Component communities of parasites and interaction of the parasitic faunas of noncommercial fishes in the Kacha River (Yenisei Basin)

Abstract

The work is the first to determine the structure of the communities of parasites of the noncommercial fish species in the Kacha River (Yenisei tributary). The studied communities are formed primarily with the generalist species (68%) with an insignificant share (16%) of the specialist species. Only one species (Trichodinella epizootica Raabe, 1950) with the occurrence >70% is attributed to the primary occurring species, and three, to the secondary (Paratrichodina incisa, Lom, 1959, Diplostomum phoxini Faust, 1918, Rhabdochona denudata (Dujardin, 1945)). All remaining species (46) are additional. The characteristic feature of the parasitic fauna of the fishes in Kacha is the extremely low Jaccard similarity coefficients, which indicates the peculiarity of the ecological niches of the studied hosts.