Monitoring of sanitary and hygienic state of water bodies in the republic of Dagestan for egg contamination of intestinal cestodes Triaenophorus Nodulosus (Pallas, 1781) and Triaenophorus Crassus (Forel, 1868)

Abstract

Authors monitored the sanitary and hygienic state of the river and pond basin of the Republic of Dagestan for contamination of the cestodes Triaenophorus nodulosus (Pallas, 1781) and Triaenophorus crassus (Forel, 1868) eggs. The water pollution of 25 rivers and pond water bodies of Dagestan with eggs of the cestodes Triaenophorus nodulosus (Pallas, 1781) and Triaenophorus crassus (Forel, 1868) was studied in winter, spring, summer and autumn in control sections by researching 2 500 water samples using conventional methods in the laboratory of invasive diseases of animals and birds. For the presence of eggs of the cestodes Triaenophorus nodulosus (Pallas, 1781) and Triaenophorus crassus (Forel, 1868), using conventional methods in different seasons (winter, spring, summer and autumn), 100-200 samples of water and silt of vegetation of pond reservoirs in natural zones were examined. According to the results of the sanitary and hygienic examination of water and silt of natural and pond water bodies of the Republic of Dagestan for the contamination of the cestodes Triaenophorus nodulosus (Pallas, 1781) and Triaenophorus crassus (Forel, 1868) eggs, it is possible to state moderate and high levels of water pollution with eggs of these cestodes species. According to the sanitary and hygienic state, natural and pond water bodies of the Republic of Dagestan in all natural and climatic zones are unsuccessful foci of trienophorous fish invasion by eggs of the Triaenophorus nodulosus Triaenophorus (Pallas, 1781) and Triaenophorus crassus. (Forel, 1868).