07 WGEF Report
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Morphological and Mitochondrial DNA Divergence Validates Blackmouth, Galeus Melastomus, and Atlantic Sawtail Catsharks, Galeus Atlanticus,Asseparatespecies
Journal of Fish Biology (2007) 70 (Supplement C), 346–358 doi:10.1111/j.1095-8649.2007.01455.x, available online at http://www.blackwell-synergy.com Morphological and mitochondrial DNA divergence validates blackmouth, Galeus melastomus, and Atlantic sawtail catsharks, Galeus atlanticus,asseparatespecies R. CASTILHO*†, M. FREITAS*, G. SILVA*, J. FERNANDEZ-CARVALHO‡ AND R. COELHO‡ *Biodiversity and Conservation Group, CCMAR, University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal and ‡Coastal Fisheries Research Group, CCMAR, University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal (Received 30 August 2006, Accepted 17 January 2007) A total of 60 morphometric traits and nucleotide sequences of the entire mtDNA NADH dehydrogenase subunit 2 (ND2) gene [1047 base pair (bp)] in 23 individuals of blackmouth, Galeus melastomus, and 13 individuals of sawtail catsharks, Galeus atlanticus, caught in Southern Portugal, were examined to test the validity of these two taxa. These sharks closely resemble each other, have overlapping geographical ranges and are difficult to identify by morphological characters. Non-metric multidimensional scaling of morphometric variables indicates a clear separation between the two species, with 10 characters each contributing 2Á12–2Á45% of the total variability between species. Maximum likelihood, parsimony and neighbour-joining trees revealed two major mtDNA haplotype clades, corresponding to the two species, with an average corrected sequence divergence between them of 3Á39 Æ 0Á56%. Within species divergences between haplotypes averaged 0Á27 Æ 0Á18% in G. melastomus and 0Á12 Æ 0Á08% in G. atlanticus. A total of 35 diagnostic nucleotide site differences and four restriction fragment length polymorphism recognition sites in the ND2 gene can be used to distinguish the two species. -
© Iccat, 2007
A5 By-catch Species APPENDIX 5: BY-CATCH SPECIES A.5 By-catch species By-catch is the unintentional/incidental capture of non-target species during fishing operations. Different types of fisheries have different types and levels of by-catch, depending on the gear used, the time, area and depth fished, etc. Article IV of the Convention states: "the Commission shall be responsible for the study of the population of tuna and tuna-like fishes (the Scombriformes with the exception of Trichiuridae and Gempylidae and the genus Scomber) and such other species of fishes exploited in tuna fishing in the Convention area as are not under investigation by another international fishery organization". The following is a list of by-catch species recorded as being ever caught by any major tuna fishery in the Atlantic/Mediterranean. Note that the lists are qualitative and are not indicative of quantity or mortality. Thus, the presence of a species in the lists does not imply that it is caught in significant quantities, or that individuals that are caught necessarily die. Skates and rays Scientific names Common name Code LL GILL PS BB HARP TRAP OTHER Dasyatis centroura Roughtail stingray RDC X Dasyatis violacea Pelagic stingray PLS X X X X Manta birostris Manta ray RMB X X X Mobula hypostoma RMH X Mobula lucasana X Mobula mobular Devil ray RMM X X X X X Myliobatis aquila Common eagle ray MYL X X Pteuromylaeus bovinus Bull ray MPO X X Raja fullonica Shagreen ray RJF X Raja straeleni Spotted skate RFL X Rhinoptera spp Cownose ray X Torpedo nobiliana Torpedo -
“Trophic Strategies and Basic Morphology of the Rare Demersal Kitefin Shark Dalatias Licha in the North- Western Mediterranean Sea”
