Study The Effect of The Type of Host In Parasitism Amenability of The Enemy Vital Aphidius transcaspicus

Abstract

The study showed laboratory influence the type of host in the efficiency of the enemy's bio on three types of aphids are peach green Myzus persicae and water melon Aphis gossypii and cucurbits Aphis craccivora The variation showed in the rates of parasitism with type of host insect it was Myzus persicae most preferred using parasitoid in the development of eggs in it, as the percentage of parasitism with 90% while the ratios of parasitism with of Aphis craceivora and Aphis gossypii 66% and 40%, respectively It also shows that there are differences in the sex ratio for adults parasitoid was the highest percentage of parasitoid on host of peach green, amounting to (0.73 females: 0.27 males) while the percentages sexual parasitoids with their hosts insect of Aphis craceivora(Koch) and on Aphis gossypii (0.7 females: males 0.27) and (0.7 females: 0.3 male), respectively.