HISTOPATHOLOGICAL EFFECTS OF VERNONIA ADOENSIS ROOTS EXTRACT ON THE LARVAE OF THE MOSQUITO CULEX QUINGUEFASCIATUS
B. Ramya Sree
Department of Biotechnology, Sree Vidyanikethan Engineering College, Tirupati
Jyothi M. Joy
Department of Pharmacognosy, Sree Vidyanikethan College of Pharmacy, Tirupati
The study was conducted to investigate the larvicidal activity of Vernonia adoensis roots methanol - water extract against Culex quinquefasciatus. The plant samples were extracted using methanol and water in the ratio 9:1. From the study the roots of Vernonia adoensis were found to have toxicity against Culex quinguefasciatus with a percentage mortality of 80% at a concentration of 2000 mg/l, 80% at a concentration of 1000 mg/l, 60% concentration of 500 mg/l and 20% concentration of 250 mg/l. The results from this study shows that Vernonia adoensis roots extract can be used as a potential insecticide against Culex quinquefasciatus. More research needs to be done to analyze the specific compounds in the plant which are acting against the larvae.
4 , 1 , 2014
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