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Differentiation of spatial units of Genus Euthynnus from the Eastern Atlantic and the Mediterranean using Otolith Shape Analysis

dc.contributor.authorMuñoz-Lechuga, Rubén
dc.contributor.authorSow, Fambaye Ngom
dc.contributor.authorConstance, Diaha N’Guessan
dc.contributor.authorAngueko, Davy
dc.contributor.authorMacías, David
dc.contributor.authorMassa-Gallucci, Alexia
dc.contributor.authorda Silva, Guelson Batista
dc.contributor.authorGonçalves, Jorge Manuel Santos
dc.contributor.authorLino, Pedro G.
dc.date.accessioned2023-07-21T14:04:51Z
dc.date.available2023-07-21T14:04:51Z
dc.date.issued2023-06-15
dc.date.updated2023-06-27T13:22:15Z
dc.description.abstractThe shape of sagitta otoliths was used to compare individuals of little tunny (Euthynnus alleteratus) harvested on board commercial fishing vessels from the coastal areas along the Eastern Atlantic, including the Mediterranean Sea. Fish sampling and selection was designed to cover possible seasonal changes and tuna size. The research encompassed both morphometric and shape analyses of left sagittal otoliths extracted of 504 fish specimens. Four shape indices (Circularity, Roundness, Rectangularity, and Form-Factor) were significantly different between two groups, showing a statistical differentiation between two clear spatial units. The degree of divergence was even more pronounced along the rostrum, postrostrum, and excisura of the generated otolith outlines between these two groups. One group corresponds to the samples from the coastal areas in the Northeast Temperate Atlantic and Mediterranean Sea (NETAM Area) and a second group from the coastal areas off the Eastern Tropical Atlantic coast of Africa (ETA Area). This study is the first to use otolith shape to differentiate tunas from separate spatial units. These results could be used to re-classify previously collected samples and to correct time series of data collected.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifierdoi: 10.3390/fishes8060317
dc.identifier.citationFishes 8 (6): 317 (2023)pt_PT
dc.identifier.doi10.3390/fishes8060317pt_PT
dc.identifier.issn2410-3888
dc.identifier.urihttp://hdl.handle.net/10400.1/19860
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectStock delimitationpt_PT
dc.subjectTunapt_PT
dc.subjectMorphologypt_PT
dc.subjectFish populationpt_PT
dc.subjectShaperpt_PT
dc.titleDifferentiation of spatial units of Genus Euthynnus from the Eastern Atlantic and the Mediterranean using Otolith Shape Analysispt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue6pt_PT
oaire.citation.startPage317pt_PT
oaire.citation.titleFishespt_PT
oaire.citation.volume8pt_PT
person.familyNameGonçalves
person.givenNameJorge Manuel Santos
person.identifier356846
person.identifier.ciencia-id1013-ED6A-65EB
person.identifier.orcid0000-0001-7704-8190
person.identifier.ridG-5206-2011
person.identifier.scopus-author-id7103326116
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationdd7829e9-e294-4297-8fb2-adf83c8623cf
relation.isAuthorOfPublication.latestForDiscoverydd7829e9-e294-4297-8fb2-adf83c8623cf

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