2025, Vol. 5, Issue 2, Part B
Larvicidal efficacy of four weed extracts against the filarial vector Culex quinquefasciatus Say (Diptera: culicidae) under laboratory conditions in, West Bengal, India
Author(s): Afrin Sultana and Sagata Mondal
Abstract: The growing need for sustainable mosquito control methods has led to increased interest in plant-derived larvicides. This study evaluated the larvicidal activity of extracts from four commonly found weed species—Mikania micrantha, Anisomeles indica, Senna tora, and Lantana camara—against Culex mosquito larvae. Plant materials were extracted using four different solvents: acetone, 70% ethanol, chloroform, and benzene. Larval mortality was observed after 24, 48, 72, and 96 hours of exposure at various concentrations (50, 100, 150, 200, 250, and 300 ppm). Among the tested plant species, Senna tora exhibited the most potent larvicidal effect, with LC₅₀ values of 51.32, 49.65, 66.00, and 42.94 ppm at the respective time intervals. The results emphasize the importance of solvent polarity in extracting bioactive compounds responsible for larvicidal effects. This research supports the potential of locally available aquatic weeds as environmentally friendly alternatives to synthetic insecticides in vector control programs.
Pages: 102-107 | Views: 82 | Downloads: 30
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How to cite this article:
Afrin Sultana, Sagata Mondal. Larvicidal efficacy of four weed extracts against the filarial vector Culex quinquefasciatus Say (Diptera: culicidae) under laboratory conditions in, West Bengal, India. Zool Entomol Lett 2025;5(2):102-107.
