Evaluation of Larvicidal and Repellent Activity of Xanthium Strumarium (Asteraceae) Ethanol Extract agaist Mosquito Vectors.
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Date
2009-12
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Abstract
Ethanol extract of leaf and seed of Xanthium strumarium was investigated
for anti-mosquito potential, including larvicidal and repellent activities
against Anopheles culicifacies, Anopheles stephensi, Culex
quinquefasciatus and Aedes aegypti. The ethanol-extracted Xanthium
strumarium possessed larvicidal activity against fourth instar larvae of An.
culicifacies, An. stephensi Cx. quinquefasciatus and Ae. aegypti. The LD 50
and LD values of ethanol-extracted of leaf were 0.19, 0.8, 0.27, 0.27% and 90
1.3, 1.3, 1.0, 1.8% and seed were 0.15, 0.9, 0.25, 0.23 and 1.5, 1.4, 1.7, 1.9%
against An. culicifacies An. stephensi Cx. quinquefasciatus and Ae. aegypti
respectively. It showed 100% repellency against An. culicifacies, An.
stephensi and Culex quinquefasciatus in 0h 1h, 2h 4h and 1h 2h 6h, at 10%
concentration respectively. It also provided biting protection time of 0h,
1h, 2h, 4h, and 6h when applied at a concentration of 2.5, 5, and 10 %.
Against Deet- 2.5% An. culicifacies Giles species A 100% repellency in 1h,
2h, An. stephensi Liston 100% repellency in 2h, 4h, and Culex
quinquefasciatus Say have shown 100% repellency in 4h. Xanthium
strumarium, therefore, can be considered as a probable source of some
biologically active compounds used in the development of mosquito
control agents, particularly repellent and larvicidal products.
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Keywords
Xanthium strumarium, mosquito vectors, larvicidal, repellent, Deet
Citation
Singh S P, Raghavendra K, Dua V K. Evaluation of Larvicidal and Repellent Activity of Xanthium Strumarium (Asteraceae) Ethanol Extract agaist Mosquito Vectors. Journal of Communicable Diseases. 2009 Dec; 41(4): 263-269.