La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Using body geometric morphometrics to identify bluemouth, Helicolenus dactylopterus (Delaroche, 1809) populations in the Northeastern Atlantic
Auteurs :	Vera Sequeira, Auteur ; Rebeca Rodriguez-Mendoza, Auteur ; Ana Neves, Auteur ; Rafaela Paiva, Auteur ; Fran Saborido-Rey, Auteur ; Leonel Serrano Gordo, Auteur
Type de document :	Article
Dans :	Hydrobiologia (669(1) JUL 2011)
Article en page(s) :	133-141
Résumé :	In this study, landmark-based geometric morphometric methods were applied to evaluate the possible existence of different bluemouth, Helicolenus dactylopterus (Delaroche, 1809), populations in the NE Atlantic. Fish were obtained from commercial landings in Azores, Madeira, and Peniche (mainland Portugal). Samples from a research survey along the Galician coast (Spain) were also included in this study. A generalized procrustes analysis was done to remove non-shape variation. Then, the obtained shape variables were statistically adjusted to eliminate allometry and permit a comparative analysis of the samples. The discriminant analysis performed to test the homogeneity of the data set regarding sex revealed no shape differences between males and females within the four areas under study. The body shapes of bluemouth differed significantly among the four areas using Procrustes distances (P

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