الكثافة النسبية لأعداد المتطفلات و المفترسات الحشرية المرافقة لذبابة ثمار الزيتون Bactrocera oleae (Gmelin)‎ في منطقة خان أرنبة، القنيطرة، سورية

الملخص EN

Field studies were carried out to determine the relative abundance of natural enemies associated with the olive fruit fly Bactrocera oleae in an olive field at the research station in Quneitra, Syria.

Three species of hymenopteran parasitoids were identified on olive fruit fly including Psyttalia concolor, Pnigalio mediterraneus and Eupelmus urozonus, in addition to the predator fly Prolasioptera berlesiana (Diptera: Cecidomyiidae).

The study also showed variability in the parasitism rate and relative abundance between the species during the season.

The most abundant parasitoid was P.

concolor (51.47%), followed by E.

urozonus (31%) and P.

mediterraneus (17.53%).

The average numbers of the predatory fly P.

berlesiana reached 11.71 fly / 50 fruits during the season.

Keywords: Fruit fly, olive, parasitoids, Syria, al-Qunaitera