Comparison of the Insecticidal Characteristics of Commercially Available Plant Essential Oils Against Aedes aegypti and Anopheles gambiae (Diptera: Culicidae)

Journal of Medical Entomology
Edmund J NorrisJoel R Coats

Abstract

Aedes aegypti and Anopheles gambiae are two mosquito species that represent significant threats to global public health as vectors of Dengue virus and malaria parasites, respectively. Although mosquito populations have been effectively controlled through the use of synthetic insecticides, the emergence of widespread insecticide-resistance in wild mosquito populations is a strong motivation to explore new insecticidal chemistries. For these studies, Ae. aegypti and An. gambiae were treated with commercially available plant essential oils via topical application. The relative toxicity of each essential oil was determined, as measured by the 24-h LD(50) and percentage knockdown at 1 h, as compared with a variety of synthetic pyrethroids. For Ae. aegypti, the most toxic essential oil (patchouli oil) was ∼1,700-times less toxic than the least toxic synthetic pyrethroid, bifenthrin. For An. gambiae, the most toxic essential oil (patchouli oil) was ∼685-times less toxic than the least toxic synthetic pyrethroid. A wide variety of toxicities were observed among the essential oils screened. Also, plant essential oils were analyzed via gas chromatography/mass spectrometry (GC/MS) to identify the major components in each of the samples sc...Continue Reading

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Citations

Nov 2, 2016·Medical and Veterinary Entomology·A D GrossJ R Coats
Feb 2, 2017·International Journal of Environmental Research and Public Health·Edmund J Norris, Joel R Coats
Sep 25, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Olivier Gnankiné, Imaël Henri Nestor Bassolé
Jan 26, 2018·Journal of the American Mosquito Control Association·Yuan ShenChristopher S Bibbs
Aug 24, 2019·Journal of the American Mosquito Control Association·Edmund J NorrisJoel R Coats
May 18, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mariano CáceresAlejandro Lucia

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