title: Repellent and fumigant toxicity of essential oil from Thymus persicus against Tribolium castaneum and Callosobruchus maculatus.
abstract: Repellent and insecticidal activity of the essential oil extracted from Thymus persicus (Roniger ex Reach. F.) Jalas was evaluated against two stored-product beetles Tribolium castaneum (Herbst) and Callosobruchus maculatus (F.). Dry flowering aerial parts of the plant were subjected to hydro distillation using a modified Clevenger-type apparatus. The repellent and fumigant toxicity were tested against 1-7 days old adult beetles at 27 +/- 1 degrees C and 65 +/- 5% RH in dark condition. The repellency on C. maculatus and T. castaneum at highest concentration (2 microL/mL acetone) was 82.40% and 70.40% respectively. Fumigation bioassays showed that C. maculatus adults were significantly more susceptible (LC50 = 2.39 microL/L air) to the essential oil than T. castaneum adults (LC50 = 234.42 microL/L air). It could be concluded that T. persicus may have potential for applications in management of stored-product pests because of its safety, strong repellency and fumigant toxicity.
authors.affiliation: Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P.O. Box 14115-336, Tehran, Iran. moharami@modares.ac.ir
authors.forename: S
authors.initials: S
authors.lastname: Moharramipour
authors.forename: A
authors.initials: A
authors.lastname: Taghizadeh
authors.forename: M H
authors.initials: MH
authors.lastname: Meshkatalsadat
authors.forename: A A
authors.initials: AA
authors.lastname: Talebi
authors.forename: Y
authors.initials: Y
authors.lastname: Fathipour
mesh_terms: D000818:Animals; D001517:Coleoptera / Q000187:drug effects* / Q000472:pathogenicity; D004305:Dose-Response Relationship, Drug; D005433:Flour / Q000469:parasitology; D007302:Insect Repellents / Q000302:isolation & purification / Q000633:toxicity*; D009822:Oils, Volatile / Q000302:isolation & purification / Q000633:toxicity*; D035261:Plant Components, Aerial / Q000737:chemistry*; D046930:Thymus Plant / Q000737:chemistry*; D014231:Tribolium / Q000187:drug effects* / Q000472:pathogenicity; D014908:Triticum / Q000469:parasitology
chemical_list: D007302:Insect Repellents; D009822:Oils, Volatile