“Trophic strategies and basic morphology of the rare demersal kitefin shark Dalatias licha in the north- western Mediterranean Sea” Mª Lourdes López Calero Master in Marine Sciences: Oceanography and Marine Environment Management Directores: Tutor: Dra. Marta Coll Montón y Dr. Joan Dr. Joan Baptista Company Claret Navarro Bernabé Departamento de Recursos Marinos Departamento de Recursos Marinos Renovables Renovables Instituto de Ciencias del Mar - CSIC Instituto de Ciencias del Mar - CSIC September 2013 Abstract At the present time unravelling the complexity of marine food webs has become a valuable tool to progress on the knowledge on how marine ecosystems are structured and how the function. Recently, to the study of species trophic ecology, has been applied a combination of two complementary methodologies, stomach content and stable isotope analyses With the present study I aimed at examining the trophic ecology and other biological traits of the kitefin shark Dalatias licha in the north-western Mediterranean Sea. A demersal shark which has been assessed as near threaten globally and data deficient in the Mediterranean Sea within the IUCN framework. In this study I provide morphological measures and also new information on its diet composition, trophic ecology and trophic level of this organism by means of stomach content analysis, providing dietary quantitative indexes (%F, %N and %IRI), and stable isotopes analysis by measuring δ15N and δ13C isotopic values and applying Bayesian isotopic mixing models. Also potential differences in dietary habits and basic morphology between sexes and different study areas were examined. Results show alimentary preference for small demersal sharks, followed by bony fishes, which could be a symptom of a dietary shift from fishes that were the main prey 30 years ago. -
Table Tableau Tabla 2
Table Tableau Tabla 2 Species codes of tunas, Codes des espèces de Códigos de especies de túnidos, tuna‐like species and thonidés, d’espèces de especies afines a los túnidos sharks apparentées et des requins y de tiburones Code / Scientific names / Common names Noms communs Nombres comunes Code / Noms sientifiques / (English) (Français) (Español) Código Nombres científicos Tunas ALB Thunnus alalunga Albacore Germon Atún blanco Thonidés BET Thunnus obesus Bigeye tuna Thon obèse(=Patudo) Patudo Túnidos BFT Thunnus thynnus Atlantic bluefin tuna Thon rouge de l’atlantique Atún rojo BUM Makaira nigricans Atlantic blue marlin Makaire bleu de l'Atlantique Aguja azul del Atlántico SAI Istiophorus albicans Atlantic sailfish Voilier de l'Atlantique Pez vela del Atlántico SKJ Katsuwonus pelamis Skipjack tuna Listao Listado SWO Xiphias gladius Swordfish Espadon Pez espada WHM Tetrapturus albidus Atlantic white marlin Makaire blanc de l'Atlantique Aguja blanca del Atlántico YFT Thunnus albacares Yellowfin tuna Albacore Rabil BLF Thunnus atlanticus Blackfin tuna Thon à nageoires noires Atún des aletas negras BLT Auxis rochei Bullet tuna Bonitou Melva(=Melvera) BON Sarda sarda Atlantic bonito Bonite à dos rayé Bonito del Atlántico BOP Orcynopsis unicolor Plain bonito Palomette Tasarte BRS Scomberomorus brasiliensis Serra Spanish mackerel Thazard serra Serra CER Scomberomorus regalis Cero Thazard franc Carite chinigua FRI Auxis thazard Frigate tuna Auxide Melva KGM Scomberomorus cavalla King mackerel Thazard barré Carite lucio KGX Scomberomorus spp -
Identification Guide to the Deep-Sea Cartilaginous Fishes Of
Identification guide to the deep–sea cartilaginous fishes of the Southeastern Atlantic Ocean FAO. 2015. Identification guide to the deep–sea cartilaginous fishes of the Southeastern Atlantic Ocean. FishFinder Programme, by Ebert, D.A. and Mostarda, E., Rome, Italy. Supervision: Merete Tandstad, Jessica Sanders (FAO, Rome) Technical editor: Edoardo Mostarda (FAO, Rome) Colour illustrations, cover and graphic design: Emanuela D’Antoni (FAO, Rome) This guide was prepared under the “FAO Deep–sea Fisheries Programme” thanks to a generous funding from the Government of Norway (Support to the implementation of the International Guidelines on the Management of Deep-Sea Fisheries in the High Seas project) for the purpose of assisting states, institutions, the fishing industry and RFMO/As in the implementation of FAO International Guidelines for the Management of Deep-sea Fisheries in the High Seas. It was developed in close collaboration with the FishFinder Programme of the Marine and Inland Fisheries Branch, Fisheries Department, Food and Agriculture Organization of the United Nations (FAO). The present guide covers the deep–sea Southeastern Atlantic Ocean and that portion of Southwestern Indian Ocean from 18°42’E to 30°00’E (FAO Fishing Area 47). It includes a selection of cartilaginous fish species of major, moderate and minor importance to fisheries as well as those of doubtful or potential use to fisheries. It also covers those little known species that may be of research, educational, and ecological importance. In this region, the deep–sea chondrichthyan fauna is currently represented by 50 shark, 20 batoid and 8 chimaera species. This guide includes full species accounts for 37 shark, 9 batoid and 4 chimaera species selected as being the more difficult to identify and/or commonly caught. -
