ENVIRONMENTAL AND PHENOLOGICAL FEATURES OF SEASONAL ACTIVITY OF ZOOPHILOUS FLIES IMAGO IN THE ALTAI REGION
Zoophilous flies cause considerable damage to livestock breeding. An important feature in the life cycle of the flies is the duration of the flight of overwintered flies and their leave for wintering. The study has revealed the beginning and the end dates when the dominant zoophilous flies emerge from their overwintering locations. The studies and observations were conducted on the farm of the OOO “Pravda” in the Zalesovskiy District of the Altai Region. Calf-houses, cow barns, etc. were the objects under study. In the course of observations the first flies were recorded in the barns in the last ten-days of March. Their numbers began to increase gradually from the second ten-days of May steadily reaching the peak by the end of July - mid-August. The reduction of the air temperature outdoors caused the increased number of insects in the buildings. By the end of August decrease number of insects in traps was recorded. The end of the imago flight was recorded in the second ten-days of September. The daily dynamics of zoophilous flies’ activity and number depends on the temperature only. The main hatching areas include manure, uneaten feeds, etc. We have revealed the flight beginning and end dates and the flight duration of some zoophilous fly species. The obtained data was taken into account when developing fly control measures.