ANALYSIS OF FISH PARASITOFAUNA IN THE SMALL ARAL SEA

Abstract

By now, parasitic diseases of fish are not registered in Kazakhstan, and they do not consider the need for anti epidemic measures to be a problem, they do not take into account the factors of over-infection when moving fish from one reservoir to another. Therefore, fisheries enterprises unknowingly by their actions without epidemiological analysis contribute to the spread of many parasitic diseases in both artificial and natural reservoirs. The main purpose of the research was to study the parasitic fauna of the fish of the Small Aral Sea in order to develop recommendations for ensuring epizootic welfare he sea. Researched fish from 6 fishing areas, differing in different hydrological, hydrochemical, hydrobiological indicator and different fish productivity. In the process of research in 9 species of fish, we identified up to 33 parasites, of which 2 species (Thominx tuberculata and Ergasilus briani) were detected for the first time. Most of all met in the Aral Sea in fish monogeneans (14 species), Digeneans (8 species) and nematodes (5 species). Up to 6 parasites have not been identified: 4 species of monogeneans (Paradiplozoon sp., Dactylogyrus sp., Gyrodactylus sp., Diplozoon sp.), of the parasitic crustaceans, one species is Lernaea sp., of the nematodes, 1 species is Nematode larvae.