Autor(es): Munoz, Jazmin Adriana V; Staschenko, Elena; Ocampo, Clara Beatriz D

Resumo: The insecticidal activity of eight essential oils from plants was assessed on third stage larvae and adults of Aedes aegypti Rockefeller strain. The baseline susceptibility was determined through the WHO standardized methods for larval bioassays and bottles of adult CDC. Cananga odorata was found that presented the best larvicidal activity with a lethal concentration (LC sub( 50)) of 64.9 ppm and LC sub( 99) of 119.8 ppm, followed by Cymbopogon nardus, Lippia origanoides and Lippia alba with an LC sub( 50) of 106.3 ppm, 88.89 ppm and 110.1 ppm, and LC sub( 99) of 203.5 ppm, 205.9 ppm and 211.5 ppm, respectively. Oils with remarkable activity adulticide against A. aegypti were C. nardus with 707.1 ppm LC sub( 50) and LC sub( 99) of 1,018 ppm and L. origanoides with 648.3 ppm LC sub( 50) and LC sub( 99) of 1.054 ppm. In conclusion it was determined that under laboratory conditions, Ca. odorata is efficient as a larvicide. Additionally, C. nardus and L. origanoides are promising to control both larvae and adults of A. aegypti. The use of plant essential oils could be useful for controlling mosquito populations as A. aegypti, while constituting a favorable alternative to the environment.

Palavras-Chave: Lethal concentration; Larvae; Pest control; Strains; Environmental factors;Aquatic insects; Essential oils; Larvicides; Cananga odorata; Cymbopogon nardus; Aedes aegypti; Lippia; Lippia alba

Imprenta: Revista Colombiana de Entomologia, v. 40, n. 2, p. 198-202, 2014.

Descritores: Aedes aegypti - Larvicide

Data de publicação: 2014

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