title: Mosquito larvicidal activity of botanical-based mosquito repellents.
abstract: The larvicidal activity of 4 plant essential oils--innamon oil, lemon eucalyptus oil, sandalwood oil, and turmeric oil--previously reported as insect repellents was evaluated in the laboratory against 4th instars of Aedes albopictus, Ae. aegypti, and Culex pipiens. Sandalwood oil appeared to be the most effective of the larvicides, killing larvae of all 3 mosquito species in relatively short times. The values of LT50 and LT90 at the application dosage (0.2 mg/ml) were 1.06 +/- 0.11 and 3.24 +/- 0.14 h for Ae. aegypti, 1.82 +/- 0.06 and 3.33 +/- 0.48 h for Ae. albopictus, and 1.55 +/- 0.07 and 3.91 +/- 0.44 h for Cx. pipiens, respectively. Chemical compositions of these essential oils were also studied, and the lavicidal activity of their major ingredient compounds was compared with that of each of the essential oils. The acute toxicity of the 4 essential oils to fathead minnows was also evaluated. The safe use of these natural plant essential oils in future applications of mosquito control was discussed.
authors.affiliation: Department of Entomology, Iowa State University, Ames, IA 50011, USA.
authors.forename: Junwei
authors.initials: J
authors.lastname: Zhu
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Zeng
authors.forename: Megan
authors.initials: M
authors.lastname: O'Neal
authors.forename: Gretchen
authors.initials: G
authors.lastname: Schultz
authors.forename: Brad
authors.initials: B
authors.lastname: Tucker
authors.forename: Joel
authors.initials: J
authors.lastname: Coats
authors.forename: Lyric
authors.initials: L
authors.lastname: Bartholomay
authors.forename: Rui-De
authors.initials: RD
authors.lastname: Xue
mesh_terms: D000818:Animals; D009033:Culicidae / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D007302:Insect Repellents / Q000494:pharmacology*; D007306:Insecticides / Q000494:pharmacology*; D007814:Larva / Q000187:drug effects; D010938:Plant Oils / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D007302:Insect Repellents; D007306:Insecticides; D010938:Plant Oils