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Leader material and bait effects on target and bycatch species caught in an Atlantic Ocean pelagic longline fishery

dc.contributor.authorCasaca Santos, Catarina
dc.contributor.authorSantos, Miguel N.
dc.contributor.authorRosa, Daniela
dc.contributor.authorCoelho, Rui
dc.date.accessioned2024-09-23T10:12:26Z
dc.date.available2024-09-23T10:12:26Z
dc.date.issued2024-10
dc.description.abstractThe influence of bait type and leader material on target and bycatch species was assessed through fishing experiments in the Portuguese shallow pelagic longline fishery in the Atlantic Ocean. Wire leaders were found to decrease catch rates of commercially valuable species such as bigeye tuna and yellowfin tuna, while increasing catch rates of elasmobranchs, including the blue shark and shortfin mako. The odds ratios of capture swordfish and tunas also decrease when using wire leaders, while elasmobranchs have higher odds ratios of capture and athaulback mortality when using wire leaders. Squid bait led to higher catches of targeted tuna species, however it also resulted in higher catches of marine turtles. For most of the taxa caught at-haulback mortality risk was found to be higher on squid bait, which may be related with increased deep-hooking events. While bait type and leader material did not significantly affect size selectivity for most species, wire leaders were found to retain larger blue sharks and fish bait attracted smaller-sized swordfish. This study showed that banning wire leaders on pelagic longline fisheries is an effective measure for reducing the retention of pelagic shark species, particularly of large size blue sharks.eng
dc.identifier.doi10.1016/j.fishres.2024.107093
dc.identifier.issn0165-7836
dc.identifier.urihttp://hdl.handle.net/10400.1/25920
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationPelagic sharks: a contribution to conservation and sustainable fisheries management in the Atlantic Ocean
dc.relationSustainable fisheries management of swordfish Xiphias gladius in the Atlantic and Indian Oceans: biology, population dynamics, stock structure, habitat use, and evaluation of alternative management options.
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofFisheries Research
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPelagic longline fishery
dc.subjectNylon monofilament vs. wire leaders
dc.subjectSquid vs . mackerel
dc.subjectShark mortality
dc.subjectBycatch mitigation
dc.titleLeader material and bait effects on target and bycatch species caught in an Atlantic Ocean pelagic longline fisheryeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitlePelagic sharks: a contribution to conservation and sustainable fisheries management in the Atlantic Ocean
oaire.awardTitleSustainable fisheries management of swordfish Xiphias gladius in the Atlantic and Indian Oceans: biology, population dynamics, stock structure, habitat use, and evaluation of alternative management options.
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F139187%2F2018/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F136074%2F2018/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.startPage107093
oaire.citation.titleFisheries research
oaire.citation.volume278
oaire.fundingStreamOE
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCasaca Santos
person.familyNameRosa
person.familyNameCoelho
person.givenNameCatarina
person.givenNameDaniela
person.givenNameRui
person.identifier134638
person.identifier.ciencia-id0512-E394-FF42
person.identifier.ciencia-idDC1A-20B7-EAC0
person.identifier.orcid0000-0002-2253-0737
person.identifier.orcid0000-0001-7156-7408
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.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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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