title: First report of toxicity of Xylopiaparviflora (A. Rich.) Benth (Annonaceae) root bark's essential oil against cowpea seed bruchid, Callososbruchus maculatus Fabricius (Coleoptera: Chrysomelidae: Bruchinae).
abstract: The fumigant toxicity of Xylopia parviflora (A. Rich.) Benth (Annonaceae) root bark's essential oil (EO) against cowpea seed bruchid, Callosobruchus maculatus, was investigated in the laboratory. Dose had significant (P < 0.0001) effect on mortality at 6 hours after treatment (HAT) at a concentration of 6.25 μL/mL air which exerted 81.70% mortality, while there was no mortality in all other lower doses. At 12 HAT, 75.05% and 90.00% mortality were observed at doses of 3.15 and 6.25 μL/mL air, respectively. It was significantly (P < 0.05) higher than the mortality (50.58%) observed when 0.78 μL/mL air was applied. The lethal time for 50% of assayed adults (LT50) obtained when the bruchid was exposed to X. parviflora EO at a dose of 6.25 μL/mL air (2.71 h) was significantly lower than LT50 obtained at exposure of bruchid to other lower doses of 0.78-3.15 μL/mL air.
authors.affiliation: a Department of Crop and Environmental Protection, Ladoke Akintola University of Technology , P.M.B. 4000, Ogbomoso 210001 , Nigeria.
authors.forename: Samuel Adelani
authors.initials: SA
authors.lastname: Babarinde
authors.forename: Olufemi Olutoyin Richard
authors.initials: OO
authors.lastname: Pitan
authors.forename: Ganiyu Olatunji
authors.initials: GO
authors.lastname: Olatunde
authors.forename: Michael Oluwole
authors.initials: MO
authors.lastname: Ajala
mesh_terms: D000818:Animals; D029061:Annonaceae / Q000737:chemistry*; D001517:Coleoptera; D004535:Ehlers-Danlos Syndrome; D005651:Fumigation; D007306:Insecticides; D009822:Oils, Volatile / Q000494:pharmacology*; D018517:Plant Roots / Q000737:chemistry*
chemical_list: D007306:Insecticides; D009822:Oils, Volatile
keywords: Callosobruchus maculatus; LT50; Xylopia parviflora; essential oil; fumigant toxicity