Larvicidal activity of Selected Medicinal Plant extracts against Aedes aegypti, Anopheles stephensi and Culex quiquefasciatus (Diptera: Culicidae (original) (raw)

The current study was aimed to evaluate the larvicidal activity of methanolic crude extracts of Azadirachta indica and Melia azedarach (40, 60, 80 and 100 ppm) against different instars of three mosquito species Aedes aegypti, Anopheles stephensi and Culex quiquefasciatus. The crude methanolic extracts of A.indica showed highest mortality against A. aegypti, A. stephensi and C. quiquefasciatus in the range of 90.6, 93.37 and 83.6 % respectively at 100 ppm, where as the M. azedarach showed 90.37, 96.37 and 88.3 % against A. aegypti, A. stephensi and C. quiquefasciatus at 100 ppm. The LC50 values of A.indica and M. azedarach were 51.48, 48.26 ppm against A.aegypti, 41.98, 43.32 ppm against A.stephensi and 54.27, 52.82 ppm against C. quiquefasciatus. The results evidenced that the methanolic extracts of A. indica and M. azedarach have potential activity to control the larval instar of A. aegypti, A.stephensi and C.quiquefasciatus.