Biological studies of Diaeretiella rapae (McIntosh) on cabbage aphid (Brevicoryne brassicae) infesting cole crops
The present study discovered that the third instar nymphs of cabbage aphid, Brevicoryne brassicae, were found as most preferred host for parasitism by primary parasitoid, Diaeretiella rapae, on cole crops. A single mated pair of endoparasitoid killed a total of 24.20 aphids over a period of five days, follwed by the fo...