Evaluation of the repellent effects of Nepeta parnassica extract, essential oil, and its major nepetalactone metabolite against mosquitoes
Autor(es)Gkinis, G.; Michaelakis, A.; Koliopoulos, G.; Ioannou, E.; Tzakou, O.; Roussis, V.
ResumoThe dichloromethane-methanol extract, the essential oil obtained by hydrodistillation from Nepeta parnassica, and the isolated 4a alpha, 7 alpha, 7a beta-nepetalactone were evaluated for their repellent effect against the mosquitoes Aedes (Stegomyia) cretinus Edwards and Culex pipiens pipiens biotype molestus Forskal. The chemical analysis of N. parnassica essential oil, dominated by oxygenated monoterpenes (87 %), revealed 4a alpha, 7 alpha, 7a beta-nepetalactone (36.8 %), 1,8-cineole (25.5 %), and 4a alpha, 7 beta, 7a beta-nepetalactone (11.1 %) as the major constituents. The results of the insect bioassays showed that the essential oil and the dichloromethane-methanol extract of N. parnassica were very active against Aedes cretinus for up to 3 h and against Culex pipiens for up to 2 h post application. The isolated 4a alpha, 7 alpha, 7a beta-nepetalactone showed very high mosquito repellency for periods of at least 2 h against both species.
Palavras-ChaveAedes Aegypti; N,n-diethyl-3-methylbenzamide deet; Diptera-culicidae; Catnip oil; Components; Albopictus; N,n-diethyl-m-toluamide; Anopheles; Safety; Adult
ImprentaParasitology Research, v. 113, n. 3, p. 1127-1134, 2014
Identificador do Objeto Digital10.1007/s00436-013-3750-3
DescritoresAedes aegypti - Repellent
Data de Publicação:2014
