Insecticidal activity of lantana camara L. essential oil against the stored wheat pest, tribolium castaneum (herbst) (coleoptera: Tenebrionidae)

This study was conducted to determine the insecticidal activity of Lantana camara (Verbenaceae) essential oil against adults of Tribolium castaneum. Chemical composition of essential oil isolated by hydrodistillation from the aerial part of L. camara was analyzed by GC-MS. IH-Cycloprop [E]-Azulene (19.23%), Methanophtalene (15.49%) and Caryophylleneoxide (11.77%) were the main constituents. The results indicate that essential oil of the aerial part of L. camara shows toxic effects against adults of T. castaneum. The LD₅₀ and LD₉₀ of the aerial part of L. camara against of T. castaneum adults was 89.83 and 193.37 |jl at 120 hours exposure. The maximum mortality caused by the extracted essential oil was 93.33% at 120 hours exposure at 200 jil. The LT₅₀ values were respectively 22.52 hours in dose 200 jil for T. castaneum adults.