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Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean

2018-06Journal article Open access
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dc.contributor.authorSantos, Catarina C.
dc.contributor.authorCoelho, Rui
dc.date.accessioned2018-12-07T14:53:25Z
dc.date.available2018-12-07T14:53:25Z
dc.date.issued2018-06
dc.description.abstractThe smooth hammerhead shark, Sphyrna zygaena, is a cosmopolitan semipelagic shark captured as bycatch in pelagic oceanic fisheries, especially pelagic longlines targeting swordfish and/or tunas. From 2012 to 2016, eight smooth hammerheads were tagged with Pop-up Satellite Archival Tags in the inter-tropical region of the Northeast Atlantic Ocean, with successful transmissions received from seven tags (total of 319 tracking days). Results confirmed the smooth hammerhead is a highly mobile species, as the longest migration ever documented for this species (> 6600 km) was recorded. An absence of a diel vertical movement behavior was noted, with the sharks spending most of their time at surface waters (0-50 m) above 23 degrees C. The operating depth of the pelagic long-line gear was measured with Minilog Temperature and Depth Recorders, and the overlap with the species vertical distribution was calculated. The overlap is taking place mainly during the night and is higher for juveniles (similar to 40% of overlap time). The novel information presented can now be used to contribute to the provision of sustainable management tools and serve as input for Ecological Risk Assessments for smooth hammerheads caught in Atlantic pelagic longline fisheries.
dc.description.sponsorshipOceanario de Lisboa through Project "SHARK-TAG: Migrations and habitat use of the smooth hammerhead shark in the Atlantic Ocean"; Investigador-FCT from the Portuguese Foundation for Science and Technology (FCT, Fundacao para a Ciencia e Tecnologia) [Ref: IF/00253/2014]; EU European Social Fund; Programa Operacional Potencial Humano
dc.identifier.doi10.1371/journal.pone.0198664
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.1/11506
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPublic Library Science
dc.relationIntegrating biology, ecology and modeling to promote sustainable pelagic longline fisheries of highly migratory species in the Atlantic and Indian Oceans
dc.subjectPelagic Longline Fisheries
dc.subjectEcological Risk-Assessment
dc.subjectSatellite Archival Tags
dc.subjectEastern North-Atlantic
dc.subjectTuna Thunnus-Thynnus
dc.subjectXiphias-Gladius
dc.subjectSouthern Africa
dc.subjectMovements
dc.subjectSwordfish
dc.subjectTracking
dc.titleMigrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean
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.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F00253%2F2014%2FCP1251%2FCT0001/PT
oaire.citation.issue6
oaire.citation.startPagee0198664
oaire.citation.titlePlos One
oaire.citation.volume13
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.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isAuthorOfPublication.latestForDiscovery6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isProjectOfPublication7e4e9002-ecbd-44d6-bf12-a31371093379
relation.isProjectOfPublication.latestForDiscovery7e4e9002-ecbd-44d6-bf12-a31371093379

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