Effect of defferent Aphids density on dvelopment of larvae and morphological charactres of adults of two Coccinellid species | ||
| journal of kerbala university | ||
| Article 1, Volume 8, Issue 0, January 2012, Pages 169-174 PDF (0 K) | ||
| Abstract | ||
| The effect of defferent number of aphids ( 0,2,4,8,16,32 and 64 ) daily supplied to 1st larvae instar of C. septempunctata L. and C. undempunctata L. were studies during spring season 2008 , the results showed : The average life – sparn of each larval instar was reduced signaficantly as the number of daily supplied aphid increased . The size of emerged adult ladybird beetles resulted from feding on different aphid densities were signaficantly different .The number of eggs from each femal resulted from feding on differen aphid densities were increased when 1st larval fed on 64 nymph .There was a relationhip between the averge of coccinellidadult length and weight with densities of aphid supplied daily to 1st larvl instar . The average life –sparn of each adult stage was increased signaficantly as the numbe of aphid supplied daily increased .preoviposition period was reduced signaficantly as the number of aphid supplied daily increased | ||
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