The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation

Chondrichthyans are a vulnerable group that has been overexploited for almost half a century in the Mediterranean. Since in this area most chondrichthyans are rarely incorporated into international statistics, the impact of fshing on their populations is difcult to assess. Here, we evaluate temporal...

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Autores: Ramírez-Amaro, Sergio, Ordines, Francesc, Esteban-Acón, Antonio, García-de-Arboleya-Cañas, Cristina, Guijarro, Beatriz, Salmerón, Francisca, Terrasa, P., Massutí, Enric
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/324183
Acceso en línea:http://hdl.handle.net/10261/324183
Access Level:acceso abierto
Palabra clave:Pesquerías
Centro Oceanográfico de Baleares
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spelling The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturationRamírez-Amaro, SergioOrdines, FrancescEsteban-Acón, AntonioGarcía-de-Arboleya-Cañas, CristinaGuijarro, BeatrizSalmerón, FranciscaTerrasa, P.Massutí, EnricPesqueríasCentro Oceanográfico de BalearesChondrichthyans are a vulnerable group that has been overexploited for almost half a century in the Mediterranean. Since in this area most chondrichthyans are rarely incorporated into international statistics, the impact of fshing on their populations is difcult to assess. Here, we evaluate temporal trends in order to understand the recent history of chondrichthyans in the western Mediterranean. Fishery-independent data were obtained from scientifc surveys carried out from 1994 to 2015 in three geographical sub-areas. Our results refect fairly stable populations in terms of diversity, with some increase in density and standardized biomass of some species dwelling on the continental shelf, and even for some species dwelling on the slope. In contrast, decreasing trends were observed in some deep-water species. This can be explained by the reduction of the trawling efort on the continental shelf over the last few decades, and the shift of the feet towards deep waters, along with the greater resilience displayed by some species. Furthermore, a decreasing trend in maturity of Scyliorhinus canicula was detected, suggesting an evolutionary response to overfshing. These results improve scientifc knowledge for developing true adaptive management in the Mediterranean that will implement measures to strengthen or initiate the recovery of chondrichthyans.Springer Nature202320232020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/324183reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Balearesinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3241832026-05-22T06:33:51Z
dc.title.none.fl_str_mv The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
title The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
spellingShingle The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
Ramírez-Amaro, Sergio
Pesquerías
Centro Oceanográfico de Baleares
title_short The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
title_full The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
title_fullStr The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
title_full_unstemmed The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
title_sort The diversity of recent trends for chondrichthyans in the Mediterranean reflects fishing exploitation and a potential evolutionary pressure towards early maturation
dc.creator.none.fl_str_mv Ramírez-Amaro, Sergio
Ordines, Francesc
Esteban-Acón, Antonio
García-de-Arboleya-Cañas, Cristina
Guijarro, Beatriz
Salmerón, Francisca
Terrasa, P.
Massutí, Enric
author Ramírez-Amaro, Sergio
author_facet Ramírez-Amaro, Sergio
Ordines, Francesc
Esteban-Acón, Antonio
García-de-Arboleya-Cañas, Cristina
Guijarro, Beatriz
Salmerón, Francisca
Terrasa, P.
Massutí, Enric
author_role author
author2 Ordines, Francesc
Esteban-Acón, Antonio
García-de-Arboleya-Cañas, Cristina
Guijarro, Beatriz
Salmerón, Francisca
Terrasa, P.
Massutí, Enric
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Pesquerías
Centro Oceanográfico de Baleares
topic Pesquerías
Centro Oceanográfico de Baleares
description Chondrichthyans are a vulnerable group that has been overexploited for almost half a century in the Mediterranean. Since in this area most chondrichthyans are rarely incorporated into international statistics, the impact of fshing on their populations is difcult to assess. Here, we evaluate temporal trends in order to understand the recent history of chondrichthyans in the western Mediterranean. Fishery-independent data were obtained from scientifc surveys carried out from 1994 to 2015 in three geographical sub-areas. Our results refect fairly stable populations in terms of diversity, with some increase in density and standardized biomass of some species dwelling on the continental shelf, and even for some species dwelling on the slope. In contrast, decreasing trends were observed in some deep-water species. This can be explained by the reduction of the trawling efort on the continental shelf over the last few decades, and the shift of the feet towards deep waters, along with the greater resilience displayed by some species. Furthermore, a decreasing trend in maturity of Scyliorhinus canicula was detected, suggesting an evolutionary response to overfshing. These results improve scientifc knowledge for developing true adaptive management in the Mediterranean that will implement measures to strengthen or initiate the recovery of chondrichthyans.
publishDate 2020
dc.date.none.fl_str_mv 2020
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/324183
url http://hdl.handle.net/10261/324183
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Baleares
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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