[An assessment of the opisthorchiasis situation in the area of Irtysh-Karaganda Canal].

Helminthological investigation of the Irtysh-Karaganda Canal area was performed in the summer of 1989. In 9 storage ponds on the Shiderta and Olenta rivers 900 fish individuals, whose size was suitable for fishery have been examined, samples of water have been taken and the epidemiological assessment of modern conditions of opisthorchiasis agent circulation have been presented. The whole canal is at present favourable in view of opisthorchiasis infection.

[The morphology and biology of the cestode Schistotaenia srivastavai (Cestoda, Amabiliidae)--a new representative of the fauna of the USSR].

In 1979 to 1981 larvae of the cestode Schistotaenia srivastavai (Cestoda, Amabiliidae), a new member of the fauna of the USSR, were first found in 8 species of damselflies (Odonata, Zygoptera) from water bodies of Kustanai (north Kazakhstan) and Tselinograd (central Kazakhstan) Provinces. Adult cestodes were found in the red-necked grebe (Podiceps griseigena). Cysticercoid is described.