FAUNA OF TRICHONEMATIDS (STRONGYLIDA: TRICHONEMATIDAE) OF THE HORSES OF KARAKALPAKSTAN

The faunas of horses trichonematids were studied for the first time in the biogeocenoses of Karakalpakstan. The main material was the gathering of nematodes of the Trichonematidae family – parasites of horses of Karakalpakstan. Helminths were collected in 2016–2018 in 113 animals of slaughter animals according to generally accepted methods. When assessing the degree of infection of horses with trichonematids, standard parasitological indicators were used: the extensiveness of invasion – EI (%) and the intensity of invasion – II (specimen). Under the conditions of Karakalpakstan, in horses we found 31 species of trichonematids – parasites of the large intestine belonging to 7 genera, 3 tribes, 2 subfamilies of the Trichonematidae Witenberg family, 1925. The intensity of invasion by individual species ranged from 0.9% to 38.9%, with an intensity of invasion 8–314 copies. Cases of monoinvasions were not revealed; from 2 to 7 types of trichonematids parasitized in animals at the same time. The fauna of trichonematids of horses includes 31 species belonging to 2 subfamilies: the subfamily Trichonematinaeconsists of 30 species and Gyalocephalinae – 1 species. The combination of these species causes serious diseases under the common name – trichonematiosis, which are widely distributed in the studied region.