Larvicidal Activity in vivo of Ethanolic and Aqueous Extracts From Moringa (Moringa oleifera Lam.) on Aedes aegypti L. (Diptera: Culicidae)

The insecticides properties of Moringa oleifera (moringa) were evaluated in Aedes aegypti larvae, throughout an entirely randomized trial, represented by ethanolic and aqueous extracts obtained from leaves, flowers, barks, seeds and moringa roots, besides the control group. Five batches of 10 in 3rd stadium larvae were distributed in distilled water, added an extract concentration of 50 mL L-1, and the control treatment (distilled water). The test reading was measured after 24, 48 and 72 hours after larvae exposure, were considered dead those who did not respond to a mechanical stimulation of a clamp. The seed ethanolic extract produced the best performance after 24 hours (34% mortality), but after 48 hours, the flower extract was the more potent (38% mortality). The largest larvicidal activity was observed with the extract concentration of 90 mL L-1. The results indicate that moringa has larvacides properties against Aedes, but its chemical constituents need to be isolated and tested separately to enhance your larvicidal activity.