Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea

Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea

16 pages, 7 figures, 4 tables, supplementary material http://dx.doi.org/10.3354/meps11494

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Bibliographic Details
Main Authors: Barría, Claudio, Coll, Marta, Navarro, Joan
Other Authors: Ministerio de Economía y Competitividad (España)
Format: artículo biblioteca
Published: Inter Research
Subjects:Mediterranean Sea, Rays, Sharks, Skates, Species at risk, Stable isotopes, Trophic ecology, Trophic level,
Online Access:http://hdl.handle.net/10261/131498
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100002848
http://dx.doi.org/10.13039/501100000780
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spelling dig-icm-es-10261-1314982020-11-17T12:13:47Z Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea Barría, Claudio Coll, Marta Navarro, Joan Ministerio de Economía y Competitividad (España) Comisión Nacional de Investigación Científica y Tecnológica (Chile) European Commission Mediterranean Sea Rays Sharks Skates Species at risk Stable isotopes Trophic ecology Trophic level 16 pages, 7 figures, 4 tables, supplementary material http://dx.doi.org/10.3354/meps11494 Deficiencies in basic ecological information on uncommon and endangered elasmobranch fishes impair the assessment of their ecological role in marine ecosystems. In this study, we examined the feeding ecology (diet composition and trophic level) and trophic relationships of 22 elasmo branchs (2 Carcharhiniformes, 1 Hexanchiformes, 1 Lamniformes, 3 Myliobatiformes, 6 Rajiformes, 6 Squaliformes and 3 Torpediniformes) present in the western Mediterranean Sea. To obtain a comprehensive view of the feeding ecology of these species, we combined different approaches: stable isotope analyses (δC and δN values), stomach content analyses and published sources. Our results revealed differences in feeding strategies among elasmobranch groups: skates (Rajiformes) mainly consume crustaceans; sharks (Carcharhiniformes, Hexanchiformes, Squaliformes and Lamniformes) prefer mixed diets composed of cephalopods, crustaceans and fishes; electric rays (Torpediniformes) feed mostly on fishes; and the diet of stingrays (Myliobatiformes) varies between species. Sharks and electric rays show higher trophic positions than skates, and the former occupy similar positions to other apex predators. Skates are more similar to other mesopredator fishes. These new findings offer essential information on the ecological role of several elasmobranchs in the western Mediterranean Sea and provide useful data for managers for future conservation strategies C.B. was supported by a predoctoral fellowship CONICYT-Becas Chile. M.C. was partially supported by the Marie Curie Career Integration Grant Fellowships of the BIOWEB project and by a postdoctoral contract of the Ramon y Cajal Program (Spanish Ministry of Economy and Competitiveness). J.N. was supported by the projects Estación Biológica de Doñana-Severo Ochoa (SEV-2012-0262) and ESFRI-Life-Watch. This study forms a contribution to the project ECOTRANS (CTM2011-26333, Spanish Ministry of Economy and Competiveness, Spain) and to the PhD thesis of C.B. Peer Reviewed 2015-11-12 2016-04-27T12:19:13Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.3354/meps11494 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 539: 225-240 (2015) http://hdl.handle.net/10261/131498 10.3354/meps11494 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100002848 http://dx.doi.org/10.13039/501100000780 Publisher's version http://dx.doi.org/10.3354/meps11494 Sí open Inter Research
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic Mediterranean Sea
Rays
Sharks
Skates
Species at risk
Stable isotopes
Trophic ecology
Trophic level
Mediterranean Sea
Rays
Sharks
Skates
Species at risk
Stable isotopes
Trophic ecology
Trophic level
spellingShingle Mediterranean Sea
Rays
Sharks
Skates
Species at risk
Stable isotopes
Trophic ecology
Trophic level
Mediterranean Sea
Rays
Sharks
Skates
Species at risk
Stable isotopes
Trophic ecology
Trophic level
Barría, Claudio
Coll, Marta
Navarro, Joan
Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea
description 16 pages, 7 figures, 4 tables, supplementary material http://dx.doi.org/10.3354/meps11494
author2 Ministerio de Economía y Competitividad (España)
author_facet Ministerio de Economía y Competitividad (España)
Barría, Claudio
Coll, Marta
Navarro, Joan
format artículo
topic_facet Mediterranean Sea
Rays
Sharks
Skates
Species at risk
Stable isotopes
Trophic ecology
Trophic level
author Barría, Claudio
Coll, Marta
Navarro, Joan
author_sort Barría, Claudio
title Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea
title_short Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea
title_full Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea
title_fullStr Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea
title_full_unstemmed Unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western Mediterranean Sea
title_sort unravelling the ecological role and trophic relationships of uncommon and threatened elasmobranchs in the western mediterranean sea
publisher Inter Research
url http://hdl.handle.net/10261/131498
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100002848
http://dx.doi.org/10.13039/501100000780
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