01879nas a2200193   4500008004100000020001400041245015300055210006900208260001000277300001200287490000700299520114500306653002301451100002101474700001801495700001801513700001901531856013501550       2011                        eng d  a1672-960900aContact and fumigant toxicities of calamusenone isolated from Acorus gramineus rhizome against adults of Sitophilus zeamais and Rhizopertha dominica0 aContact and fumigant toxicities of calamusenone isolated from Ac  cApril  a181-1880 v183 aCalamusenone (3,8-dimethyl-5-(1-methylethylidene)-1,2,3,4,5,6,7,8-octahydroazulene-6- one, C15H22O) from Acorus gramineus Soland rhizome was tested in the laboratory for its insecticidal activities against adults of Sitophilus zeamais Motsch. and Rhizopertha dominica (Fab.), using dry film contact and fumigation methods. Responses varied with insect species, dosage and exposure time. In the dry film contact experiment, the highest insecticidal effects of calamusenone against S. zeamais and R. dominica adults were produced at 170.32 [mu]g/cm2 after treatment for 72 h, with 96.2% and 98.7% mortalities, respectively. The median lethal concentration (LC50) (72 h) values of calamusenone against S. zeamais and R. dominica adults were 67.00 [mu]g/cm2 and 77.30 [mu]g/cm2, respectively. As a potential fumigant, calamusenone showed moderate insecticidal effect on the adults of S. zeamais and R. dominica in fumigation experiment, with their LC50 (120 h) values of 125.71 [mu]L/L and 93.64 [mu]L/L respectively. Calamusenone isolated from A. gramineus rhizome showed promise as a novel pesticide candidate for stored-product pest control.10aSitophilus zeamais1 aHuang, Yan-Zhang1 aHua, Hong-Xia1 aLi, Shi-Guang1 aYang, Chang-Ju  uhttps://weevil.myspecies.info/contact-and-fumigant-toxicities-calamusenone-isolated-acorus-gramineus-rhizome-against-adults-sitoph