Study of population dynamics of the olive fruit fly Bactrocera oleae (Diptera, Tephritidae); (Rossi, 1790) in the Mezghenna area

The population dynamics of the Olive Fruit Fly in the Tell Atlas has been studied for two years (May 2017-April 2019) on all phases of olive tree growth. The test was installed on an individual farm in the Mezghenna region. It is part of the ongoing work to assess the damage caused by the diptera Bactrocera oleae. The objective of this study is to collect information on adult flight and to calculate the population index (FTD) . On the other hand, we studied the annual variation of this last. The results of this study show that the olive fruit fly population fluctuates over time and from one period to another in the study area; Overall, we recorded a low density of Bactrocera oleae during the first year of study (less than 0.08 flies / trap / day). In addition, in the second year, we observed 3 population peaks concentrated in autumn and early spring; the high temperatures of summer have a negative effect on the density of the Diptere.