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Under pressure: deep-sea elasmobranchs experience high mortality and stress in a crustacean trawling fishery

datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg12:Produção e Consumo Sustentáveis
datacite.subject.sdg13:Ação Climática
dc.contributor.authorGraça Aranha Carvalho Ramos, Sofia
dc.contributor.authorTeodosio, Maria
dc.contributor.authorMarsili, Tiago
dc.contributor.authorPires da Rocha, Pedro
dc.contributor.authorModesto, Teresa
dc.contributor.authorGuerreiro, Pedro Miguel
dc.contributor.authorTambutte, Aurélien
dc.contributor.authorCarvalho Alves, Alexandra
dc.contributor.authorRelvas, Paulo
dc.contributor.authorDias, Ester
dc.date.accessioned2026-05-18T17:02:08Z
dc.date.available2026-05-18T17:02:08Z
dc.date.issued2025-04-11
dc.description.abstractCrustacean bottom trawling in southern Portugal is an economic and culturally important fishing activity but may result in considerable bycatch of deep-sea elasmobranchs (DSE). Due to DSE life-history strategies, at-vessel mortality (AVM) rates in crustacean bottom trawl fisheries are expectedly high but require further investigations. This study assessed the at-vessel condition of 18 species of DSE, and AVM rates and stress of four deep-sea shark species (Etmopterus pusillus, E. spinax, Galeus melastomus, and Scymnodon ringens), to understand the impact of bottom trawling on these animals. Opportunistic sampling on a crustacean trawler in the southern Portuguese coast, revealed that 95% of specimens were either dead (n = 1,258) or in poor condition (n = 224) upon collection, underscoring their minimal chance of post-release survival. General linear model analyses showed that AVM was species-specific and highest in smaller sharks, as well as in those from hauls that exhibited larger temperature dierences between bottom and surface waters, and those caught in hauls with heavier codend weight using a 55 mm codend mesh (targeting shrimp and prawns) instead of those caught in hauls using a 70 mm codend mesh (targeting Norway lobster). Stress, evaluated through metabolites and electrolytes levels in sharks’ plasma, indicated significant dierences in potassium, urea, and magnesium levels between live and deceased specimens of E. pusillus and G. melastomus, suggesting these as reliable mortality markers. Elevated lactate levels in G. melastomus further pointed to high post-release mortality risk. These findings highlight an urgent need to find solutions to mitigate the impacts of bottom trawling on those DSE, which are thoroughly discussed. A coordinated, multi-stakeholder approach involving researchers, the fishing industry, and regulatory bodies is crucial for developing and implementing eective, and more sustainable fisheries management and protection of DSE populations.eng
dc.description.sponsorshipSOSF 501
dc.identifier.doi10.3389/frish.2025.1473376
dc.identifier.issn2813-9097
dc.identifier.urihttp://hdl.handle.net/10400.1/28996
dc.language.isoeng
dc.peerreviewedyes
dc.publisherFrontiers Media SA
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relationNuBIAN: Nubian technology, Behavioural Innovation and Adaptation. New perspectives on Middle Stone Age technological variability and population dynamics
dc.relation.ispartofFrontiers in Fish Science
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAt-vessel mortality
dc.subjectCondition
dc.subjectSurvival
dc.subjectPlasma
dc.subjectSecondary responses
dc.subjectIberian Peninsula
dc.subjectPortugal
dc.titleUnder pressure: deep-sea elasmobranchs experience high mortality and stress in a crustacean trawling fisheryeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberUIDP/04423/2020
oaire.awardNumberUIDB/04326/2020
oaire.awardNumberUIDP/04326/2020
oaire.awardNumberLA/P/0101/2020
oaire.awardNumber2021.00041.CEECIND/CP1672/CT0007
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardTitleNuBIAN: Nubian technology, Behavioural Innovation and Adaptation. New perspectives on Middle Stone Age technological variability and population dynamics
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04423%2F2020/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.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND4ed/2021.00041.CEECIND%2FCP1672%2FCT0007/PT
oaire.citation.startPage1473376
oaire.citation.titleFrontiers in Fish Science
oaire.citation.volume3
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND4ed
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameGraça Aranha Carvalho Ramos
person.familyNameTeodosio
person.familyNamePires da Rocha
person.familyNameModesto
person.familyNameGuerreiro
person.familyNameCarvalho Alves
person.familyNameRelvas
person.givenNameSofia
person.givenNameMaria
person.givenNamePedro
person.givenNameTeresa
person.givenNamePedro Miguel
person.givenNameAlexandra
person.givenNamePaulo
person.identifierA-2539-2009
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person.identifier.ciencia-id8D19-0844-ACCF
person.identifier.ciencia-id2412-1F65-A044
person.identifier.orcid0000-0002-3664-6896
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-6558-2860
person.identifier.orcid0000-0002-2691-4906
person.identifier.orcid0000-0001-5371-7919
person.identifier.orcid0000-0003-1153-596X
person.identifier.orcid0000-0002-6404-5895
person.identifier.ridB-5077-2013
person.identifier.ridB-1257-2008
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id6603372075
person.identifier.scopus-author-id6505976206
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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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