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Global population genetic structure of the sequential hermaphrodite, dusky grouper (Epinephelus marginatus)

2021Journal article Restricted access
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dc.contributor.authorVaini, Jussara Oliveira
dc.contributor.authorDomingues, Rodrigo Rodrigues
dc.contributor.authorFerrette, Bruno Lopes da Silva
dc.contributor.authorHallerman, Eric M.
dc.contributor.authorMota, Kenneth Gabriel
dc.contributor.authorBarreiros, João P.
dc.contributor.authorHilsdorf, Alexandre Wagner Silva
dc.date.accessioned2021-09-10T10:04:33Z
dc.date.available2021-09-10T10:04:33Z
dc.date.issued2021
dc.description.abstractThe dusky grouper Epinephelus marginatus is a large epinephelid species that occurs in the eastern and south-western Atlantic and western Indian Oceans. Late maturity, protogynous hermaphroditism, site fidelity, and overfishing have all contributed to its demographic decline. Connectivity and demography within a broad sampling of dusky grouper populations throughout its distribution were assessed. To do so, genetic variation at 11 polymorphic microsatellite loci and a partial sequence of the mitochondrial control region (mtCR) were evaluated. Two major mtCR lineages with a sequence divergence of 1.6% were found. The magnitude of genetic differentiation for mtCR among north and south Atlantic and Indian Ocean populations was high, with ΦST = 0.528. DEST and results of discriminant analysis of principal component revealed significant microsatellite genetic differentiation between all collection areas. Significant pairwise DEST showed moderate (0.084) to very great (0.603) differentiation. The effective population size was low for all localities, ranging between 25 (Azores Archipelago) and 311 (Rio Grande do Sul). The overall effective population size was estimated as 299 (confidence interval = 215–412), and there was no evidence of strong or recent bottleneck effects. Local and regional genetic structuring among dusky grouper populations is the consequence of the species' site fidelity, distribution across multiple oceanographic boundaries, and probably also of sequential hermaphroditism that contributes to the intensity of random genetic drift. The spatial pattern of genetic structuring of dusky groupers is such that fisheries management and conservation of population genetic integrity will have to be pursued at the local and regional scales.en
dc.description.sponsorshipSão Paulo Research Foundation (FAPESP), Grant/Award Numbers: 2015/23.883-0, 2016/20.208-3, 2017/02.420-8; Hatch Program of the National Institute of food and Agriculture, U.S. Departament of Agriculture Experiment Station; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior/Brasil (CAPES).en
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVaini, J.O., Domingues, R.R., Ferrette, B.L.S., Hallerman, E.M., Mota, K.G., Barreiros, J.P. & Hilsdorf, A.W.S. (2021). Global population genetic structure of the sequential hermaphrodite, dusky grouper (Epinephelus marginatus). "Aquatic Conservation: Marine and Freshwater Ecosystems", 31(8), 2119-2130. DOI:10.1002/aqc.3608pt_PT
dc.identifier.doi10.1002/aqc.3608pt_PT
dc.identifier.eissn1099-0755
dc.identifier.issn1052-7613
dc.identifier.urihttp://hdl.handle.net/10400.3/6043
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/full/10.1002/aqc.3608pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEpinephelus marginatuspt_PT
dc.subjectDemersal Fishen
dc.subjectPopulation Geneticsen
dc.titleGlobal population genetic structure of the sequential hermaphrodite, dusky grouper (Epinephelus marginatus)en
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUnited Kingdomen
oaire.citation.endPage2130pt_PT
oaire.citation.issue(8)pt_PT
oaire.citation.startPage2119pt_PT
oaire.citation.titleAquatic Conservation: Marine and Freshwater Ecosystemsen
oaire.citation.volume31pt_PT
person.familyNameBarreiros
person.givenNameJoão Pedro
person.identifier152644
person.identifier.ciencia-idC415-9731-4440
person.identifier.orcid0000-0003-4531-6685
person.identifier.ridD-3078-2014
person.identifier.scopus-author-id6602184125
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3f60a5c4-d28b-4b33-8603-1dbb417fe845
relation.isAuthorOfPublication.latestForDiscovery3f60a5c4-d28b-4b33-8603-1dbb417fe845

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