In vitro Bioactivity Evaluation of Ziziphus mauritiana Lam. (Bidara) Leaves Extract against Vector Mosquitoes Aedes spp. and Culex quinquefasciatus

Ziziphus mauritiana methanol crude extract was evaluated for its insecticidal properties against Aedes aegypti, Ae. albopictus, and Culex quinquefasciatus mosquito larvae. Bioassays larvae mosquitoes were done following World Health Organization’s guidelines. Late third and/or early fourth instar of larva assayed five different concentrations viz. 100, 150, 200, 250, 300 mg ml–1 Z. extracts. From the results obtained, aegypti most susceptible to The percentage mortality exhibited above 50% in 24, 48, 72 hr exposure. Thus, it gives lowest LC50 within 24 exposure (121.98 L–1), followed by albopictus (189.89 L–1) Cx. (246.22 L–1). Observation morphology effect dead shows affected, quinquefasciatus. A ruptured midgut observed 100 200 concentrations. In contrast, higher ml–1, abdominal segments indistinguishable, head thorax regions severely damaged. This study suggested that methanolic extracts potent have potential be used as an alternative larvicide population control. However, further studies are required establish larvicidal effects field setting.