Biological Characteristics Of Fish Breeding Facilities In The Water Bodies Of Yakutia

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Tyaptirgyanov M.M. , Tyaptirgyanova V.M. , Tyaptirgyanova T.M.

Abstract

The increasing anthropogenic impact on the natural complex puts the populations of commercial fish on the brink of physical destruction. The number of populations of some economically valuable fish is so low that it reaches a critical value, after which their restoration without active human participation is impossible. Organization of ichthyological monitoring is one of the measures for the conservation of biological diversity. The fishery has become unprofitable as a result of a decrease in the number of fish in the water bodies of Yakutia and a decrease in catches of the main commercial species to 67-75% over the past 10 years (Coregonus nasus (Pallas), Coregonus lavaretus pidschian (Gmelin), Coregonus muksun (Pallas), Coregonus tugun (Pallas), Stenodusleucichthysnelma (Guldenstadt), Hucho taimen (Pallas), Brachymystaxlenok(Pallas), Thymallus arcticus (Pallas), etc.). It was recommended to weaken the fishery for these species in Yakutia, shift the focus to lake fish farming and bring its catch level to the quota level in fisheries due to biological and economic overfishing.

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