Physiological changes in Russian sturgeon (Acipenser gueldenstaedtii) after long-term holding and final maturation

Barannikova I., Bayunova L., Semenkova T., Trenkler I.

Published date: July 2008
Volume: 32
Number: 2 suppl.
Pagination: 321-322
Publisher: Société Française d'Ichtyologie

During a long-term holding in tanks (1 year) without feeding, male winter-form Russian sturgeon from Volga River were investigated at the beginning of anadromous migration in the spring (gonads far from maturity) until maturation the following spring. An increase of testosterone, 11-ketotestosterone, total protein and cholesterol serum concentrations was observed during holding, followed by completion of gametogenesis. After final maturation induced by LHRH-A, androgens, total protein and cholesterol levels decreased significantly; high quality sperm was received.

Keywords: Androgens - Long-term holding - Maturation - Russian sturgeon
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