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Free and conjugated androgen and progestin levels in the serum of stellate stur...
Bayunova, L.; Semenkova, T.; Canario, Adelino V. M.; Gerasimov, A.; Barannikova, I.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-sorb...
Free androgens and progestins and their conjugated forms in serum and urine of ...
Bayunova, L.; Canario, Adelino V. M.; Semenkova, T.; Couto, E.; Gerasimov, A.; Barannikova, I.Stellate sturgeon (Acipenser stellatus Pallas) males from Volga River treated with LH-RH-A showed an increase of free, sulfated and glucuronided sex steroid levels in serum and urine at spermiation. Conjugated forms of sex steroids could act as pheromones in sturgeon.
Levels of free and conjugated androgens and progestins in coelomic fluid and se...
Bayunova, L.; Semenkova, T.; Canario, Adelino V. M.; Couto, E.; Gerasimov, A.; Barannikova, I.Stellate sturgeon (Acipenser stellatus Pallas) females from the Volga River were analysed for sex steroids after hormonal stimulation. The results show a significant increase of sulfated sex steroid levels in serum and coelomic fluid (CF) at final maturation (FM). It is hypothesized that the steroid metabolites could be part of a chemical communication system related to reproduction.
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