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Savarimuthu Ignacimuthu 1 Article
Ovicidal and Oviposition Deterrent Activities of Medicinal Plant Extracts Against Aedes aegypti L. and Culex quinquefasciatus Say Mosquitoes (Diptera: Culicidae)
Appadurai Daniel Reegan, Munusamy Rajiv Gandhi, Micheal Gabriel Paulraj, Savarimuthu Ignacimuthu
Osong Public Health Res Perspect. 2015;6(1):64-69.   Published online February 28, 2015
DOI: https://doi.org/10.1016/j.phrp.2014.08.009
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AbstractAbstract PDF
Objectives
To evaluate the ovicidal and oviposition deterrent activities of five medicinal plant extracts namely Aegle marmelos (Linn.), Limonia acidissima (Linn.), Sphaeranthus indicus (Linn.), Sphaeranthus amaranthoides (burm.f), and Chromolaena odorata (Linn.) against Culex quinquefasciatus and Aedes aegypti mosquitoes. Three solvents, namely hexane, ethyl acetate, and methanol, were used for the preparation of extracts from each plant.
Methods
Four different concentrations—62.5 parts per million (ppm), 125 ppm, 250 ppm, and 500 ppm—were prepared using acetone and tested for ovicidal and oviposition deterrent activities. One-way analysis of variance (ANOVA) was used to determine the significance of the treatments and means were separated by Tukey's test of comparison.
Results
Among the different extracts of the five plants screened, the hexane extract of L. acidissima recorded the highest ovicidal activity of 79.2% and 60% at 500 ppm concentration against the eggs of Cx. quinquefasciatus and Ae. aegypti, respectively. Similarly, the same hexane extract of L. acidissima showed 100% oviposition deterrent activity at all the tested concentrations against Cx. quinquefasciatus and Ae. aegypti adult females.
Conclusion
It is concluded that the hexane extract of L. acidissima could be used in an integrated mosquito management program.

PHRP : Osong Public Health and Research Perspectives