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Habitat use and diel vertical migration of bigeye thresher shark: overlap with pelagic longline fishing gear

2015-12Journal article Open access
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dc.contributor.authorCoelho, Rui
dc.contributor.authorFernandez-Carvalho, Joana
dc.contributor.authorSantos, Miguel N.
dc.date.accessioned2016-02-05T09:51:51Z
dc.date.available2016-12-30T01:30:10Z
dc.date.issued2015-12
dc.description.abstractPelagic longliners targeting swordfish and tunas in oceanic waters regularly capture sharks as bycatch, including currently protected species as the bigeye thresher, Alopias superciliosus. Fifteen bigeye threshers were tagged with pop-up satellite archival tags (PSATs) in 2012-2014 in the tropical northeast Atlantic, with successful transmissions received from 12 tags for a total of 907 tracking days. Marked diel vertical movements were recorded on all specimens, with most of the daytime spent in deeper colder water (mean depth = 353 m, SD = 73; mean temperature = 10.7 °C, SD = 1.8) and nighttime spent in warmer water closer to the surface (mean depth = 72 m, SD = 54; mean temperature = 21.9 °C, SD = 3.7). The operating depth of the pelagic longline gear was measured with Minilog Temperature and Depth Recorders (TDRs), and the overlap with habitat utilization was calculated. Overlap is taking place mainly during the night and is higher for juveniles. The results presented herein can be used as inputs for Ecological Risk Assessments for bigeye threshers captured in oceanic tuna fisheries, and serve as a basis for efficient management and conservation of this vulnerable shark species.pt_PT
dc.identifier.citationCoelho, R., Fernandez-Carvalho, J., Santos, M.N. 2015. Habitat use and diel vertical migration of bigeye thresher shark: overlap with pelagic longline fishing gear. Marine Environmental Research, 112: 91-99pt_PT
dc.identifier.doihttp://dx.doi.org/10.1016/j.marenvres.2015.10.009pt_PT
dc.identifier.issn0141-1136
dc.identifier.urihttp://hdl.handle.net/10400.1/7607
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationIntegrating biology, ecology and modeling to promote sustainable pelagic longline fisheries of highly migratory species in the Atlantic and Indian Oceans
dc.relationPOPULATION DYNAMICS AND FISHERIES ASSESSMENT OF THE BIGEYE THRESHER SHARK ALOPIAS SUPERCILIOSUS IN THE ATLANTIC OCEAN: A COMPARISON BETWEEN NORTH AND SOUTH ATLANTIC FISHING STOCKS
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S014111361530060Xpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectAlopias superciliosuspt_PT
dc.subjectBycatchpt_PT
dc.subjectFisheriespt_PT
dc.subjectTemperature and depth recorderspt_PT
dc.subjectPop-up satellite archival tagspt_PT
dc.subjectSharkspt_PT
dc.subjectSusceptibilitypt_PT
dc.subjectVertical habitatpt_PT
dc.titleHabitat use and diel vertical migration of bigeye thresher shark: overlap with pelagic longline fishing gearpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleIntegrating biology, ecology and modeling to promote sustainable pelagic longline fisheries of highly migratory species in the Atlantic and Indian Oceans
oaire.awardTitlePOPULATION DYNAMICS AND FISHERIES ASSESSMENT OF THE BIGEYE THRESHER SHARK ALOPIAS SUPERCILIOSUS IN THE ATLANTIC OCEAN: A COMPARISON BETWEEN NORTH AND SOUTH ATLANTIC FISHING STOCKS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F109915%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F00253%2F2014%2FCP1251%2FCT0001/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F60624%2F2009/PT
oaire.citation.endPage99pt_PT
oaire.citation.issuePart Bpt_PT
oaire.citation.startPage91pt_PT
oaire.citation.titleMarine Environmental Researchpt_PT
oaire.citation.volume112pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStreamInvestigador FCT
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
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isAuthorOfPublication.latestForDiscovery6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isProjectOfPublication646a664d-f899-4d80-a138-3023563d04c6
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