01481naa a2200241 a 450000100080000000500110000800800410001910000190006024501700007926000090024952007210025865300150097965300180099465300260101265300170103870000190105570000190107470000170109370000230111070000190113370000210115277300660117311245272015-10-26       2015    bl uuuu     u00u1 u    #d1 aRIBEIRO, L. P.  aPimenta pseudocaryophyllus DerivativesbExtraction Methods and Bioactivity Against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae).h[electronic resource]  c2015  aPlant-based insecticides can play an important role in integrated insect pest management (IPM), especially in protecting stored grains. The aim of this study was to evaluate the bioactivity of derivatives (powder, ethanolic extract, and essential oil (EO)) from the leaves of Pimenta pseudocaryophyllus (Myrtaceae), a Brazilian native species, against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), the main insect pest of stored corn. The powder and essential oil prepared from leaves showed a repellent effect. Moreover, the EO exhibited promising insecticidal activity through residual contact (LC50=1522 mg kg−1) and significantly decreased the F1 progeny and the percentage of damaged grains.  aChavibetol  aessential oil  ainsecticidal activity  amaize weevil1 aANSANTE, T. F.1 aNICULAU, E. S.1 aPAVARINI, R.1 aSILVA, M. F. G. F.1 aSEFFRIN, R. C.1 aVENDRAMIM, J. D.  tNeotropical Entomology, Piracicabagv. 44, n. , p. 1-9, 2015.