Wk Shark Advice Adhshark
ICES Special Request Advice Ecoregions in the Northeast Atlantic and adjacent seas Published 25 September 2020 NEAFC and OSPAR joint request on the status and distribution of deep-water elasmobranchs Advice summary In response to a joint request from NEAFC and OSPAR, ICES reviewed existing information on deep-water sharks, skates and rays from surveys and the literature. Distribution maps were generated for 21 species, showing the location of catches from available survey data on deep-water sharks and elasmobranchs in the NEAFC and OSPAR areas of the Northeast Atlantic. Shapefiles of the species distribution areas are available as supporting documentation to this work. This advice sheet presents a summary of ICES advice on the stock status of species for which an assessment is available, as well as current knowledge on the stock status of species for which ICES does not provide advice. An overview of approaches which may be applied to mitigate bycatch and to improve stock status is also presented. ICES recognizes that, despite their limitations, prohibition, gear and depth limitations, and TAC are mechanisms currently available to managers to regulate outtake; therefore, ICES advises that these mechanisms should be maintained. Furthermore, ICES advises that additional measures, such as electromagnetic exclusion devices, acoustic or light-based deterrents, and spatio-temporal management could be explored. Request NEAFC and OSPAR requested ICES to produce: a. Maps and shapefiles of the distribution of the species, identifying, if possible, key areas used during particular periods/stages of the species’ lifecycle in terms of distribution and relative abundance of the species, and expert interpretation of the data products; b. -
Feeding Ecology and Trophic Position of Three Sympatric Demersal Chondrichthyans in the Northwestern Mediterranean
Vol. 524: 255–268, 2015 MARINE ECOLOGY PROGRESS SERIES Published March 30 doi: 10.3354/meps11188 Mar Ecol Prog Ser Feeding ecology and trophic position of three sympatric demersal chondrichthyans in the northwestern Mediterranean Marta Albo-Puigserver1,*, Joan Navarro1,2, Marta Coll1,3, Jacopo Aguzzi1, Luis Cardona4, Raquel Sáez-Liante1 1Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta, 37-49, 08003 Barcelona, Spain 2Department of Conservation Biology, Estación Biológica de Doñana (EBD-CSIC), Avda. Américo Vespucio s/n, Sevilla 41092, Spain 3Laboratoire Écosystèmes Marins Exploités UMR 212, IRD-IFREMER-UM2, Avenue Jean Monnet BP171, 34203 Sète Cedex, France 4Departament de Biologia Animal and Institut de Recerca de la Biodiversitat (IRBio), Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 645, 08028 Barcelona, Spain ABSTRACT: Understanding how marine predators interact is a scientific challenge. In marine eco- systems, segregation in feeding habits has been largely described as a common mechanism to allow the coexistence of several competing marine predators. However, little is known about the feeding ecology of most species of chondrichthyans, which play a pivotal role in the structure of marine food webs worldwide. In this study, we examined the trophic ecology of 3 relatively abun- dant chondrichthyans coexisting in the Mediterranean Sea: the blackmouth catshark Galeus melastomus, the velvet belly lanternshark Etmopterus spinax and the rabbit fish Chimaera monstrosa. To examine their trophic ecology and interspecific differences in food habits, we combined the analysis of stomach content and stable isotopes. Our results highlighted a trophic segregation between C. monstrosa and the other 2 species. G. melastomus showed a diet composed mainly of cephalopods, while E. -
MD Shark Catch Card
