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Acta Parasitologica, Vol.47, No. 3, 2002, 196-204
Faltynkova Anna (1)(2) *, Literak Ivan (3) - Cercariae of trematodes from Bythinella austriaca (Frauenfeld, 1857) agg. (Gastropoda, Prosobranchia).

(1) Institute of Parasitology AS CR, Branisovska 31, 370 05 Ceske Budejovice; (2) Faculty of Biological Sciences, University of South Bohemia, Branisovska 31, 370 05 Ceske Budejovice; Czech Republic. (3) Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Palackeho 1-3, 612 42 Brno; Czech Republic
* Corresponding author:

Snails of Bythinella austriaca agg. from streams in karstic and mountain regions of the Czech Republic (Moravia), Slovak Republic and Poland were examined for larval trematodes. A total of 549 (14.4%) snails were infected and harboured 12 species of cercariae belonging to the families Troglotrematidae, Nanophyetidae, Allocreadiidae, Lecithodendriidae, Microphallidae, and the superfamily Opisthorchioidea. No metacercariae were found in the snails, which indicates that other aquatic invertebrates are used as second intermediate hosts in these areas. It is assumed that Bythinella austriaca agg. plays an important role as the first intermediate host in the life-cycles of trematodes in the Carpathian region of Central Europe.

KEY WORDS: Cercariae, Trematoda, Bythinella austriaca agg., molluscs, streams, Czech Republic, Slovak Republic, Poland
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