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Foraging ecology and fisheries interactions of common bottlenose dolphins (Tursiops truncatus) inferred from strandings in western iberian atlantic waters

2026-05-10Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg12:Produção e Consumo Sustentáveis
datacite.subject.sdg15:Proteger a Vida Terrestre
dc.contributor.authorMarçalo, Ana
dc.contributor.authorNicolau, Lídia
dc.contributor.authorTorres‐Pereira, Andreia
dc.contributor.authorEira, Catarina
dc.contributor.authorAraújo, Helder
dc.contributor.authorOliveira, Isabel
dc.contributor.authorSantos, Jorge
dc.contributor.authorCasero, Maria
dc.contributor.authorFerreira, Marisa
dc.contributor.authorSequeira, Marina
dc.contributor.authorSá, Sara
dc.contributor.authorMonteiro, Silvia S.
dc.contributor.authorVingada, José
dc.contributor.authorGiménez, Joan
dc.date.accessioned2026-06-24T09:07:12Z
dc.date.available2026-06-24T09:07:12Z
dc.date.issued2026-05-10
dc.description.abstractThe common bottlenose dolphin (Tursiops truncatus) is a resident species along the Portuguese mainland coast, yet knowledge of its stranding patterns and feeding ecology is scarce. This study presents a comprehensive assessment of strandings (n=264, from 1980 to 2019) and feeding ecology based on stomach content analysis (n=43 from 1997 to 2019) along the Portuguese mainland coast. Strandings were more frequent in the first half of the year and have increased in recent decades, particularly along the northwestern and southern coasts, likely reflecting improved monitoring efforts. Dietary analysis revealed a predominantly piscivorous diet (>85% by number and weight), with prey including pelagic, meso-pelagic, and demersal fish species. Hake (Merluccius merluccius), conger eel (Conger conger), and blue whiting (Micromesistius poutassou) emerged as the most important prey items. Despite a preference for demersal and mesopelagic fish, dolphins exhibited dietary plasticity, foraging across diverse habitats, likely adapting to local prey availability. The substantial dietary overlap with commercially targeted species, particularly by small-scale and coastal fisheries, suggests potential interactions and competition for shared resources. These findings provide valuable insights into the trophic ecological role of bottlenose dolphins in the region and highlight the need to consider this species in ecosystem-based fisheries management and conservation planning.eng
dc.description.sponsorshipUID/50017/2025; UID/04326/2025; UID/PRR/04326/2025
dc.identifier.doi10.1111/mms.70201
dc.identifier.eissn1748-7692
dc.identifier.issn0824-0469
dc.identifier.urihttp://hdl.handle.net/10400.1/29133
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationINTERACÇÕES DA PESCA DE CERCO COM POPULAÇÕES DE PEQUENOS CETÁCEOS NA COSTA PORTUGUESA
dc.relationPROGRAMA DOUTORAL EM BIOLOGIA E ECOLOGIA DAS ALTERAÇÕES GLOBAIS DA UNIV. DE AVEIRO
dc.relationLong-term conservation of the meridional harbour porpoise ecotype Phocoena phocoena
dc.relationINFLUÊNCIA DE FACTORES ANTROPOGÉNICOS NA COMUNIDADE DE PEQUENOS CETÁCEOS AO LONGO DA ZONA COSTEIRA DO CENTRO DE PORTUGAL
dc.relationCentre for Environmental and Marine Studies
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofMarine Mammal Science
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectDiet
dc.subjectFisheries interactions
dc.subjectPortugal
dc.subjectStomach content analysis
dc.subjectStrandings
dc.subjectTursiops truncatus
dc.titleForaging ecology and fisheries interactions of common bottlenose dolphins (Tursiops truncatus) inferred from strandings in western iberian atlantic waterseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberSFRH/BPD/64889/2009
oaire.awardNumberSFRH/BD/51416/2011
oaire.awardNumberSFRH/BD/122890/2016
oaire.awardNumberSFRH/BD/30240/2006
oaire.awardNumberLA/P/0094/2020
oaire.awardNumberLA/P/0101/2020
oaire.awardTitleINTERACÇÕES DA PESCA DE CERCO COM POPULAÇÕES DE PEQUENOS CETÁCEOS NA COSTA PORTUGUESA
oaire.awardTitlePROGRAMA DOUTORAL EM BIOLOGIA E ECOLOGIA DAS ALTERAÇÕES GLOBAIS DA UNIV. DE AVEIRO
oaire.awardTitleLong-term conservation of the meridional harbour porpoise ecotype Phocoena phocoena
oaire.awardTitleINFLUÊNCIA DE FACTORES ANTROPOGÉNICOS NA COMUNIDADE DE PEQUENOS CETÁCEOS AO LONGO DA ZONA COSTEIRA DO CENTRO DE PORTUGAL
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/SFRH%2FBPD%2F64889%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F51416%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_CENTRO/SFRH%2FBD%2F122890%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/SFRH%2FBD%2F30240%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0094%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.issue3
oaire.citation.startPagee70201
oaire.citation.titleMarine Mammal Science
oaire.citation.volume42
oaire.fundingStreamFARH
oaire.fundingStreamOE
oaire.fundingStreamPOR_CENTRO
oaire.fundingStreamFARH
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMarçalo
person.givenNameAna
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