Effect of host insect in some biological charactaries of the eleven  spotted   ladybird predator  Coccinella unecimpunctata   Coccinellidae: Coleoptera))

	Effect of host insect in some biological charactaries of the eleven spotted ladybird predator Coccinella unecimpunctata Coccinellidae: Coleoptera))
Euphrates Journal of Agriculture Science
Article 1, Volume 5, Issue 4, 2013, Pages 455-463
Abstract
Abstract : A field experiment were carried out during the season 2009 in Al-Mussiab / Babylon Governorate to determine the effect of different hosts insect on some biological aspects of the eleven spotted ladybird predator C. undecimpunctata .The results showed the following :- The developmental duration of the larvae and pupal of the predator differed signifficantly depending on host insect given to them . The longest duration of the larval stage 16.17 days when feeding on Aphis nerii , and shorest 11.83 days when feed on A. fabae , except the larvae feed on Dubas bug Ommatissus lybicus Deberg. not been able to development or ecdaysis and remained in the same stage till to death . The pupal stage duration was 3 days when feeding on A. fabae , with 6 days when feeding on A. nerri . predator larvae failed to go the pupal stage when feeding on Dubas or Nipaecoccus viridis eggs . Different rates of pre – ovipostion periods , the number of eggs , egg incubation periods and the length of adult life in different insect host provided food for adults, it reached a shorter period of pre – oviposition 4.33 days when feed on an insect of A. fabae and the highest for 8 days when feed on A. nerii , and the highest rate for the number of eggs reached 889.33 eggs while the lowest rate of eggs number 410. 00 eggs when feed on an insect of A. fabae and A. nerii respecivily . So that the highest time of incubation period for eggs had been recorded 4.33 days and the lowest 2.50 days when the adult feed on A. nerii and A. fabae respecivily .The longest period of adult age was 70.67 days when feed on A. fabae and shortest period 30.33 days when feed on Duas Bug .

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