Efficacy of herbal essential oils as insecticide against Aedes aegypti (Linn.), Culex quinquefasciatus (Say) and Anopheles dirus (Peyton and Harrison)
Autor(es): Phasomkusolsil, S.; Soonwera, M.
Resumo: The essential oils of Cananga odorata (ylang ylang), Citrus sinensis (orange), Cymbopogon citratus (lemongrass), Cymbopogon nardus (citronella grass), Eucalyptus citriodora (eucalyptus), Ocimum basilicum (sweet basil) and Syzygium aromaticum (clove), were tested for their insecticide activity against Aedes aegypti, Culex quinquefasciatus and Anopheles dirus using the WHO standard susceptibility test. These were applied in soybean oil at dose of 1%, 5% and 10% (w/v). C. citratus had the KT sub(50) values against the three mosquito species tested but the knockdown rates (at 10, 30 and 60 minutes) were lower than some essential oils. C. citratus oil had high insecticidal activity against Ae. aegypti, Cx. quinquefasciatus and An. dirus, with LC sub(50) values of <0.1, 2.22 and <0.1%, respectively. Ten percent C. citratus gave the highest mortality rates (100%) 24 hours after application. This study demonstrates the potential for the essential oil of C. citratus to be used as an insecticide against 3 species of mosquitoes.
Palavras-Chave: Insecticides; Pest control; Toxicity tests; Mortality causes; Public health; Essential oils; Culex quinquefasciatus; Cananga odorata; Cymbopogon nardus; Aedes aegypti; Syzygium aromaticum; Anopheles dirus; Ocimum basilicum; Eucalyptus; Cymbopogon citratus
Imprenta: Southeast Asian Journal of Tropical Medicine & Public Health, v. 42, n. 5, p. 1083-1092, 2011.
Descritores: Aedes aegypti - Public health
Data de publicação: 2011
