Steroid synthesis during oocyte maturation in the Siberian sturgeon Acipenser baerii

• Main Authors: Alberro, Andrés, Williot, Patrick, Vizziano, Denise
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Société Française d'Ichtyologie 2008
• Subjects: Acipenser transmontanus, Androgen, GnRH stimulation, MIS; Acipenser baerii; Siberian sturgeon
• Online Access: https://dx.doi.org/10.26028/cybium/2008-322sp-128; http://sfi-cybium.fr/fr/steroid-synthesis-during-oocyte-maturation-siberian-sturgeon-acipenser-baerii

This study was directed to identify the major steroid produced by follicles of the Siberian sturgeon during oocyte maturation. Among several steroids produced in vitro the 17,20β,21-trihydroxy-4-pregnen-3-one (20βS) was the most prominent both under basal and LH-stimulated conditions; while the 17,20βP was not systematically detected in the plasma of GnRHa-stimulated females. These results suggest that 20βS could be the maturing inducing steroid (MIS) for the species.