Comparison of 0- and 2-group otolith elemental signatures to discriminate Solea solea nurseries in the bay of biscay

• Main Authors: Durieux, Eric D H, Labonne, Maylis, Bégout, Marie-Laure, de Pontual, Hélène
• Other Authors: Sciences et Technologies Halieutiques (STH), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Sciences pour l'environnement (SPE), Université Pascal Paoli (UPP)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2011
• Subjects: flatfish; population; connectivity; Bay of Biscay; otolith; microchemistry; [SDE]Environmental Sciences; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; North East Atlantic
• Online Access: https://hal.science/hal-00803372; https://hal.science/hal-00803372/document; https://hal.science/hal-00803372/file/8thIFS_poster_Durieux_et_al_2011.pdf

International audience The common sole Solea solea (L.) is a commercially important and widely distributed flatfish of the North-East Atlantic. For the Bay of Biscay stock, sole nurseries display differences in terms of quantity and quality. In fine the measure of the quality of a habitat for juveniles of a particular species is expressed by the contribution to the recruitment into the adult population. Understanding this connectivity between juvenile and adult habitats, i.e. evaluating the contribution of each nursery to a single adult stock appears essential in terms of stock management. However, this critical link is still missing for the Bay of Biscay sole stock. Determining if nurseries could be discriminated using otolith elemental composition analysis constitutes the first step in evaluating the relative contribution of these nurseries into the adult stock. The aim of this study was to compare otolith elemental signatures of sole juveniles from two different ages (0-group and 2-group) captured at the same time in the six main nurseries of Bay of Biscay along the French Atlantic coast.