Toxicity effect of Capsicum frutescens extracts on aedes Aegypti larvae (Diptera:culicidae)

Abstract

Natural product research is guided by bioactivity test. Herbal plants especially Capsicum frutescens (Family: Solanaceae) is rich sources of bioactive compounds were commonly used as medicinal and therapeutic purposes. The aims of this study were to determine the toxicity effect of C. frutescens and to compare the different toxicity effect of fruit and leaf extracts of C. frutescens on third instar of Aedes aegypti larvae. Fruit and leaf extracts were extracted using 98.99% of methanol solvent and were tested on Ae. aegypti larvae in different concentrations which were 0.25 mg/ml, 0.5 mg/ml, 1 mg/ml, 2 mg/ml and 4 mg/ml. Bioassays test exposure was done for 24 hours. The results obtained showed that LC50 value for fruits and leaves extract were 1.2692 mg/ml and 1.3929 mg/ml, respectively (P>0.05: paired t-test). There were no significant differences for both extracts of C. frutescens as P= 0.621 was more than 0.05. These show that both parts of extracts C. frutescens produced compounds and could be useful for a template of synthetic insecticides.