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Distribution patterns and population structure of the blue shark (Prionace glauca) in the Atlantic and Indian Oceans

2018Journal article Restricted access
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dc.contributor.authorCoelho, Rui
dc.contributor.authorMejuto, Jaime
dc.contributor.authorDomingo, Andrés
dc.contributor.authorYokawa, Kotaro
dc.contributor.authorLiu, Kwang-Ming
dc.contributor.authorCortés, Enric
dc.contributor.authorRomanov, Evgeny V.
dc.contributor.authorda Silva, Charlene
dc.contributor.authorHazin, Fábio
dc.contributor.authorArocha, Freddy
dc.contributor.authorMwilima, Aldrin Masawbi
dc.contributor.authorBach, Pascal
dc.contributor.authorOrtiz de Zárate, Victoria
dc.contributor.authorRoche, William
dc.contributor.authorLino, Pedro G.
dc.contributor.authorGarcía-Cortés, Blanca
dc.contributor.authorRamos-Cartelle, Ana M.
dc.contributor.authorForselledo, Rodrigo
dc.contributor.authorMas, Federico
dc.contributor.authorOhshimo, Seiji
dc.contributor.authorCourtney, Dean
dc.contributor.authorSabarros, Philippe S.
dc.contributor.authorPerez, Bernardo
dc.contributor.authorWogerbauer, Ciara
dc.contributor.authorTsai, Wen-Pei
dc.contributor.authorCarvalho, Felipe
dc.contributor.authorSantos, Miguel N.
dc.date.accessioned2020-12-03T10:16:36Z
dc.date.available2020-12-03T10:16:36Z
dc.date.issued2018
dc.description.abstractThe blue shark (Prionace glauca) is the most frequently captured shark in pelagic oceanic fisheries, especially pelagic longlines targeting swordfish and/or tunas. As part of cooperative scientific efforts for fisheries and biological data collection, information from fishery observers, scientific projects and surveys, and from recreational fisheries from several nations in the Atlantic and Indian Oceans was compiled. Data sets included information on location, size and sex, in a total of 478,220 blue shark records collected between 1966 and 2014. Sizes ranged from 36 to 394 cm fork length. Considerable variability was observed in the size distribution by region and season in both oceans. Larger blue sharks tend to occur in equatorial and tropical regions, and smaller specimens in higher latitudes in temperate waters. Differences in sex ratios were also detected spatially and seasonally. Nursery areas in the Atlantic seem to occur in the temperate south‐east off South Africa and Namibia, in the south‐west off southern Brazil and Uruguay, and in the north‐east off the Iberian Peninsula and the Azores. Parturition may occur in the tropical north‐east off West Africa. In the Indian Ocean, nursery areas also seem to occur in temperate waters, especially in the south‐west Indian Ocean off South Africa, and in the south‐east off south‐western Australia. The distributional patterns presented in this study provide a better understanding of how blue sharks segregate by size and sex, spatially and temporally, and improve the scientific advice to help adopt more informed and efficient management and conservation measures for this cosmopolitan species.pt_PT
dc.description.sponsorshipFCT IF/00253/2014pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1111/faf.12238pt_PT
dc.identifier.issn1467-2960
dc.identifier.urihttp://hdl.handle.net/10400.1/14864
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/full/10.1111/faf.12238pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectAtlantic Oceanpt_PT
dc.subjectFishery observer programmespt_PT
dc.subjectIndian Oceanpt_PT
dc.subjectPelagic fisheriespt_PT
dc.subjectSize distributionpt_PT
dc.subjectSpatial distributionpt_PT
dc.titleDistribution patterns and population structure of the blue shark (Prionace glauca) in the Atlantic and Indian Oceanspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage106pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage90pt_PT
oaire.citation.titleFish and Fisheriespt_PT
oaire.citation.volume19pt_PT
person.familyNameCoelho
person.givenNameRui
person.identifier134638
person.identifier.ciencia-idDC1A-20B7-EAC0
person.identifier.orcid0000-0003-3813-5157
person.identifier.ridC-1163-2008
person.identifier.scopus-author-id56257111100
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isAuthorOfPublication.latestForDiscovery6366aa1b-1301-43a3-b2b0-1280311ac95f

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