LARVICIDAL EFFICACY OF PLANT EXTRACTS ON AEDES AEGYPTI AND CULEX QUINQUEFASCIATUS
Journal Title: GJRA-Global Journal For Research Analysis - Year 2018, Vol 7, Issue 6
Abstract
Objective: of this study is to evaluate the larvicidal efficacy of different plants extract on two species of mosquito larvae. Materials and methods: The larvicidal potential of four different plant material extract Citrus sinensis peel, Azadirachta indica bark, Carica papaya seeds and Anacardium occidentale nut shell was tested against the fourth-instar larvae of Aedes aegypti and Culex quinquefasciatus. Insecticidal susceptibility tests were carried out using WHO standard method and the mortality was observed after 24-hour exposure. Result and discussion: All the tested plant extracts showed moderate to good larvicidal activities. However, the maximum larval mortality was detected in methanol extract of Anacardium occidentale (cashew) nut shell. The mortality rate was 100% at 600 ppm and LC50 35.53 ppm for Aedes aegypti and 38.65 ppm for Culex quinquefasciatus. Conclusion: These results revealed that larvicidal properties of the selected plants extract encouraged further effort to investigate the bioactive compounds in these extracts that might possess promising larvicidal properties.
Authors and Affiliations
Dr. Padmanabha. B
Keywords
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