Bioefficacy of botanical insecticides against the dengue and chikungunya vector Aedes aegypti (L.) (Diptera: Culicidae)
Autor(es): Tennyson, Samuel; Ravindran, K. John; Arivoli, S.
Resumo: To determine the bioefficacy of plant extracts viz., whole plants of Sohaeranthus indict's (Asteraceae) and Citrullus colocynthis (Cucurbilaceae), leaves of Abutilon indicum (Malvaceae), Cleislanthus collinus (Euphorbiaceae), Leucas aspera (Lamiaceae) and Murraya koenigii (Rutaccae), and aerial parts of Hyptis suaveolens (Lamiaceae) against the dengue and chikungunya vector Aedes aegypti. Methods: The larvicidal activity was determined against the early third instar larvae at concentrations of 250, 500, 750 and moo ppm. Larval mortality was assessed after 24 h. Results: The ethyl acetate extract of Sphaerardhus indicus (201.11ppm) and hexane extract of indicum indicant (261.31ppm) was found to be effective. Conclusions: Further indicus-depth investigations on the crude extract/phytotoxic compounds of Sphaeranthus indicus are needed to elucidate the larvicidal activity against a wide range of all stages of mosquito species and also the active ingredients of the extract responsible for larvicidal activity in Aedes aegypti should be identified, and small scale field trials are needed for usage of this plant as a mosquitocidal agent.
Imprenta: Asian Pacific Journal of Tropical Biomedicine, v. 2, n. Suppl. 3, p. S1842-S1844, 2012
Identificador do objeto digital: 10.1016/S2221-1691(12)60505-X
Descritores: Aedes aegypti - Chikungunya Fever
Data de publicação: 2012