FN Archimer Export Format PT J TI Natural cortisol production is not linked to the sexual fate of European sea bass BT AF Goikoetxea, Alexander Servili, Arianna Houdelet, Camille Mouchel, Olivier Hermet, Sophie Clota, Frederic Aerts, Johan Fernandino, Juan Ignacio Allal, Francois Vandeputte, Marc Blondeau-Bidet, Eva Geffroy, Benjamin AS 1:1;2:2;3:1;4:2;5:3;6:1,4;7:5;8:6;9:1;10:1,4;11:3;12:1; FF 1:PDG-RBE-MARBEC-LAAAS;2:PDG-RBE-PFOM-LARN;3:PDG-RBE-MARBEC-LAAAS;4:PDG-RBE-PFOM-LARN;5:;6:;7:;8:;9:PDG-RBE-MARBEC-LAAAS;10:;11:;12:PDG-RBE-MARBEC-LAAAS; C1 MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France Ifremer, IFREMER, Univ Brest, CNRS, IRD, LEMAR, 29280, Plouzané, France MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas, France Stress Physiology Research Group, Faculty of Sciences, Ghent University, Ostend, Belgium Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina C2 IFREMER, FRANCE IFREMER, FRANCE UNIV MONTPELLIER, FRANCE INRAE, FRANCE UNIV GHENT, BELGIUM CONICET, ARGENTINA SI PALAVAS BREST SE PDG-RBE-MARBEC-LAAAS PDG-RBE-PFOM-LARN UM LEMAR MARBEC IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-p187 copubli-europe copubli-univ-france copubli-int-hors-europe copubli-sud IF 2.9 TC 3 UR https://archimer.ifremer.fr/doc/00787/89921/95783.pdf LA English DT Article DE ;Sex determination;Sex differentiation;Temperature;Cortisol;European sea bass AB In this study, we aimed to investigate the relationship between cortisol and the determination of sexual fate in the commercially important European sea bass (Dicentrarchus labrax). To test our hypothesis, we designed two temperature-based experiments (19 ℃, 21 ℃ and 23 ℃, experiment 1; 16 ℃ and 21 ℃, experiment 2) to assess the effects of these thermal treatments on European sea bass sex determination and differentiation. In the fish from the first experiment, we evaluated whether blood cortisol levels and expression of stress key regulatory genes were different between differentiating (149 to 183 dph) males and females. In the second experiment, we assessed whether cortisol accumulated in scales over time during the labile period for sex determination as well as the neuroanatomical localisation of brain cells expressing brain aromatase (cyp19a1b) and corticotropin-releasing factor (crf) differed between males and females undergoing molecular sex differentiation (117 to 124 dph). None of the gathered results allowed to detect differences between males and females regarding cortisol production and regulatory mechanisms. Altogether, our data provide strong physiological, molecular and histochemical evidence, indicating that in vivo cortisol regulation has no major effects on the sex of European sea bass. PY 2022 PD AUG SO Fish Physiology And Biochemistry SN 0920-1742 PU Springer Science and Business Media LLC VL 48 IS 4 UT 000836373500001 BP 1117 EP 1135 DI 10.1007/s10695-022-01104-1 ID 89921 ER EF