Live Releases Dead Releases TODAY’S DATE: DATE: TODAY’S MM Write the # of sharks released alive in the Live Releases Box and the # released dead Maryland Shark in the Dead Release Box. DD Catch Card YYYY Today’s Date: MM DD YYYY Species (see reverse for list): If you cannot ID, you MUST release it Shark TAG #: Shark TAG HMS PERMIT #: Was this fish caught during a tournament? Yes / No Tournament Name: Fork Length Tagging Location Reporting Station: *Measurement Description Shark Tag #: * Measure in a straight line from the tip of the (Obtain at Reporting Station) Sex (circle one): M / F snout to the fork of the tail. *Fork Length (inches): **Weight (lbs) ** Scale weight ONLY. Do not record estimated weight. Complete this section if fishing from a vessel: NOTE: Most sharks landed in Maryland must have Vessel Name: a LANDING TAG affixed before removal from the vessel. Tags are available at all SHARK REPORTING STATIONS. To obtain a LANDING TAG, captains or Registration # (State ID): operators of the permitted vessel, or licensed angler if fishing from shore, must complete and submit a Permit Holders Name: catch card for every shark landed. For a complete Atlantic HMS list of sharks that you must report, please see the Permit #: reverse side of this card. Trip Type: Charter / Private / Headboat This information collected is approved under OMB (Circle One) Control # 0648-0328 and expires on 07/31/2019 Live Releases Dead Releases TODAY’S DATE: DATE: TODAY’S MM Write the # of sharks released alive in the Live Releases Box and the # released dead Maryland Shark in the Dead Release Box. -
Integrating Multiple Chemical Tracers to Elucidate the Diet and Habitat of Cookiecutter Sharks Aaron B
www.nature.com/scientificreports OPEN Integrating multiple chemical tracers to elucidate the diet and habitat of Cookiecutter Sharks Aaron B. Carlisle1*, Elizabeth Andruszkiewicz Allan2,9, Sora L. Kim3, Lauren Meyer4,5, Jesse Port6, Stephen Scherrer7 & John O’Sullivan8 The Cookiecutter shark (Isistius brasiliensis) is an ectoparasitic, mesopelagic shark that is known for removing plugs of tissue from larger prey, including teleosts, chondrichthyans, cephalopods, and marine mammals. Although this species is widely distributed throughout the world’s tropical and subtropical oceanic waters, like many deep-water species, it remains very poorly understood due to its mesopelagic distribution. We used a suite of biochemical tracers, including stable isotope analysis (SIA), fatty acid analysis (FAA), and environmental DNA (eDNA), to investigate the trophic ecology of this species in the Central Pacifc around Hawaii. We found that large epipelagic prey constituted a relatively minor part of the overall diet. Surprisingly, small micronektonic and forage species (meso- and epipelagic) are the most important prey group for Cookiecutter sharks across the studied size range (17–43 cm total length), with larger mesopelagic species or species that exhibit diel vertical migration also being important prey. These results were consistent across all the tracer techniques employed. Our results indicate that Cookiecutter sharks play a unique role in pelagic food webs, feeding on prey ranging from the largest apex predators to small, low trophic level species, in particular those that overlap with the depth distribution of the sharks throughout the diel cycle. We also found evidence of a potential shift in diet and/or habitat with size and season. -
Elasmobranch Biodiversity, Conservation and Management Proceedings of the International Seminar and Workshop, Sabah, Malaysia, July 1997
The IUCN Species Survival Commission Elasmobranch Biodiversity, Conservation and Management Proceedings of the International Seminar and Workshop, Sabah, Malaysia, July 1997 Edited by Sarah L. Fowler, Tim M. Reed and Frances A. Dipper Occasional Paper of the IUCN Species Survival Commission No. 25 IUCN The World Conservation Union Donors to the SSC Conservation Communications Programme and Elasmobranch Biodiversity, Conservation and Management: Proceedings of the International Seminar and Workshop, Sabah, Malaysia, July 1997 The IUCN/Species Survival Commission is committed to communicate important species conservation information to natural resource managers, decision-makers and others whose actions affect the conservation of biodiversity. The SSC's Action Plans, Occasional Papers, newsletter Species and other publications are supported by a wide variety of generous donors including: The Sultanate of Oman established the Peter Scott IUCN/SSC Action Plan Fund in 1990. The Fund supports Action Plan development and implementation. To date, more than 80 grants have been made from the Fund to SSC Specialist Groups. The SSC is grateful to the Sultanate of Oman for its confidence in and support for species conservation worldwide. The Council of Agriculture (COA), Taiwan has awarded major grants to the SSC's Wildlife Trade Programme and Conservation Communications Programme. This support has enabled SSC to continue its valuable technical advisory service to the Parties to CITES as well as to the larger global conservation community. Among other responsibilities, the COA is in charge of matters concerning the designation and management of nature reserves, conservation of wildlife and their habitats, conservation of natural landscapes, coordination of law enforcement efforts as well as promotion of conservation education, research and international cooperation. -
