Autor(es): Abu Bakar, A.; Sulaiman, S.; Omar, B.; Ali, R. Mat

Resumo: Background: Melaleuca cajuputi essential oil in aerosol spray was evaluated against the dengue vectors Aedes aegypti and Ae. albopictus at low cost housing flats in Section 10, Setapak, Kuala Lumpur, Malaysia.Methods: Essential oil in aerosol viz: 5% and 10% of concentrations were sprayed for 5 seconds each towards hung mosquitoes in 5 cylindrical net cages. Aerosol weights were recorded before and after spraying to determine discharge rates. Knockdown and mortality number were observed and compared to MS standard aerosol which contain 0.07% prallethrin and 0.05% d-phenothrin as positive control and aerosol contain 40% kerosene and 60% LPG was used as negative control.Results: High knockdown and mortality was observed in both species of mosquitoes towards MS standard aerosol. There was a significant difference (P<0.05) of mortality and knockdown between 5% and 10% of essential oil aerosol and 5% and 10% essential oil between MS standard. For 5% essential oil, mean percentage (%) of knockdown and mortality of Ac. aegypti displayed slightly higher compared to Ae. albopictus. Spraying with 5% M cajuputi essential oil aerosol indicated a knockdown of Ae. aegypti 5.60 +/- 1.18 and mortality of 22.90 +/- 4.22 while Ae. albopictus showed 4.60 +/- 0.89 knockdown and 20.00 +/- 2.85 mortality. The 10% essential oil concentration gave 23.60 +/- 1.68 knockdown and 48.05 +/- 0.37 mortality for Ae. aegypti. Ac. albopictus gave 23.00 +/- 3.16 knockdown and 44.20 +/- 2.10 mortality respectively.Conclusions: Extracts of essential oils does possessed an adulticidal effects and could be considered and utilized for future dengue vectors control.

Palavras-Chave: Melaleuca cajuputi; Essentials oil; Aerosol can; Aedes aegypti; Aedes albopictus

Imprenta: Journal of Arthropod - Borne Diseases, v. 6, n. 1, p. 28-35, 2012

Descritores: Aedes aegypti - Dengue ; Aedes aegypti - Public health

Data de publicação: 2012

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