Discriminating bluemouth, Helicolenus dactylopterus (Pisces: Sebastidae), stocks in Portuguese waters by means of otolith shape analysis

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dc.contributor.author Neves, A.
dc.contributor.author Sequeira, V.
dc.contributor.author Farias, I.
dc.contributor.author Vieira, A. R.
dc.contributor.author Paiva, R.
dc.contributor.author Gordo, L. S.
dc.date.accessioned 2020-01-10T09:23:49Z
dc.identifier.uri http://hdl.handle.net/11201/150554
dc.description.abstract [eng] The understanding of the stock structure of a species is essential to effectively manage fisheries. Otolith shape analysis has been successfully applied in stock identification using the elliptic Fourier analysis. This method was used to assess possible differences in the otolith shape of Helicolenus dactylopterus caught around the Azores, Madeira and mainland Portugal. A total of 294 individuals ranging from 23 to 29 cm in total length, equally distributed by sex and area, were analysed. The multivariate analysis of variance performed on the otolith normalized elliptic Fourier descriptors (NEFDs) revealed significant differences for both area and sex, but no interaction was found between the two factors. In the canonical discriminant analysis an overall classification success of 69.4% and 66.7% was achieved for females and males respectively. These results suggest the usefulness of otolith shape analysis for stock differentiation of bluemouth from Portuguese waters.
dc.format application/pdf
dc.relation.isformatof Versió postprint del document publicat a: https://doi.org/10.1017/S002531541000189X
dc.relation.ispartof Journal of the Marine Biological Association of the United Kingdom, 2011, vol. 91, num. 6, p. 1237-1242
dc.rights (c) Marine Biological Association of the United Kingdom , 2011
dc.subject.classification 57 - Biologia
dc.subject.classification Medi ambient
dc.subject.other 57 - Biological sciences in general
dc.subject.other Environment
dc.title Discriminating bluemouth, Helicolenus dactylopterus (Pisces: Sebastidae), stocks in Portuguese waters by means of otolith shape analysis
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/acceptedVersion
dc.date.updated 2020-01-10T09:23:50Z
dc.date.embargoEndDate info:eu-repo/date/embargoEnd/2026-12-31
dc.embargo 2026-12-31
dc.rights.accessRights info:eu-repo/semantics/embargoedAccess
dc.identifier.doi https://doi.org/10.1017/S002531541000189X

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