Variation in the timing of spawning of the black sea brown trout Salmo trutta labrax pallas under artificial and natural conditions

摘要: Analysis of the maturation and spawning times Black Sea brown trout bred at fish-farming plants inhabiting natural waterways Northwestern Caucasus has demonstrated a considerable variation depending on environmental conditions, first foremost, temperature. This fact, as well analysis literature data, suggests that duration timing season cannot be used self-sufficient criteria for identifying species genus Salmo.