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Two fish in a pod. Mislabelling on board threatens sustainability in mixed fisheries

2022Journal article Open access
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dc.contributor.authorBlanco-Fernandez, Carmen
dc.contributor.authorErzini, Karim
dc.contributor.authorRodriguez-Diego, Sara
dc.contributor.authorAlba-Gonzalez, Pablo
dc.contributor.authorThiam, Ndiaga
dc.contributor.authorSow, Fambaye Ngom
dc.contributor.authorDiallo, Mamadou
dc.contributor.authorViðarsson, Jónas R.
dc.contributor.authorFernández-Vidal, Duarte
dc.contributor.authorGonçalves, Jorge Manuel Santos
dc.contributor.authorRangel, Mafalda
dc.contributor.authorStobberup, Kim
dc.contributor.authorGarcia-Vazquez, Eva
dc.contributor.authorMachado-Schiaffino, Gonzalo
dc.date.accessioned2022-09-23T13:16:31Z
dc.date.available2022-09-23T13:16:31Z
dc.date.issued2022
dc.description.abstractAccuracy in reporting captures is a key element to achieve fisheries sustainability. However, identification of the catches might be a challenge when two or more species are morphologically similar and caught jointly, like the mixed fisheries of black hakes in East Atlantic African waters. Black hakes (Merluccius senegalensis and M. polli) are tough to differentiate without previous training due to their high morphological resemblance. The two species are managed as a single stock, although the biological differences between them suggest the need of a separate management. In this study, a total of 806 black hakes were visually identified by fishers on deck of fishing vessels operating in Mauritania and Senegal waters, then assigned to a species by sequencing 450bp of the Mitochondrial Control Region. Comparing the results with visual identification we found 31.4% of the total catch were incorrectly labelled on board by the fishermen. The accuracy of the fishers' identification depended on the depth of capture and on fish size, larger individuals caught from deeper waters being more correctly assigned to M. polli. Mislabelling biased to M. polli suggests that M. senegalensis, already catalogued as endangered, is being underreported, which could endanger the conservation of this species and threaten the sustainability of black hake fisheries. Our results highlight the need for separate evaluation of the stocks in mixed fisheries for morphologically similar fish. Thus, monitoring through DNA barcoding in the very first step of the seafood chain surveys would improve accurate species delimitation and reduce its impact on the correct assessment of the stocks.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3389/fmars.2022.841667pt_PT
dc.identifier.issn2296-7745
dc.identifier.urihttp://hdl.handle.net/10400.1/18293
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Mediapt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBlack hakept_PT
dc.subjectControl regionpt_PT
dc.subjectMerlucciuspt_PT
dc.subjectMislabellingpt_PT
dc.subjectMixed fisheriespt_PT
dc.titleTwo fish in a pod. Mislabelling on board threatens sustainability in mixed fisheriespt_PT
dc.typejournal article
dspace.entity.typePublication
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/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.titleFrontiers in Marine Sciencept_PT
oaire.citation.volume9pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameErzini
person.familyNameGonçalves
person.familyNameRangel
person.familyNameStobberup
person.givenNameKarim
person.givenNameJorge Manuel Santos
person.givenNameMafalda
person.givenNameKim
person.identifier356846
person.identifier.ciencia-idD917-7133-341A
person.identifier.ciencia-id1013-ED6A-65EB
person.identifier.ciencia-id2C13-186D-3884
person.identifier.orcid0000-0002-1411-0126
person.identifier.orcid0000-0001-7704-8190
person.identifier.orcid0000-0001-5903-5687
person.identifier.orcid0000-0002-9975-5096
person.identifier.ridM-5216-2013
person.identifier.ridG-5206-2011
person.identifier.ridL-5194-2014
person.identifier.scopus-author-id7004015948
person.identifier.scopus-author-id7103326116
person.identifier.scopus-author-id21733786700
person.identifier.scopus-author-id8302853800
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.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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