Dengue is an important vector-borne infectious disease transmitted by Aedes aegypti in the tropics and subtropics. While synthetic chemicals have been used to control mosquitoes, an increase in their use in agricultural and public health domains has led to the development of insecticide resistance in mosquito populations. Hence, there is an increasing interest in biological insecticides as alternatives to synthetic insecticides, as part of insecticide resistance management strategies. The aim of the current study was to assess the bioactivity of essential oils from six (06) aromatic plants Cymbopogon giganteus, Cymbopogon nardus, Cymbopogon schoenanthus, Eucalyptus camaldulensis, Lippia multiflora, and Ocimum americanum against Ae. aegypti larvae and adults. Larvicidal and adulticidal bioassays were performed according to the World Health Organization (WHO) standard methods using field-collected Ae. aegypti from 1200 Logements and Tabtenga, two localities of Ouagadougou. The Rockefeller-susceptible strain was used as control. The essential oil of Lippia multiflora was the most toxic against Ae. aegypti larvae with 50% lethal concentration (LC₅₀) of 73.51 and 79.18 ppm for 1200 Logements and Tabtenga populations, respectively. This essential oil also had the most effective adulticidal activity against Ae. aegypti from both 1200 Logements (LC₅₀ = 0.47%) and Tabtenga (LC₅₀ = 0.51%). The essential oil of O. canum was less toxic against the larvae and adults of Ae. aegypti, whereas the essential oils of other plants tested had intermediate activity against either the larvae or adults. No significant difference in susceptibility was observed between field mosquitoes and the Rockefeller-susceptible strain based on insecticide resistance ratios. The results suggest that all the tested essential oils exhibited toxicity against larvae and adults of Ae. aegypti and can therefore be used as biological and ecofriendly insecticides for dengue vector control. However, field evaluations of formulations and further research on the essential oils for potential toxicology toward non-target organisms are necessary.

登革热是埃及伊蚊在热带和亚热带传播的一种重要的媒介传播传染病。虽然合成化学品已被用于控制蚊子，但它们在农业和公共卫生领域的使用增加已导致蚊子种群对杀虫剂的抗药性的发展。因此，作为杀虫剂抗性管理策略的一部分，生物杀虫剂作为合成杀虫剂的替代品越来越受到关注。本研究的目的是评估来自六 (06) 种芳香植物Cymbopogon giganteus、Cymbopogon nardus、Cymbopogon schoenanthus、Eucalyptus camaldulensis、Lippia multiflora和Ocimum americanum对抗Ae。埃及伊蚊幼虫和成虫。杀幼虫和杀成虫生物测定根据世界卫生组织 (WHO) 标准方法使用现场收集的Ae 进行。伊蚊从1200个Logements和Tabtenga，瓦加杜古的两个地点。洛克菲勒敏感菌株用作对照。Lippia multiflora的精油对Ae 的毒性最强。对于 1200 个 Logements 和 Tabtenga 种群，埃及伊蚊幼虫的 50% 致死浓度 (LC ₅₀ ) 分别为 73.51 和 79.18 ppm。这种精油还对Ae具有最有效的杀成虫活性。埃及来自 1200 Logements (LC ₅₀  = 0.47%) 和 Tabtenga (LC ₅₀  = 0.51%)。O. canum精油对Ae的幼虫和成虫的毒性较小。aegypti，而其他测试植物的精油对幼虫或成虫具有中等活性。基于杀虫剂抗性比率，在野外蚊子和洛克菲勒易感品系之间没有观察到易感性的显着差异。结果表明，所有测试的精油都对Ae 的幼虫和成虫表现出毒性。埃及因此可用作登革热病媒控制的生物和生态友好型杀虫剂。然而，必须对配方进行现场评估，并进一步研究精油对非目标生物的潜在毒理学。