Helminths of Gray Toad Fingerlings (<i>Bufo bufo</i>) of Protected Areas of the Urals and Analysis of Its Parasitofauna in Russia

Abstract

Helminths of gray toad fingerlings Bufo bufo (Linnaeus, 1758) have been studied in some specially protected natural areas (protected areas) the Urals. Four species of helminths belonging to the Nematoda type were found. Common to the studied amphibian populations are 2 species of nematodes – Oswaldocruzia filiformis and Rhabdias bufonis. The species composition of geohelminths does not differ in fingerlings and sexually mature amphibians, infection in adult toads is higher than in fingerlings. The analysis of the helminth fauna of the gray toad showed that the nematodes Oswaldocruzia filiformis and Rhabdias bufonis dominate in Bufo bufo in most regions of Russia. The richest species composition of trematodes is noted in gray toads of the fauna of Mordovia.