THE QUESTION INFECTED BITHYNIA TENTACULATA SPECIES OF THE GENUS TREMATODA

At the moment the problem about pollution of the city is very important. In this context, the aim of our work was to study the infection of species Trematoda of the genus Bithynia. Our objectives are: to identify the degree of contamination of shellfish, gender invasive species and stage of development of the parasite in them. As a result of weeks of observation the number of infected shellfish cercariae was 85.3%. Opening of infected individuals showed that in 46.3 % of cases were smitten functional females, 14.6% – men. However, in 39.1 % of cases, we observed the complete destruction of the primary host of trematode metacercariae. The results indicate the presence of representatives of the mollusks pathogenic to humans parasitofauna. Some of them, according to the literature, can be agents of opisthorchiasis and trihobilgartsioza. If the first person can be infected through consumption of fish, the second – when bathing in a pond