Larvicidal Activity of Selected Xerophytic Plants Against Culex pipiens and Aedes caspius (Diptera: Culicidae)
نویسندگان
چکیده
Methanol extracts of different plants namely, Trichodesma africanum (Boraginaceae), Cleome rupicola (Capparceae) and Ochradenus baccatus (Resedaceae), were tested for larvicidal activity against 4 instar larvae of Aedes caspius and Culex pipiens mosquitoes. All plant extracts tested against Ae. caspius showed 100% mortality at 10μg/ml except the stem of O. baccatus which showed 90% mortality. However, most of the plant extracts tested against Cx. pipiens showed more than 50% mortality at 10μg/ml. Ae. caspius reported lower LD50 than Cx. pipiens. The LD50 of the extracts tested ranged between 5.3-0.99. The lowest LD50 calculated against Ae. caspius was 1.2±0.06 and 0.99±0.16 μg/ml for the stem of T. africanum and C. rupicola, respectively. In conclusion, we have documented promising larvicidal potential of xerophytic plants, which could be considered as a potentially alternative source for developing novel larvicides to be used in controlling vectors of mosquito-borne diseases.
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