THE NUMBER OF MAIN SPECIES OF BARK BEETLES (SCOLYTINAE) AND PROTECTIVE MEASURES IN THE MOUNTAIN FORESTS OF THE ZAILI ALATAUNurzhan Mukhamadiyev, J. Bolat, A. Koigeldina and Gulnaz Mengdibayeva
In 2018-2019, the hanging of traps was carried out from April 15 to April 30, and they were inspected regularly every 7-12 days. From the family of bark beetles (Scolytinae), there were 17 species, including the purple or small spruce bark beetle Hylurgops palliatus Gyllenhal, which we collected earlier in Central Asia in the Tien Shan. The largest number was found - gauserâs bark beetle (Ips hauseri Reitt.). In laboratory conditions, experiments were conducted to evaluate the biological effectiveness of the mushroom preparation actarofit. It was found that on the 8th day, the bark beetle mortality rate was 77.5%, in the control variant, the beetle mortality rate was 2.5%. Biological product âActarofit Keâ D. V. aversectin C, 0.2% - a natural mixture of avermectins. produced by the soil fungus Streptomyces avermitilis. The mechanism of action of the drug is based on the ability of a highly virulent strain of Streptomyces avermitilis to infect pests. Affecting the fat body and hemolymph of the insect, the microorganism produces a number of entomotoxins that lead to the death of the pest.