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Abstract
In the present study, extra efforts were devoted to search for some new compounds that have insecticidal activities against C.pipiens
The objective of this study is to test the insedticidal activity of the three tested IGRs; pyriproxyfen , hexaflumuron and methoxyfenozide against C.pipiens
Different concentrations of pyriproxyfen , hexaflumuron and methoxyfenozide were tested separately to study their efficacy on larval mortality then the LC50 were calculated then its effects were tested on larval duration, percent pupation , pupal duration , adult emergence , sex ratio, fecundity , fertility, body wall and fat body and testis and ovary .