Evaluation of hexane extract of Schanginia aegyptiaca Leaves against some biological aspects of mosquito, Culex quinquefasciatus Say.(Diptera:Culicidae)

Abstract

This study was evaluate conducted to the hexane extract effect of Schanginia aegyptiaca leaves on some biological aspects of Culex quinquefasciatus mosquito. The mortalities, development period ,productivity and hatchability were chosen as criteria for bioassay. The results revealed that egg mortality was 18.7% at 2 mg/ml,while the 1st,2nd,3rd and 4th larval instars were 75.9% ,62.3% , 48.3% and 46.7% respectively at the same concentration.Pupal mortality was 25.5% at the same concentration too. Accumulative mortality of immature stages was 100% at 1mgml while the developmental period was extended to 17.5 days in comparison with 12.4 days of control. Treated female productivity was169.2 eggsaft comparative with 200.7 eggsaft of control Hatchability reduced to 91.6% comparative with 97.7% of control.