[Distribution of cestodes among domestic ducks and free-living aquatic birds].

In 1959-1975, 3404 water birds of 18 species belonging to six orders were examined for the presence of cestodes. The birds came from 52 localities (ponds) in Bohemia and Moravia where domestic ducks were kept by the State Fishery and where also wild water fowl occurred. Cestodes of 31 species of the families Hymenolepididae, Dilepididae, Amabiliidae and Diploposthidae were found. The total number of examined birds included 2476 domestic ducks (1406 of them, i. e. 56.8%, were positive for cestodes) and 928 free-living water birds (873 of them, i. e. 94.1%, were 30 cestode species. Eight free-living bird species of the orders Anseriformes and Ralliformes (Anas platyrhynchos, Aythya ferina, A. fuligula, Fulica atra, Aythya nyroca, Anas crecca, A. querquedula and A. strepera) are significant for the circulation of cestodes as they harbour 16 cestode species also occurring in Anas platyrhynchos dom.