ABSTRACT
Larvicidal efficacy of leaf extracts of Pavonia zeylanica and Acacia ferruginea were tested against the late third instar larvae of Culex quinquefasciatus. The larval mortality was observed after 24 h of treatment. The LC50 values of P. zeylanica and A. ferruginea were 2214.7 and 5362.6 ppm, respectively.
Subject(s)
Acacia/metabolism , Culex/metabolism , Insecticides/pharmacology , Malvaceae/metabolism , Plant Extracts/pharmacology , Animals , Plant Extracts/isolation & purification , Time FactorsABSTRACT
The repellent activity of a methanol extract of Ferronia elephantum leaves against Aedes aegypti was studied in the laboratory. The percentage protection in relation to the dose method was used. The repellent activity at 1.0 and 2.5 mg/cm2 concentrations gave 100% protection up to 2.14 +/- 0.16 h and 4.00 +/- 0.24 h, respectively. The total percentage protection of Ferronia elephantum was 45.8% at 1.0 mg/cm2 and 59.0% at 2.5 mg/cm2 for 10 h.
