تأُثير تغذية أبو العيد ذو الإحدى عشر نقطة بأنواع مختلفة من المن في خصوبة الطور الكامل للمفترس و طول فترة حياته

الملخص EN

Larvae of the ladybeetle, raised from the 1st instar until emergence of the adults, feeding on different aphid species were subjected to laboratory studies concerning fecundity and longevity of the adults (females or males).

The experiment included the study of “ pre-oviposition period; opposition period; post-oviposition period; female fecundity and female and male longevity Results indicated that the aphids species provided as food (i.

e.

Myzuspersica Suiz; Aphisfabae Scop.; Aphis gossypii Glover, Brevicoryne brassicae L.

and Sitobion avenae F.) to both ladybeetle larvae and adults have affected significantly such biological characters of the predator.

However, results showed the unsuitability of A gossypii and S.

avenae as preys for the predator.

This might be due to the low nutritive value of these aphid species.

Also, the aphid host plant may affect the value of the aphid as food and it has been postulated that aphids may contain toxic substances which could be obtained from the host plant Thus, it has been suggested to use the other three aphid species as favourable prey for mass rearing which are necessary for release programms.