Abstract:
The paper presents data on the identification of the helminth fauna structure of ecaudate amphibians depending on the
biotic factors. 133 specimens of ecaudata amphibians (Ranidae, Bufonidae) was studied from Central Forest (Codrii
Reservation, Ciuciuleni village) and in the natural ecosystem - the Dniester River, from the village of Talmaza from the
Stefan-Voda district. As result of helminthological investigations, it was established that the structure of the helminth
fauna of ecaudate amphibians species is characterized by 17 helminths species: Haematoloechus variegatus Rudolphi,
1819; Codonocephalus urniger Rudolphi, 1819; Opisthioglyphe ranae Froelich, 1791; Paralepoderma brumpti Buttner,
1951; Prosotocus confusus Looss, 1894; Tylodelphys excavata Rudolphi, 1803; Diplodiscus subclavatus Pallas, 1760;
Parastrigea robusta Szidat, 1928, Strigea falconis Szidat, 1928; Gorgodera varsoviensis Sinitzin, 1905; Haplometra
cylindracea Zeder, 1800; Pleurogenoides medians Olsson, 1876, Cosmocerca ornata Dujardin, 1845; Oswaldocruzia
filiformis Goeze, 1782; Icosiella neglecta Diesing, 1851; Spirocerca lupi Rudolphi, 1809; Acanthocephalus ranae
Schrank, 1788, which from a taxonomic point of view fall into 3 classes (Trematoda, Secernentea,
Palaeacanthocephala), 7 orders (Plagiorchiida, Echinostomida, Diplostomida, Ascaridida, Strongylida, Spirurida,
Echinorhynchida), 16 families (Omphalometridae, Haematoloechidae, Plagiorchiidae, Lecithodendriidae, Gorgoderidae,
Diplodiscidae, Diplostomatidae, Pleurogenidae, Diplodiscidae, Strigeidae, Macroderoididae, Cosmocercidae,
Molineidae, Onchocercidae, Spirocercidae, Echinorhynchidae) and 17 genera (Haematoloechus, Codonocephalus,
Opisthioglyphe, Paralepoderma, Prosotocus, Gorgodera, Tylodelphys, Diplodiscus, Parastrigea, Strigea, Haplometra,
Pleurogenoides, Cosmocerca, Oswaldocruzia, Icosiella, Spirocerca, Acanthocephalus). It was found that the diversity of
helminth fauna of the studied amphibians is structured depending on the host species, so the greatest diversity of
helminthes in amphibians in the family Ranidae was established in Rana ridibunda and Rana lessonae with 17 species,
and the lowest diversity in Rana dalmatina species - with 5 species of helminths, and for the species from the Bufonidae
family, no different values were established, so each species being infested with 3 species of helminthes. It was
determined that the helminth fauna of the amphibians investigated according to the age of the host shows divergent
values, so that in the juveniles of the Rana ridibunda species the infestation with only 4 species of helminthes was
established. The diversity and intensity of helminth infestation of ecaudate amphibians has been established.
