title: Repellent effects of the essential oil of Lavendula angustifolia against adults of Hyalomma marginatum rufipes.
abstract: The repellent effects of the essential oil of Lavendula angustifolia on adults of Hyalomma marginatum rufipes was studied at concentrations of 5, 10 and 20% v/v. A suitable tick climbing bioassay based on the questing behaviour of ticks was used to test for repellency. High percentage repellency (range 70-100) was shown at all concentrations of the essential oil of L. angustifolia, although at 5% v/v it only persisted for the first 40 minutes compared with 120 minutes at other concentrations (10 and 20% v/v). The repellent strength of L. angustifolia compared well (P > 0.05) with that of DEET (N,N-diethyl-m-toluamide), a commercial reference repellent, for the 2-hour period of the study.
authors.affiliation: Department of Biology, University of Limpopo, PO Box 139, Medunsa Campus, 0204 South Africa.
authors.forename: M N
authors.initials: MN
authors.lastname: Mkolo
authors.forename: S R
authors.initials: SR
authors.lastname: Magano
mesh_terms: D000818:Animals; D001681:Biological Assay / Q000662:veterinary; D004305:Dose-Response Relationship, Drug; D007299:Insect Bites and Stings / Q000517:prevention & control / Q000662:veterinary*; D007302:Insect Repellents / Q000494:pharmacology*; D027523:Lavandula / Q000737:chemistry*; D009822:Oils, Volatile / Q000494:pharmacology*; D013983:Tick Control / Q000379:methods; D017282:Tick-Borne Diseases / Q000517:prevention & control / Q000662:veterinary; D013987:Ticks / Q000187:drug effects; D013997:Time Factors
chemical_list: D007302:Insect Repellents; D009822:Oils, Volatile