RESEARCH OF THE PARASITOFAAUNA OF COMMERCIAL FISH SPECIES IN THE KAZAKHSTAN PART OF THE CASPIAN SEA

Barbol Bekzhan Isenbayuly  -  Researcher, Laboratory of Parasitology, Republican state enterprise on the right of economic management "Institute of Zoology" of the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan, bekzhan.barbol@gmail.com

Popov Nikolay Nikolaevich  -  Chief Specialist, Limited Liability Partnership "KazEcoProject", Republic of Kazakhstan, 050057, Almaty, Klochkov st., 123, fich63@mail.ru

Ichthyoparasitological analysis of marine and semi-anadromous fish species in the Kazakh sector of the Caspian Sea made it possible to identify 35 parasitic organisms belonging to different taxonomic groups: 7 species of monogenetic flukes, 6 species of digenetic flukes (trematodes), 3 species of tapeworms (cestodes), 9 species of roundworms ( nematodes), including 5 species of anisakid nematodes, 1 species of acanthocephalus (acanthocephalus), 2 species of parasitic copepods (capepods) and 2 species of glochidia. There was a large variation in the indicators of extensiveness and intensity of invasion, respectively, from 2 to 55% and from 1 to 378%. The minimum values of the extensiveness of invasion were noted in river perch, which amounted to 11%, the maximum in common pike perch was 96%.

Key words: Commercial fish, parasites, extensiveness of invasion, intensity of invasion, Caspian Sea, infestation