PHEROMONE BY TROUT-INDUCEMENT OF STRESS

It has been found thal the stressors of different nature cause change in physiological state specific products into the medium causing a fri ght response on trout. Chemical signals of danger from to predators fi shes am pheromons of stress fishes donor from fishes recipients and ca use biochemical changes in latter. The reliance of estimation changes physiology states by biochemical criterions (also by investigation of avoidance reaction <<demolition>> in rats) is important for investigat ing of the chemical signals of functional mechanisms of fishes.