The actual and important task of the contemporary ecological biochemistry is the search and the installation of the effective biochemical molecular markers, determinating the replied reactions of hydrobionts on man-made pollution of the water ecosystems in the conditions of Kola Nord. The scientists suggest such biochemical indicators as the content of carotines, tokoferols, glutation, enzymes, retinol and others. We suggest such effective molecular bioindicators as the activity of the proteases in the muscle tissues of north fishes, the content of carotinoides, macroergic compounds (ATP), which fix the reactions of north hydrobionts on environmental pollution.
Effective molecular indicators give possibility to determine the mechanism of biochemical adaptation of fishes.
We research the chemical content and biochemical properties of salmon (Salmo salar), rearing in the conditions of the artificial reproduction, the dependence of biochemistry of this fish on stage of the life´s cycle, the sex, the age. We study the interaction of hydrochemical parameters of water and chemical content of the tissues of Arctic salmon (Salmo salar). The scientists of our department carry out the determination of next characteristics as content of water, lipids, vitamins, carotins, proteins, metabolic products, activity of enzymes and others, the influence of such important factor, as salinity of sea water, on morphology of the salmon.
We also study the biochemical properties of sea and freshwater trout, rearing in the conditions of artificial reproduction, the influence of the life´s cycle, the sex, the age of the fish on the chemical content of the tissues of the trout. The aim of our research is the comparative analysis of properties of sea and freshwater trout, especially young fish. We also determine content of water, lipids, vitamins, carotins, proteins, carbohydrates, metabolic products, activity of enzymes (proteases) and others characteristics in tissues of the trout. Our results show the strong influence of such important factor, as salinity of sea water, on morphology of the trout. Seasonal dynamics of investigated hydrobiont parameters mainly depends on life´s cycle and environmental factors (the content of the pollutant chemicals in aquatic ecosystems). The data of our investigations show that this research is actual for estimation of state of sea and freshwater ecosystems of North Basin.