Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 9. (Budapest, 1976)

To the Knowledge of the Monogenea-fauna in Hungary Dr. Kálmán MOLNÁR Veterinary Research Institute of the Hungarian Academy of Sciences, Budapest "To the knowledge of the Monogenea-fauna in Hungary. " - Molnár, K. - Parasit. Hung. _9. 31 -33. 1976. ABSTRACT. The occurrence of the monogenean trematodes Dactylogyrus achmerowi, D. rarissimus and Gyrodactylus stankovici in Hungary is described by the author for the first time. Leucaspius delineatus happens to be a new host of Dactylogyrus minor

. During detailed studies of the previous years on the fauna of Hungary we stated the incidence of numerous monogenean trematodes (MOLNÁR, 1964a, b; 1968; 1970; MOLNÁR and NEMETH, 1962). The number of the detected species has later been increased by examinations of the river Tisza by ERGENS et al. (1975). In the present study those monogenean trematodes are described the presence of which has not been known so far or which seem to be important for some reason or other. Dactylogyrus achmerowi Gussev, 1955 Locality: Bikal, Pond farm (County Baranya) Host: Cyprinus carpio Intensity: 1-3 This parasite has been known to occur only in the Soviet Union and Mongolia up to now. It was described by GUSSEV (1955) from the river Amur. It was found later by ERGENS and DULMAA (1969) in Mongolia, by VISMANIS and PESLAK (1963) in Latvia, by OSMANOV (1971) and URAZBAJEV (1974) in Central Asia. In this territories the Amur carp (Cyprinus carpio haematopterus) is either indigenous or bred as introduced fish. It was possible, therefore, to presume that D. achmerowi got to Europe with this subspecies of carp. There is no Amur carp in Hungary, thus detecting the occurrence of this parasite refers to the fact that this species spread in a passive way. On the other hand, the indigeneity of this rare, tiny-size Dactylogyrus species cannot be precluded either. Dactylogyrus bicornis Malewitzkaja, 1941 Locality: Csaszarpatak, by Lake Velence (County Fejér) Host: Rhodeus sericeus amarus Intensity: 1-2 Of this parasite only a few specimens were found even at post mortem examination of a great number of fishes originating from various catchment areas of rivers. Its occurrence in Transdanubia was stated for the first time. It was ERGENS et al. (1975) who found it in the stream Tápió, and ZITNAN (1966) reported it from the Slovak reach of the river Tisza.