Differential larvicidal efficacy of four species of Vitex against Culex quinquefasciatus larvae
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The early fourth instar larvae of Culex quinquefasciatus, reared in the laboratory were used for larvicidal assay with leaf extracts of Vitex negundo, Vitex trifolia, Vitex peduncularis and Vitex altissima. The methanol extracts of the four species possessed varying levels of larvicidal nature. The highest larvicidal activity was found with the extract of V. trifolia (LC50 = 41.41 ppm) followed by V. peduncularis (LC50 = 76.28 ppm), V. altissima (LC50 = 128.04 ppm) and V. negundo (LC50 = 212.57 ppm).
KeywordsLeaf Extract Lymphatic Filariasis Larvicidal Activity Filariasis Mosquito Repellent
The authors grateful to Dr. R. Panneerselvam, Professor and Head, Department of Botany for having provided the laboratory facility for this study.
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