Trematode metacercariae (Plathelminthes, Trematoda) – freshwater mollusks parasites in Ukraine
Ivan Franko State University of Zhytomyr
40, Velyka Berdychivska St., Zhytomyr 10008, Ukraine
The fauna of metacercariae trematodes, which are parasites in freshwater mollusks in Ukraine, is researched. 30 species from 12 families of these helminthes are found. The cyst formation by trematode cercariae in intermediate and supplementary hosts, peculiarities of metacercariae location in mollusk organs and tissues, the formation of fibrous capsules around parasites are discussed, the specifity of trematode different species to their intermediate hosts is evaluated.
Keywords: freshwater, Gastropoda and Bivalvia, Trematoda (metacercariae)