FN Archimer Export Format PT J TI Otolith morphogenesis during the early life stages of fish is temperature-dependent: Validation by experimental approach applied to European seabass (Dicentrarchus labrax) BT AF MAHE, Kelig CLOTA, Frederic BLANC, Marie-Odile BLED--DEFRUIT, Geoffrey CHATAIN, Beatrice DE PONTUAL, Helene AMARA, Rachid ERNANDE, Bruno AS 1:1;2:2;3:3;4:1;5:3;6:4;7:5;8:6; FF 1:PDG-DGDS-RBE-HMMN;2:;3:PDG-DGDS-RBE-MARBEC-LSEA;4:PDG-DGDS-RBE-HMMN-LRHBL;5:PDG-RBE-MARBEC-LAAAS;6:PDG-DGDS-RBE-HALGO-LBH;7:;8:PDG-DGDS-RBE-MARBEC-LEGPM; C1 IFREMER, Unit HMMN, Laboratoire ressources halieutiques, Boulogne-sur-mer, France INRA, Unit 0558, Department PHASE, Nouzilly, France MARBEC, Université Montpellier, Ifremer, CNRS, IRD, Montpellier, France IFREMER, Centre de Bretagne, Sciences et Technologies Halieutiques, Plouzané, France Université Littoral Côte d'Opale, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, Wimereux, France Evolution and Ecology Program, International Institute for Applied Systems Analysis, Laxenburg, Austria C2 IFREMER, FRANCE INRAE, FRANCE IFREMER, FRANCE IFREMER, FRANCE UNIV LITTORAL COTE D'OPALE, FRANCE IIASA, AUSTRIA SI BOULOGNE PALAVAS BREST MONTPELLIER SE PDG-DGDS-RBE-HMMN PDG-DGDS-RBE-MARBEC-LAAAS PDG-DGDS-RBE-MARBEC-LSEA PDG-DGDS-RBE-HMMN-LRHBL PDG-RBE-MARBEC-LAAAS PDG-DGDS-RBE-HALGO-LBH PDG-DGDS-RBE-MARBEC-LEGPM UM MARBEC DECOD IF 2 TC 0 UR https://archimer.ifremer.fr/doc/00885/99719/109749.pdf https://archimer.ifremer.fr/doc/00885/99719/109750.docx LA English DT Article DE ;directional asymmetry;growing degree-day;multivariate mixed-effects models;ontogenic effect;otolith shape AB Otolith shape is often used as a tool in fish stock identification. The goal of this study was to experimentally assess the influence of changing temperature and ontogenic evolution on the shape component of the European seabass (Dicentrarchus labrax) otolith during early-life stages. A total of 1079 individuals were reared in a water temperature of 16°C up to 232 days post hatch (dph). During this experiment, several specimens were transferred into tanks with a water temperature of 21°C to obtain at the end of this study four different temperature treatments, each with varying ratios between the number of days at 16 and 21°C. To evaluate the otolith morphogenesis, samples were examined at 43, 72, 86 and 100 dph. The evolution of normalized otolith shape from hatching up to 100 dph showed that there were two main successive changes. First, faster growth in the antero-posterior axis than in the dorso-ventral axis changed the circular-shaped otolith from that observed at hatching and, second, increasing the complexity relating to the area between the rostrum and the anti-rostrum. To test the effect of changing temperature, growing degree-day was used in three linear mixed-effect models. Otolith morphogenesis was positively correlated to growing degree-day, but was also dependent on temperature level. Otolith shape is influenced by environmental factors, particularly temperature, making it an efficient tool for fish stock identification. PY 2024 PD APR SO Journal of Fish Biology SN 0022-1112 PU Wiley / Blackwell DI 10.1111/jfb.15736 ID 99719 ER EF