cephalopod family Gonatidae from the southeastern Bering Sea Item Type Thesis Authors Bublitz, Christopher G. Download date 06/10/2021 03:42:26 Link to Item http://hdl.handle.net/11122/5209 SYSTEMATICS OF THE CEPHALOPOD FAMILY GONATIDAE FROM THE SOUTHEASTERN BERING SEA RECOMMENDED: f — > Programin i Head. APPROVED: Vice Chancellor ror Research and Advanced Study Date (J SYSTEMATICS OF THE CEPHALOPOD FAMILY GONATIDAE FROM THE SOUTHEASTERN BERING SEA A THESIS Presented to the Faculty of the University of Alaska in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE By Qu Christopher G. Bublitz 4- o Fairbanks, Alaska '3 < o May 1981 H ABSTRACT The systematic relationships within the cephalopod family Gonatidae were examined utilizing specimens collected from the southeastern Bering Sea. Ten species; Gonatus onyx, Gonatus madokai, Gonatus tinvo3 Gonatus bewyi, Gonatus pyvos3 Gonatus sp., Gonatus type A, BevvyteuthLs magistev3 Berryteuthis anonychus3 and Gonatopsis bovealis; were identified. Included in these are the identification of a probable new species, Gonatus sp., the verification of a questionable species, Gonatus tinro, and the classification of previously described but unclassified developmental stages. Morphometric characters were used for a retrogression analysis of each species' development. The developmental stages for those species found in the study area are described and illustrated in detail. The taxonomic and morphometric characters of the species are compared. Two closely allied species, Gonatus bevvyi and Gonatus sp. are compared and contrasted. A brief an§J.ysis of the growth and development of the genus Gonatus is also given. ACKNOWLEDGEMENT S I gratefully acknowledge the assistance and encouragement given me by a large number of people, both in the United States and Japan.