Large-Scale Distribution of Three Deep-Water Squaloid
Fisheries Research Archimer September 2014, Volume 157, Pages 47–61 http://dx.doi.org/10.1016/j.fishres.2014.03.019 http://archimer.ifremer.fr © 2014 Elsevier B.V. All rights reserved. Large-scale distribution of three deep-water squaloid sharks: Integrating is available on the publisher Web site Web publisher the on available is data on sex, maturity and environment Teresa Mouraa, *, Emma Jonesb, Maurice W. Clarkec, Charles F. Cottond, Paul Croziere, Ross K. Daleyf, Guzman Diezg, Helen Dobbyh, Jan E. Dybi, Inge Fosseni, Sarah B. Irvinej, Klara Jakobsdottirk, Luis J. López-Abellánl, Pascal Lorancem, Pedro Pascual-Alayónl, Ricardo B. Severinon, Ivone authenticated version authenticated - Figueiredoa a Divisão de Modelação e Gestão de Recursos da Pesca, Instituto Português do Mar e da Atmosfera, Av. Brasília, 1449-006 Lisbon, Portugal b National Institute of Water and Atmospheric Research, 41 Market Place, Auckland Central 1010, New Zealand c Marine Institute, Rinville, Oranmore, Galway, Ireland d Florida State University Coastal and Marine Lab, 3618 Coastal Hwy 98, St. Teresa, FL, USA e World Wildlife Fund New Zealand, PO Box 6237, Marion Square, Wellington 6141, New Zealand f CSIRO Wealth From Oceans Flagship, GPO Box 1538, Hobart 7001, TAS, Australia g AZTI-Tecnalia, Marine Research Division, Txatxarramendi Ugartea z/g, 48395 Sukarrieta, Bizkaia, Spain h Marine Scotland Science, Marine Laboratory, 375 Victoria Road, Aberdeen AB11 9DB, United Kingdom i Møre Research, Section of Fisheries, PO Box 5075, Larsgård, N-6021 Ålesund, Norway j Irvine Consulting, 617 Dorans Rd, Sandford 7020, TAS, Australia k MRI, Marine Research Institute Iceland, Skúlagata 4, 121 Reykjavík, Iceland l Centro Oceanográfico de Canarias, Instituto Español de Oceanografía, Vía Espaldón Dársena Pesquera Pcl. -
A New Redescription of Galeus Atlanticus (Vaillant, 1888) (Chondrichthyes: Scyliorhinidae) Based on field Marks
A new redescription of Galeus atlanticus (Vaillant, 1888) (Chondrichthyes: Scyliorhinidae) based on field marks by Javier REY (1), Bernard SÉRET (2), Domingo LLORIS (3), Rui COELHO (4) & Luis GIL DE SOLA (1) ABSTRACT. - The Atlantic sawtail catshark, Galeus atlanticus, has long been synonymous with the blackmouth catshark, Galeus melastomus, until the validity of G. atlanticus was resurrected by Muñoz-Chapuli and Ortega (1985). Despite this resurrection, the two species are still often confused because of their close resemblance. Consequently, field characters are proposed to distinguish the two sibling species. In particular, the internal colour of the labial furrows is easily observable on fresh specimens and also on preserved ones in museum collections, since it is blackish in G. atlanticus as opposed to white in G. melastomus. The two Atlanto-Mediterranean species are also compared to the West-African species G. polli. R É S U M É. - Nouvelle description de Galeus atlanticus ( Vaillant, 1888) (Chondrichthyes : Scyliorhinidae) basée sur des caractères d’identification de terrain. Le chien espagnol atlantique, Galeus atlanticus, a longtemps été mis en synonymie avec le chien espagnol G a l e u s m e l a s t o m u s, jusqu’à ce que la validité de G. atlanticus soit reconnue par Muñoz-Chapuli et Ortega (1985). Mais, malgré cette résurrection de G. atlanticus, les deux espèces sont encore souvent confondues du fait de leur grande ressemblance. Des caractères “de terrain” sont proposés pour différencier les deux espèces voisines. Parmi ses caractères, la couleur inter- ne des sillons labiaux est facilement observable sur les spécimens frais, mais également sur les spécimens conservés dans les collections muséologiques ; elle est noirâtre chez G.