DISSEMINATION AND SEASONAL AND AGE CHARACTERISTICS OF MARALS’ INFECTION BY STRONGYLATA HELMINTHES IN THE ALTAI TERRITORY

The paper aims at characterizing dissemination and seasonal and age features of marals’ infection by strongylata helminthes on the territory of the Altai Republic. The research on exploring marals’ infection by strongylata helminthes was conducted in 5 administrative districts of the Republic, which are located in 3 areas: Northern area (Maima district), Central (Shebalinsk, Ongudai and Ust-Koksinsk districts), and Western (Ust-Kan) Altai. The authors didn’t observe significant changes in animals’ invasion by strongylata helminthes on the territory of Central, Northern and Western Altai. Marals’ infection was about 62-65,and 41-47 0,0%, respectively. The marals inhabiting in the Northern Altai were mostly infected by strongylata helminthes with esophagostomy in the structure of helminthics. The marals inhabiting in Western and Central Altai are 2 times less infected by strongylata helminthes. The authors observed nematodes in the marals inhabiting in Central Altai, where their infection index is 1.0%. The young animals born this year has the lowest invasion by strongylata helminthes in the digestive system (12.2 % ), and the maximum invasion by protostrongylid - 96.8%. The infection rate of young animals aged 1-2 digestive tract, as well as maral males and females, by strongylata helminthes was 34.9 -40,8%; the infection rate by protostrongylids was 76,1; 41,4; 71,4% respectively. Seasonal dynamics of marals invasion by protostrongylids is characterized by maximal invasion in winter and minimum invasion in summer. Digestion strongylata helminthes’ peak of invasion occurs in the period from August to October and caused by dominance of hemangini nematodes in helminths.

maral, Strongylata helminths, infection, seasonal dynamics, age features, Gornyy Altai, natural areas

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