NEW DATA ON THE INFECTION OF FISH WITH HEMOFLAGELLATES (PROTOZOA: KINETOPLASTEA) IN SOME WATER BODIES OF BURYATIA (EASTERN SIBERIA)

Abstract

New data were received on infection with Kinetoplastida of the family Trypanosomatidae in fish of various taxonomic groups in lakes in the Republic of Buryatia (Eastern Siberia). Kinetoplastids of the genus Trypanosoma recorded in the river perch, common pike, sand sculpin, Siberian loach, crucian carp, and Siberian roach were characterized by the greatest host diversity. The roach (Gusinoe Lake) is recorded for the first time for the Baikal basin as a host for hemoflagellates of this genus. Blood parasites of the genus Trypanoplasma were found in 3 fish species: the pike, perch, and sand sculpin. A clear trend was noted for the increasing infection level in the perch and pike of Gusinoe Lake over a 40-year period. The dace, Amur carp, Amur catfish, burbot, Amur sleeper, and common minnow from Gusinoe Lake were free from blood parasites Trypanosoma sp. and Trypanoplasma sp. Kinetoplastids were not found in roaches from Tsaidam, Shchuchye, Torma, Kotokelskoe and Bolshoye Kicherskoe Lakes. The analysis showed no infection with kinetoplastids in the roach, dace, Baunt whitefish, humpback whitefish, Siberian cisco, perch, burbot, ruff, and pike in the reservoirs of the Baunt Lakes system (Bolshoe Kopylyushi Lake, Maloe Kopylyushi Lake, Baunt Lake, the Lena basin), and crucian carp in reservoirs Klyukvennaya Pad, Cheremukhovoye Lake and Nikitkino Lake (Baikal basin).