Home – Home – Jornals – Contemporary Problems of Ecology 2023 number 3

In this study firstly reports the founding of the liver fluke O. felineus into the ide Leuciscus idus in the Chany Lakes system in the south of Western Siberia. The Prevalence O. felineus among the ide at the mouth of the Chulym river inflowing to Chany Lake was 1.6 ± 1.57 % in 2019 and 4 ± 2.29 % in 2020 and 5.3 ± 5.1 % in Lake Bolshie Chany. Trematode O. felineus were registered in ide during the period of water level rise and a decreasing in the water mineralization. Four other studied by us cyprinid species (roach, bream, golden carp, silver carp) the infection with opisthorchids did not found. Earlier, in the Chany lakes system and in the estuarine of inflowing rivers the Kargat and Chulym rivers, the trematode O. felineus, the causative agent of diseases of the liver and bile ducts of humans and piscivorous mammals, was not registered in cyprinids. The relationship between the prevalence of the liver fluke O. felineus in the reservoirs of the Chany Lakes system with cyclic fluctuations in the water level and the associated changes in hydrochemical parameters and general water mineralization as well as the zoonotic risk to consumers is considered, since the ide is used as food by the population.