Parental selection for growth and early-life low stocking density increase the female-to-male ratio in European sea bass.

ABSTRACT: 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 dev

SUBMITTER: Geffroy B 

PROVIDER: S-EPMC8245542 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature