Larvicidal, ovicidal, and oviposition-deterrent activities of four plant extracts against three mosquito species

Prathibha, K. P. and Raghavendra, B. S. and Vijayan, V. A. (2014) Larvicidal, ovicidal, and oviposition-deterrent activities of four plant extracts against three mosquito species. Environmental Science and Pollution Research, 21 (10). pp. 6736-6743. ISSN 1614-7499

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Abstract

In mosquito control programs, insecticides of botanical origin have the potential to eliminate eggs, larvae, and adults. So, the larvicidal, ovicidal, and oviposition-deterrent activities of petroleum ether and ethyl acetate extracts of the leaves of Eugenia jambolana, Solidago canadensis, Euodia ridleyi, and Spilanthes mauritiana were assayed against the three vector mosquito species, namely Anopheles stephensi, Aedes aegypti, and Culex quinquefasciatus. The larval bioassay was conducted following the World Health Organization method. The maximum larval mortality was found with ethyl acetate extract of S. mauritiana against the larvae of A. stephensi, A. aegypti, and C. quinquefasciatus with LC 50 values of 11.51, 28.1, 14.10 ppm, respectively. The mean percent hatchability of the ovicidal activity was observed at 48-h post-treatment. The percent hatchability was found to be inversely proportional to the concentration of the extract and directly proportional to the number of eggs. The flower head extract of S. mauritiana gave 100 % mortality followed by E. ridleyi, S. canadensis, and E. jambolana against the eggs of the three mosquito vectors. For oviposition-deterrent effect, out of the five concentrations tested (20, 40, 60, 80, and 100 ppm), the concentration of 100 ppm showed a significant egg laying-deterrent capacity. The oviposition activity index value of E. jambolana, E. ridleyi, S. canadensis, and S. mauritiana against A. aegypti, A. stephensi, C. quinquefasciatus at 100 ppm were -0.71, -0.71, -0.90, -0.93, -0.85, -0.91, -1, -1, -0.71, -0.85, -1, and -1, respectively. These results suggest that the leaf/flower extracts of certain local plants have the potential to be developed as possible eco-friendly means for the control of mosquitoes.

Item Type:	Article
Uncontrolled Keywords:	animal, Animals, toxicity, female, Female, procedures, mortality, plant extract, plant leaf, bioassay, Plant Extracts, concentration (composition), Plant Leaves, drug effects, larva, Larva, insecticide, Insecticides, pest control, egg laying, oviposition, acetate, Aedes, Aedes aegypti, Anopheles, Anopheles stephensi, Culex, Culex pipiens quinquefasciatus, Culicidae, disease vector, Euodia, mosquito, Mosquito Control, Oviposition, plant community, Solidago, Solidago canadensis, Spilanthes, Syzygium cumini
Subjects:	B Life Science > Zoology
Divisions:	Department of > Zoology
Depositing User:	Arshiya Kousar Library Assistant
Date Deposited:	22 Aug 2019 09:34
Last Modified:	22 Aug 2019 09:34
URI:	http://eprints.uni-mysore.ac.in/id/eprint/4387

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