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Costs, revenues, net income and rate of return on investment of rearing sturgeon for production of both meat and roe for caviar are analyzed by a computer simulation model for three sizes of hatchery-growout operations: capacities for handling 5, 10, and 15 broodstock. Biological relationships regarding growth, feed consumption, sexual maturity, and mortality interact with management decisions about...
Physiological evidence in white sturgeon Acipenser transmontanus suggests that two gonadotrophins, termed sturgeon gonadotropin I (stGTH I) and sturgeon gonadotropin II (stGTH II), are involved in regulating reproduction. Pituitary and plasma concentrations of stGTH I were found to be higher than concentrations of stGTH II during vitellogenesis and the early stages of spermatogenesis. Conversely,...
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