Surveys of small mammals (insectivorous and rodents) and their ectoparasites were carried out in the Subpolar Urals (eastern macro-slope) near Mount Neroyka (Berezovsky district, Khanty-Mansi Autonomous Okrug Ugra) in different altitude zones (from 407 to 1018 m above sea level) in 2020 and 2021. A total of 15 species of parasitic gamasid mites, 1 species of ixodid ticks, 11 species of fleas and 1 species of lice were identified. Two counting methods, ditch with pitfalls and trap-lines, were used to better reveal the composition of small mammals (feeders of ectoparasites). Specific parasites of Eurasian water voles, Laelaps muris and Hyperlaelaps amphibius, dominated among gamasid mites regardless of the method of trapping insectivores and rodents. At the same time, the proportion of the Eurasian water vole in the small mammal community of the Subpolar Urals (eastern macro-slope) did not exceed 7%. The group of dominant species also included Laelaps algericus, which was recorded in only three species (of 16 small mammal species recorded in the Subpolar Urals): the Eurasian water vole, the field vole and the Middendorff's vole. Among rare species of gamasid mites, Haemogamasus dauricus is of particular interest, a species not previously recorded in the Urals and Western Siberia. Ixodes persulcatus is a single occurrence in the area. The find of this tick is one of the most northerly in the Asian part of the Russian Federation. Among representatives of flea and lice groups the share of specific species (shrews and red-backed voles) is high. This is probably due to the high mobility of shrews, their close contact with rodents, and the specificity of animal counting methods.
The purpose of the research is establishing the composition, infection rates, species and group ratio of ectoparasites of the East European vole on the northern border of the range in Western Siberia (Middle Ob Region). Materials and methods. In 2015–2018, in order to capture the provider of ectoparasites, the East European vole, we used methods of trap lines, trap trenches, and fence-traps; we recorded 173 animals from which we collected 881 specimens of gamasid mites, ixodic ticks, lice and fleas. To assess the quantitative indicators of ectoparasites, the indices generally accepted in parasitology were used. Results and discussion. In 2014, it was established for the first time that there is a sibling species of the common vole, the East European vole in the Middle Ob Region (middle taiga of the forest zone of Western Siberia). In the city of Surgut and its neighborhood, this animal is confined to the most transformed biotopes. The ectoparasite complex of the East European vole includes 26 species of parasitic arthropods. By the number of species (13) and individuals, gamasid mites predominate, and the proportion of ixodic ticks, lice and fleas put together is almost 3 times lower. In a climate of the Middle Ob Region, the list of ectoparasites will no doubt grow as the range of habitats expands and the contacts of the East European vole with other small mammals increase, and its role in maintaining pathogen circulation of natural focal infectious diseases will increase.
The purpose of the research is to study the fauna of zoophilous flies on the territory of the farms of the Palekh district of the Ivanovo region, to determine the comparative effectiveness of insecticidal preparations and the duration of their action; establish the role of zoophilous flies in the spread of helminth eggs and protozoan oocysts.Materials and methods. The faunistic collection of zoophilous flies was carried out in calf dispensaries of livestock farms in the farms of the Palekh district of the Ivanovo region. The species of zoophilic flies was determined at the Department of Infectious and Parasitic Diseases of the Ivanovo State Agricultural Academy. The comparative effectiveness of insecticidal preparations was carried out.Results and discussion. The fauna of zoophilic flies on cattle farms in the farms of the Ivanovo region of the Palekh district is represented by three families: Muscidae (92.78%), Calliphoridae (1.16%), Scatophagidae (5.69%). They are equally contaminated with eggs of pathogens of helminthoses and oocysts of pathogens of protozooses, and their role in the spread of helminthosis and protozoosis is determined by the index of dominance in the fauna of livestock buildings. The fastest effect of acute insecticidal action was observed in the drug with AD imidacloprid – 4 min. after contact of insects with treated surfaces of objects. In preparations with AD, thiamethoxam and cypermethrin showed insecticidal properties after 8 min. The longest insecticidal effect was observed in the drug with AD imidacloprid; it was 13 days, while for drugs with DV thiamethoxam and cypermethrin - a little more than half of this period.
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