Autor(es): Noosidum Atirach,Chareonviriyaphap Theeraphap,Chandrapatya Angsumarn

Resumo: This study was designed to compare the behavioral responses of Aedes aegypti to a single essential oil and to a mixture of two or three essential oils using an excito-repellency test chamber. Mixtures were prepared from essential oils extracted from Litsea cubeba (LC), Litsea salicifolia (LS), and Melaleuca leucadendron (ML). In general, the mixture of essential oils produced a much stronger escape response by Ae. aegypti, regardless of the test conditions. No significant difference in escape responses was seen when the mixture of oils was compared with a standard commercial product containing DEET. Greater contact irritancy was seen from mixed oils of LC and LS than with other mixed oils. Mixtures of LC and LS at 0.075% showed the highest synergistic action (65.5% escaped) compared to that with unmixed oil alone at the same concentration (LC/20% and LS=32.2%). In addition, mixtures of LC and LS at 0.075% demonstrated the highest non-contact repellency (62.7%) and showed a greater effect than the use of LC (20%) or LS (20.3%) alone. We conclude that mixtures of two essential oils show potential as active ingredients for mosquito repellents.

Palavras-Chave: Aedes aegypti; DEET; Excito-repellency; Litsea cubeba; Litsea salicifolia; Melaleuca leucadendron; Essential oils; Irritancy

Imprenta: Journal of Vector Ecology : Journal of the Society for Vector Ecology, v. 39, n. 2, p. 298-305, 2014

Identificador do objeto digital: 10.1111/jvec.12104

Descritores: Aedes aegypti - Repellent

Data de publicação: 2014

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