Chemical composition and insecticidal effect of methanol extract of Capparis spinosa L. fruits on Tribolium confusum Jacquelin du Val, 1863 and Sitophilus oryzae (L., 1763) adults

Tribolium confusum and Sitophilus oryzae are stored product pests found worldwide. Environmental damages, human health issues the emergence of resistance driving scientists to seek alternatives synthetic insecticides for its control. Under this scenario, plant secondary metabolites being increasingly studied as bioinsecticides because they renewable, natural, biodegradable, non-persistent in environment safe non-target organism humans. In study, chemical composition lethal effects methanol extract Capparis spinosa fruits on adults were studied. The LC50 T. S. contact method 14.7 10.5 mg cm-2, respectively, whereas dip method, value determined 41.3 34.3 ml-1 oryzae, respectively. most important identified compounds thymol (22.5 %), methyl sulfonyl heptyl isothiocyanate (13.3 butyl (8.1 γ-terpinene (6.2%) iso propyl (5.8 %). results confirmed potential C. controlling stored-product insects.