Trematode Metacercariae in the eyes of fish from reservoirs of Mongolia

The species composition of trematode metacercariae from the eyes of fish (Oreoleuciscus potanini and Thymallus brevirostris) was studied in the Taishir and Durgun reservoirs in 2011, four and three years respectively after their formation. Seven species of trematodes of the genera Diplostomum, Tylodelphys, Ichthyocotylurus, Posthodiplostomum were identified. The species composition of the parasites is compared with that from fish eyes in the reservoirs of the Great Lakes Depression.