Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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SPECIES COMPOSITION AND CILIATA (CILIOPHORA) OCCURRENCE FROM SOME WATERS OF WOODED STEPPE FROM OMSK REGION

Likhaschev S.F. 1 Sinenko N.N. 2 Linnik A.A. 2
1 Chelyabinsk State University
2 Omsk State Pedagogical University
Analysis of species composition and occurrence of free-living ciliates from some water bodies of forest steppe zone from the Omsk region was reseached. In the surveyed waters (lake Ivanovskoe, Kamyshlovsky glen, Nizhneirtyshskaya and Uvalnaya Bitiya oxbows) 39 species of ciliates (Ciliata, Ciliophora) relating to 23 genera were totally found. All surveyed ponds belong to the basin of the Irtysh River and are confined to its floodplain. Kamyshlovsky glen, Nizhneirtyshskaya and Uvalnaya Bitiya oxbows are located in the central part of the forest-steppe zone of the Omsk region, the lake Ivanovskoe is in the south. Despite their common origin, the surveyed water bodies have different hydrological and hydrochemical conditions, which probably determine the differences of species composition of ciliates in the surveyed reservoirs. Among all found species the 18 ones were met in waters, and 9 species found in the most of the surveyed samples. On the occurrence in water bodies and the samples the types Coleps hirtus, Dileptus anser, Loxodes rostrum, Colpoda cucullus, Stylonychia mytilis, Vorticella convallaria, V. picta, Paramecium aurelia, Tetrahymena pyriformis can be attributed to the dominant faunal species of ciliates surveyed reservoirs. All these species are considered as indicator species of allochthonous and of autochthonous water pollution and determine the α-β-mesosaprobic pollution zone