FN Archimer Export Format
PT J
TI Parental selection for growth and early-life low stocking density increase the female-to-male ratio in European sea bass
BT 
AF Geffroy, Benjamin
   Gesto, Manuel
   Clota, Frederic
   Aerts, Johan
   Darias, Maria J.
   BLANC, Marie-Odile
   Ruelle, Francois
   Allal, Francois
   Vandeputte, Marc
AS 1:1;2:2;3:3,5;4:4;5:6;6:1;7:1;8:1;9:3,5;
FF 1:PDG-RBE-MARBEC-LAAAS;2:;3:;4:;5:;6:PDG-RBE-MARBEC-LSEA;7:PDG-RBE-MARBEC-LSEA;8:PDG-RBE-MARBEC-LAAAS;9:;
C1 MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
   Techn Section for Aquaculture, DTU Aqua, Technical University of Denmark, Willemoesvej 2, 9850, Hirtshals, Denmark
   Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France
   Stress Physiology Research Group, Faculty of Sciences, Ghent University, Ostend, Belgium
   MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
   MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
C2 IFREMER, FRANCE
   UNIV TECH DENMARK (DTU AQUA), DENMARK
   INRAE, FRANCE
   UNIV GHENT, BELGIUM
   INRAE, FRANCE
   IRD, FRANCE
SI PALAVAS
SE PDG-RBE-MARBEC-LAAAS
   PDG-RBE-MARBEC-LSEA
UM MARBEC
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-p187
   copubli-europe
IF 4.997
TC 9
UR https://archimer.ifremer.fr/doc/00705/81662/86147.pdf
   https://archimer.ifremer.fr/doc/00705/81662/86148.docx
   https://archimer.ifremer.fr/doc/00705/81662/86149.tif
LA English
DT Article
AB In European sea bass (Dicentrarchus labrax), as in many other fish species, temperature is known to influence the sex of individuals, with more males produced at relatively high temperatures. It is however unclear to what extent growth or stress are involved in such a process, since temperature is known to influence both growth rate and cortisol production. Here, we designed an experiment aiming at reducing stress and affecting early growth rate. We exposed larvae and juveniles originating from both captive and wild parents to three different treatments: low stocking density, food supplemented with tryptophan and a control. Low stocking density and tryptophan treatment respectively increased and decreased early growth rate. Each treatment influenced the stress response depending on the developmental stage, although no clear pattern regarding the whole-body cortisol concentration was found. During sex differentiation, fish in the low-density treatment exhibited lower expression of gr1, gr2, mr, and crf in the hypothalamus when compared to the control group. Fish fed tryptophan displayed lower crf in the hypothalamus and higher level of serotonin in the telencephalon compared to controls. Overall, fish kept at low density produced significantly more females than both control and fish fed tryptophan. Parents that have been selected for growth for three generations also produced significantly more females than parents of wild origin. Our findings did not allow to detect a clear effect of stress at the group level and rather point out a key role of early sexually dimorphic growth rate in sex determination. 
PY 2021
PD JUL
SO Scientific Reports
SN 2045-2322
PU Springer Science and Business Media LLC
VL 11
IS 1
UT 000671791200049
DI 10.1038/s41598-021-93116-9
ID 81662
ER

EF