Screening of some weed extracts for ovicidal and larvicidal activities against dengue vector Aedes aegypti

Abstract Background The use of plant-based formulations is an easy and economical method to control insect pests. objectives the present study were evaluate ovicidal larvicidal potential ethanolic leaf extracts four plants, Cyathocline purpurea , Blumea lacera Neanotis lancifolia montholonii their effects on gut histology Aedes aegypti (Diptera: Culicidae) larvae. We identified phytochemicals in these plants by LC-MS analysis. eggs larvae A. exposed concentrations (0.05, 0.1, 0.2, 0.3 mg/mL) crude ethanol for different time durations. observed egg hatching 48 h, mortality, 3rd instar after 24, 48, 72 h treatments. Results analysis revealed presence various active compounds such as alkaloids, tannins, saponins, flavonoids all plants. showed activity. C. highest activity (LC 50 at = 0.088 followed B. 0.758 while N. did not show significant All plant affected morphology concentration treatment duration-dependent manner. used have properties Conclusion These results suggest that has against can be further evaluated application purposes.