Mosquito (Diptera: Culicidae) Repellency Field Tests of Essential Oils From Plants Traditionally Used in Laos
2012 (English)In: Journal of medical entomology, ISSN 0022-2585, Vol. 49, no 6, 1398-1404 p.Article in journal (Refereed) Published
Essential oils of Hyptis suaveolens (Lamiaceae), Croton roxburghii (Euphorbiaceae), and Litsea cubeba (Lauraceae) were tested in the field near Vientiane city, Lao PDR, on humans for repellent activity against mosquitoes. Landing mosquitoes were collected and later identied. The most abundant mosquitoes captured belonged to the genera Armigeres, Culex, and Aedes. All the plant oils tested at concentrations of 1.7 μg/cm 2, 3.3 μg/cm 2, and 6.3 μg/cm 2 were signicantly more mosquito repellent than the negative control. Croton oil was signicantly repellent against mosquitoes of the three genera at the highest (6.3 μg/cm 2) concentration tested. Litsea oil was signicantly repellent against Armigeres at all (1.7 μg/cm 2, 3.3 μg/cm 2, and 6.3 μg/cm 2) concentrations tested. Hyptis oil was signicantly repellent against Armigeres at 3.3μg/cm 2 and 6.3μg/cm 2 and against Culex at 1.7 μg/cm 2 and 6.3 μg/cm 2. The oils were analyzed for chemical content of volatiles, mainly terpenes. Main constituents were α-pinene, sabinene, and 1,8-cineol from oils of the green parts of H. suaveolens; α-pinene, α-pinene, and α-phellandrene from fresh bark of C. roxburghii; and α-pinene, α-phellandrene, sabinene, and 1,8-cineol from fresh fruits of L. cubeba.
Place, publisher, year, edition, pages
2012. Vol. 49, no 6, 1398-1404 p.
Croton roxburghii, essential oil, Hyptis suaveolens, Litsea cubeba, mosquito repellent
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:kth:diva-108043DOI: 10.1603/ME12025ISI: 000311303200025ScopusID: 2-s2.0-84869787799OAI: oai:DiVA.org:kth-108043DiVA: diva2:579414
QC 201212202012-12-202012-12-192013-01-08Bibliographically approved