Free and conjugated androgen and progestin levels in the serum of stellate stur...

• Author(s): Bayunova, L. ; Semenkova, T. ; Canario, Adelino V. M. ; Gerasimov, A. ; Barannikova, I.
• Date: 2011
• Persistent ID: http://hdl.handle.net/10400.1/3821
• Origin: Sapientia - Universidade do Algarve
• Document Type: Article
• Language: English

Description

Based on the supposition that female coelomic fluid contents have a certain chemical influence on sturgeons, blood serum concentrations of free and conjugated testosterone (T), 11-ketotestosterone (11KT), 17,20b,21-trihydroxy-4-pregnen- 3-one (20bS), 17,20b-dihydroxy-4-pregnen-3-one (DHP), 11-desoxycortisol (S) and free progesterone (P4) have been measured by radioimmunoassay (RIA) and enzyme-linked immuno-sorbent assay (ELISA) in stellate sturgeon (Acipenser stellatus Pallas) males treated with female coelomic fluid (CF); CF steroid levels have also been analyzed. After treatment a significant elevation of free 20bS and glucuronidated DHP and S levels and the decrease of free T and KT levels have been observed. The obtained data support the idea that the components of CF may play some part in pheromonal effects for sturgeon reproduction.