Autor(es): Phasomkusolsil, Siriporn; Soonwera, Mayura

Resumo: The larvicidal and pupacidal effects of eight herbal essential oils were tested against third instar (L(3)), fourth instar (L(4)), and pupal stages of Culex quinquefasciatus and Anopheles minimus Probit analysis was used to analyze the data The larval mortality was recorded at 1, 5, 10, 30, and 60 minutes, and 24 hours Pupal mortality was also recorded at 24 hours intervals for 96 hours when completed mortality was achieved Citronella grass oil #2 (Cymbopogon nardus) proved to have the greatest toxicity against 3(rd) instar Cx quinquefasciatus and An minimus with LT(50) at 1 2 and <0 2 minute, respectively It exhibited a high level of effectiveness against 4(th) instar Cx quinquefasciatus (LT(50) at 5 1 minutes) and An minimus (LT(50) at 0 9 minute) Regarding pupacidal activity, Cx quinquefasciatus and An minimus pupae were susceptible to Lemon grass oil (LT(50) at 1 2 hours) and Citronella grass oil #1 (LT(50) at 0 6 hour), respectively These oils had larvicidal and pupacidal activities with 100% mortality against L(3), L(4) and pupal stage Cx quinquefasciatus at 10 minutes, 30 minutes and 24 hours They also caused 100% mortality of An minimus at 5 minutes (L(3) L(4)), and 24 hours (pupal stage)

Palavras-Chave: Essential oil; Larvicide; Pupacide; Anopheles minimus; Culex quinquefasciatus

Imprenta: Southeast Asian Journal of Tropical Medicine and Public Health , v. 41, n. 6, p. 1342-1351, 2010

Descritores: Aedes aegypti - Larvicide

Data de publicação: 2010

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