摘要：The Ponto-Caspian snail Lithoglyphus naticoides was recorded for the first time in Lake Lukomskoe in 2003. During parasitological examinations conducted in May and August 2006, the snail was found to harbor cercariae of three trematode species: Palaeorchis sp., Rossicotrema donicum and Sphaerostomum bramae . The finding of R. donicum is especially alarming because this highly specific parasite of L. naticoides can cause severe epizootics among its second intermediate hosts, i.e. perch and cyprinid fishes.
