Some Data on Nematoda Fauna in Meadow Cenoses of the Upper Volga Basin

Ann inventory of the fauna of phytonematodes in cenoses of a wetland meadow and a cultivated meadow was carried out based on the data of taxonomic and ecological-trophic analysis. Totally 44 species belonging to 7 orders and 33 genera were revealed in the swampy proximately equal: 27 species in the swampy meadow fauna and 29 in the cultivated meadow fauna. Only 12 species of nematodes were common to both meadow communities, which amounted to 27% of the total number of the nematode species. Omnivorous nematodes (polyphages) and bacteriophages were predominant m the soil of the swampy meadow. They amounted to 40% and 22% of the total number of nematode species respectively. Bacteriophages, polyphages and mycophages were the most numerous groups in the soil of the cultivated meadow, amounting to 31%, 24% and 20% respectively.