تأثير درجات حرارة التربية و نوع الفريسة في نمو الأطوار غير الكاملة للمفترس أبو العيد Serangium parcesetosum Sicard (Coleoptera : Coccinellidae)‎

Abstract EN

The effect of temperature and four prey species of uhiteflies on development of the immature stages of the predator, Serangium parcesetosum Sicard was investigated.

The average developmental periods for the predator fed on thecottonwhitefly,Bemisia tabaci (Gennadius) were 23.75+l.l6,l5.69tt.42,14.3Ot2.23and12.93t0.79dayswhenkeptat2ltl,27+l,32lland27-32'C,respectively.All teatments were sigrificantly different.

Larvae of the predator failed to survive when fed on Paraleyrodes minei (Lacca;no).

Averages of total developmental period of the predater reached 15.76]:1.34, 17.30i,1.34 and 17.89t1.25 days, when fed on 8.

tabaci (Gewradius), Aleurothins floccosus Maqkell and Dialeurodes citri (Ashmead), at25oC, respectviely.

Sigrificant difference was found between B.

raDaci (Gennadius), and the two other species, when used as preys.

The best survival rate of the predator immature stages was recorded when fed on B.

nbaci (Gennadius), at25"C.