Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Natural cortisol production is not linked to the sexual fate of European sea bass
Goikoetxea, A.; Servili, A.; Houdelet, C.; Mouchel, O.; Hermet, S.; Clota, F.; Aerts, J.; Fernandino, J.I.; Allal, F.; Vandeputte, M.; Blondeau-Bidet, E.; Geffroy, B. (2022). Natural cortisol production is not linked to the sexual fate of European sea bass. Fish Physiol. Biochem. 48(4): 1117-1135. https://dx.doi.org/10.1007/s10695-022-01104-1
In: Fish Physiology and Biochemistry. Springer: Dordrecht. ISSN 0920-1742; e-ISSN 1573-5168, meer
|  |
| Trefwoord |
Dicentrarchus labrax (Linnaeus, 1758) [WoRMS]
|
| Author keywords |
Sex determination; Sex differentiation; Temperature; Cortisol; European sea bass |
| Auteurs | | Top |
- Goikoetxea, A.
- Servili, A.
- Houdelet, C.
- Mouchel, O.
|
- Hermet, S.
- Clota, F.
- Aerts, J., meer
- Fernandino, J.I.
|
- Allal, F.
- Vandeputte, M.
- Blondeau-Bidet, E.
- Geffroy, B.
|
| Abstract |
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. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
