Determination of adult population fluctuations of the Mediterranean fruit fly [Ceratitis capitata (Wiedemann) (Diptera: Tephritidae)] in some fruit orchards in Bursa

Within the scope of this thesis, the variation of Medfly fruit fly adult populations in conventional pear, peach and persimmon orchards in Gürsu district of Bursa province in 2021 was followed by weekly counts. For this purpose, 2 traps known as Decis traps per garden were hung at a height of 1.5 m. In addition to the conventional insecticide applied orchards, the trap counts made in the untreated gardens were also used as control. The first Mediterranean fruit fly adult was detected in Decis traps on August 23. Following this, population growth continued until the week of November 8, and the catching of adults in all orchards reached its peak on this date. When the total adult traps were caught according to the orchards, a total of 678 Mediterranean fruit flies were caught in the traps in the pear orchards, a total of 660 in the traps in the peach orchards, and a total of 1402 in the traps in the persimmon orchards. In the ANOVA analysis, statistically significant differences were found in terms of catching adults in traps compared to fruits. According to our results, although the producers intensively use insecticides with Malathion, Lambda-cyhalothrin and Deltamethrin active substances in chemical control against the Mediterranean fruit fly in the gardens where the application is made, it is seen that the number of adults caught in the traps is high and the fruits are bruised. In the light of these data, it is recommended to conduct resistance studies against the above-mentioned insecticides in Medfly fruit fly populations in our province and to expand the use of Tephri traps, which will be useful in terms of adult population monitoring and biotechnical and chemical control, as in this study.