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Abstract

The study aimes to investigate the effects of leaves & fruits ethanolic extractof Duranta repensL.on biological performance for all stages of life cycleof the mosquito Culex pipiens piepiensL., For this purpose the mosquitoes were reared in the laboratory till the fourth generation .Different concentrationsofleaves (800,1000,1200,1400ppm) andfruits(800,1000,1200ppm) were tested on (eggs,larval stages,pupal stages and the adult stages). The results revealed that the extracts gavehighest mortality rate for the eggs at(100%) compared with control,fruits extract shown highest mortality rate of thefour larval instars(100%)at 1200ppm compared with leave extract at(80,50,33.33,20%).Also the extract caused ahigh mortality rate for pupal stage compared withfruits extract at(76.66,53.33%)respectively.Also ethanolic extract caused a 83.33,76.66% for male &femail. Developmental deformation was observed.. In conclusion, the findingsofthe present study indicate that the leaves &fruitsextractsof Duranta repensL., , can be widely and effectively used in the control of mosquito.

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