Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands

Elasmobranchs are a vulnerable group that has been overexploited for almost half a century in the Mediterranean. However, few elasmobranch species have been assessed because information on their basic biological parameters is lacking for most species. Raja polystigma is a poorly studied endemic skat...

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Authors: Ferragut-Perelló, Francesca, Valls, Maria, Cortes-Pujol, M.A., Ramírez-Amaro, Sergio, Guijarro, Beatriz, Ordines, Francesc
Format: article
Status:Versión aceptada para publicación
Publication Date:2022
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/323074
Online Access:http://hdl.handle.net/10261/323074
Access Level:Open access
Keyword:Pesquerías
Centro Oceanográfico de Baleares
specled ray
biology
reproduction and condition
fish
islands
ecology
parameters
isobaths
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repository_id_str
spelling Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic IslandsFerragut-Perelló, FrancescaValls, MariaCortes-Pujol, M.A.Ramírez-Amaro, SergioGuijarro, BeatrizOrdines, FrancescPesqueríasCentro Oceanográfico de Balearesspecled raybiologyreproduction and conditionfishislandsecologyparametersisobathsElasmobranchs are a vulnerable group that has been overexploited for almost half a century in the Mediterranean. However, few elasmobranch species have been assessed because information on their basic biological parameters is lacking for most species. Raja polystigma is a poorly studied endemic skate in the Mediterranean. The aim of this work is to determine some basic life history parameters of this skate in the Balearic Islands. Data were collected from commercial catches and during MEDITS surveys. Total length varied from 17 to 59 cm for both sexes, with a higher proportion of females than males. Allometric and morphometric relationships differed between sexes, females being heavier for a given size. Females matured at a larger size than males (L50 47.7 cm and 38.4 cm, respectively). Potential fecundity ranged between 11 and 45 yolked oocytes per female, and spawning was observed mainly during winter and spring. Persistent hotspots of adults and juveniles were detected on the shallow shelf off the northwest of Mallorca and east of Menorca, with adults being found mainly in the shallow and juveniles in deeper areas. Time series of abundance and frequency of appearance showed stable trends throughout the study period (2003-2018).Peer reviewedConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/323074reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Baleareshttps://doi.org/10.3989/scimar.05234.033Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3230742026-05-22T06:33:51Z
dc.title.none.fl_str_mv Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
title Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
spellingShingle Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
Ferragut-Perelló, Francesca
Pesquerías
Centro Oceanográfico de Baleares
specled ray
biology
reproduction and condition
fish
islands
ecology
parameters
isobaths
title_short Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
title_full Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
title_fullStr Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
title_full_unstemmed Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
title_sort Biological parameters, ecology and population trends of the Mediterranean endemic skate, Raja polystigma, in the Balearic Islands
dc.creator.none.fl_str_mv Ferragut-Perelló, Francesca
Valls, Maria
Cortes-Pujol, M.A.
Ramírez-Amaro, Sergio
Guijarro, Beatriz
Ordines, Francesc
author Ferragut-Perelló, Francesca
author_facet Ferragut-Perelló, Francesca
Valls, Maria
Cortes-Pujol, M.A.
Ramírez-Amaro, Sergio
Guijarro, Beatriz
Ordines, Francesc
author_role author
author2 Valls, Maria
Cortes-Pujol, M.A.
Ramírez-Amaro, Sergio
Guijarro, Beatriz
Ordines, Francesc
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Pesquerías
Centro Oceanográfico de Baleares
specled ray
biology
reproduction and condition
fish
islands
ecology
parameters
isobaths
topic Pesquerías
Centro Oceanográfico de Baleares
specled ray
biology
reproduction and condition
fish
islands
ecology
parameters
isobaths
description Elasmobranchs are a vulnerable group that has been overexploited for almost half a century in the Mediterranean. However, few elasmobranch species have been assessed because information on their basic biological parameters is lacking for most species. Raja polystigma is a poorly studied endemic skate in the Mediterranean. The aim of this work is to determine some basic life history parameters of this skate in the Balearic Islands. Data were collected from commercial catches and during MEDITS surveys. Total length varied from 17 to 59 cm for both sexes, with a higher proportion of females than males. Allometric and morphometric relationships differed between sexes, females being heavier for a given size. Females matured at a larger size than males (L50 47.7 cm and 38.4 cm, respectively). Potential fecundity ranged between 11 and 45 yolked oocytes per female, and spawning was observed mainly during winter and spring. Persistent hotspots of adults and juveniles were detected on the shallow shelf off the northwest of Mallorca and east of Menorca, with adults being found mainly in the shallow and juveniles in deeper areas. Time series of abundance and frequency of appearance showed stable trends throughout the study period (2003-2018).
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/323074
url http://hdl.handle.net/10261/323074
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Baleares
https://doi.org/10.3989/scimar.05234.033
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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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score 15.81155

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