EPIDEMIOLOGICAL SIGNIFICANCE OF IXODIC TICKS IN THE FLAT, FOOTHILL AND MOUNTAIN ZONES OF DAGESTAN

Abstract

New of data were obtained while studying the fauna of ixodide of Dagestan and the epidemiological significance of ixodid ticks in the plains, foothill and mountain zones of the Republic of Dagestan. The study of the species composition of ixodide mites in Dagestan was carried out in 2016–2018 on the pastures of the region. They of found of 27 types of ticks – ixodide. 2620 specimens of adult ticks were examined for infection by blood parasites. Determination of the species composition of ticks – ixodides carried out by the entomological Atlas. The fauna of Ixodids in Dagestan has about 40 species that live in the plains, foothills and mountain areas of the region. In the enzootic plague zone of Dagestan, natural infection with the plague microbe (0.4–1.6%) was found in the following species: Dermacentor marginatus, Rhipicephalus schulzei, Ixodes laguri, Hyalomma asiaticum, Haemophysalis numidiana. Of the representatives of argasso mites, the causative agent of plague Yersinia pestis is isolated from Argas persicus and Ornithodoros tartacovskii. Natural foci of tularemia in the territory of Dagestan are arranged in a mosaic pattern. In the preservation and transmission of tularemia (Fr. tularensis) take Ixodes ticks I. lagurs, Rh. schulzei, D. marginatus, Rh. rossicu. Carriers of the CCHF virus are Ixodes mites Hyalomma marginatum, H. anatolicum, H. detritum, H. asiaticum. In order to improve surveillance using the method of dynamic entomological monitoring, it is necessary to bring the species identification of ticks to 70%, which will allows to make fully trace of relationship between the parasite and the host and to conduct a full assessment of the role of ixodides in the epidemiology and epidemiology of zoonoses.