title: Bioactivity of cedarwood oil and cedrol against arthropod pests.
abstract: Heartwood samples from Juniperus virginiana L. were extracted with liquid carbon dioxide, and the bioactivity of carbon dioxide-derived cedarwood oil (CWO) toward several species of ants and cedrol toward ticks was determined. Repellency was tested for ants, and toxicity was tested for ticks. Ants in an outdoor bioassay were significantly repelled by the presence of CWO on a pole leading to a sugar-water solution. Similarly, CWO was a significant repellent barrier to red imported fire ants and prevented them from finding a typical food source. Black-legged tick nymphs exhibited dosage-dependent mortality when exposed to cedrol and at the highest dosage (i.e., 6.3 mg/ml) tested, the cedrol killed 100% of the ticks. These repellency and toxicity results together demonstrate a clear potential for the use of CWO as a pest control agent.
authors.affiliation: Functional Foods Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 North University St., Peoria, IL 61604, USA.
authors.forename: F J
authors.initials: FJ
authors.lastname: Eller
authors.forename: R K
authors.initials: RK
authors.lastname: Vander Meer
authors.forename: R W
authors.initials: RW
authors.lastname: Behle
authors.forename: L B
authors.initials: LB
authors.lastname: Flor-Weiler
authors.forename: Debra E
authors.initials: DE
authors.lastname: Palmquist
mesh_terms: D056810:Acaricides; D000818:Animals; D001000:Ants; D004305:Dose-Response Relationship, Drug; D007300:Insect Control; D007302:Insect Repellents; D018884:Ixodes / Q000254:growth & development; D009758:Nymph; D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D013045:Species Specificity; D013729:Terpenes
chemical_list: D056810:Acaricides; D007302:Insect Repellents; D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D013729:Terpenes; C078669:cedrol; C042023:cedarwood oil