The present state of the leech fauna (Annelida, Hirudinea) in the Upper Irtysh cascade of water reservoirs

摘要: Hirudinea is a small and ecologically important group of aquatic organisms. However, up to date, the leech fauna Kazakhstan poorly studied. The presence large under-collected areas, such as Upper Irtysh basin, makes biodiversity studies concerning these invertebrates from relevant. In this paper, latest information on species diversity freshwater hirudofauna cascade water reservoirs, part River, presented. It includes 10 free-living parasitic species, which 7 9 inhabit Shulbinsk Bukhtarma respectively. These belong 2 orders, 3 families 6 genera. faunal list highlights four potentially new morphological (Alboglossiphonia sp., Erpobdella Piscicola sp. 1 2). Besides them, another three vilnensis, Helobdella stagnalis Theromyzon tessulatum recorded for first time in area. exact systematic position stated all taxa. Each accompanied with taxonomic synonymy, data its geographic distribution, brief summary ecological characteristics.