Larvicidal effect of Bishkatali (Polygonum hydropiper) leaf extract against Aedes aegypti (Diptera: Culicidae) larvae
Keywords:Polygonum hydropiper, Aedes aegypti, larvicidal activity, vector control, biological control, Bishkatali, LC90
Extracts of Polygonum hydropiper leaves in Methanol was introduced to the 3rd and 4th instar larvae of Aedes aegypti with various concentration (.25–1.5 μg/ml). Insecticidal assays data showed significant mortality against the Aedes aegypti larvae. The LC50 and LC90 value after 24 hours of exposure was 0.002 and 0.47 μg/ml respectively. As predicted the result showed that the larvicidal activity of P. hydropiper on Ae. aegypti larvae was dose reliant. The result clearly exhibited that methanol extract of P. hydropiper, as a potential biological control agent against Ae. aegypti larvae, is eminent.
Bangladesh J. Zool. 51(1): 119-127, 2023