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Invasive fish keeps native feeding strategy despite high niche overlap with a congener species

2021Journal article Restricted access
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dc.contributor.authorCerveira, Inês
dc.contributor.authorDias, Ester
dc.contributor.authorBaptista, Vânia
dc.contributor.authorTeodosio, Maria
dc.contributor.authorMorais, Pedro
dc.date.accessioned2021-10-29T17:34:45Z
dc.date.available2021-10-29T17:34:45Z
dc.date.issued2021
dc.description.abstractWeakfish Cynoscion regalis (Bloch and Schneider, 1801) is one of the most recent invasive fish in the Iberian Peninsula (Europe). Weakfish has established in the Sado estuary (Portugal) since the early 2010s, and fishers and anglers have expressed concern about its impacts on native prize fish. However, almost a decade later, there is no information on the ecology of weakfish in the non-native area. So, we aimed to assess weakfish feeding strategy and feeding plasticity through stomach content analysis to evaluate if these factors may contribute to its invasiveness, as well as to determine the ecological overlap between weakfish and three native prize fish - European bass, white seabream, and particularly meagre (since they are taxonomically closer), through carbon and nitrogen stable isotopes. Our results demonstrate that Sado's weakfish has a generalist feeding strategy and preys the same functional groups it targets in the native area, therefore feeding strategy may weigh on invasiveness but not feeding plasticity. Weakfish, meagre, and European bass were in the same trophic level and weakfish exhibited higher trophic overlap with meagre, suggesting that weakfish could directly impact meagre if food and habitat become limiting. This study is the first assessment about weakfish ecology in the non-native area and our findings are an excellent starting point to understand this invasion. It can also be useful for management programmes that promote weakfish consumption to minimize its impacts, alleviate fishing pressure on native species, and raise public awareness.pt_PT
dc.description.sponsorshipPOCTEP/Interreg 0755_AT-LAZUL_6_E
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.rsma.2021.101969pt_PT
dc.identifier.issn2352-4855
dc.identifier.urihttp://hdl.handle.net/10400.1/17277
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.subjectWeakfishpt_PT
dc.subjectCynoscion regalispt_PT
dc.subjectEstuarypt_PT
dc.subjectInvasivenesspt_PT
dc.subjectBiological invasionspt_PT
dc.titleInvasive fish keeps native feeding strategy despite high niche overlap with a congener speciespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04423%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04423%2F2020/PT
oaire.citation.startPage101969pt_PT
oaire.citation.titleRegional Studies in Marine Sciencept_PT
oaire.citation.volume47pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameFerreira de Morais Cerveira
person.familyNameBaptista
person.familyNameTeodosio
person.familyNameMorais
person.givenNameInês Maria
person.givenNameVânia
person.givenNameMaria
person.givenNamePedro
person.identifier479502
person.identifier424141
person.identifier.ciencia-id7114-EEE9-D4B8
person.identifier.ciencia-id0C1F-4F1B-256B
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.ciencia-id1A19-7E90-8BDD
person.identifier.orcid0000-0002-6688-4238
person.identifier.orcid0000-0002-1428-3334
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-0861-5566
person.identifier.ridB-5077-2013
person.identifier.ridF-2815-2011
person.identifier.scopus-author-id55820032600
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id7005946306
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.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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