[Helminths in trout (fam. Salmonidae) in freshwater reservoirs].

A survey is made of the helminths parasitizing in representatives of family Salmonidae caught mainly in the free fresh-water basins in the country. More detailed information and study concerned the American and the Balkan trout--Salmo irideus gairdneri and Salmo trutta m. fario respectively--because of their higher economic importance. In the course of the study some corrections were made of the names of some of the species in the light of the new data obtained concerning all helminths alreay mentioned in th literature. Salmo trutta m. fario was found to be the host of Crepidostomum metoecus, C. farionis, Nicolla skrjabini, N. wisniewski, N. testiobliqua, N. proavitum, Gyrodactylus truttae, Pomphorhynchus laevis, Acanthocephalus anguillae, Metechinorhynchus truttae, Cystidicoloides tennuissima, Cucullanus truttae, Rhabdochona hellihi, and Salmo irideus gairdneri was the host of Pseudochetosoma salmonicola, Gyrodactylus truttae, Contracaecumaduncum, Cystidicoloides tennussima, Rhabdochona hellihi, and Metechinorhinchus truttae. Pathogenic for S. t. m. fario proved the helminths Metechinorhynchus truttae and Pomphorhynchus laevis, and for S. gairdneri--Pseudochetosoma salmonicola, Contracaecum aduncum, and metechinorhynchus truttae. No helminths hazardous for humans were found in these trout species.