title: Aggregation pheromone of the male granary weevil,Sitophilus granarius (L.).
abstract: Evidence for a male-produced aggregation pheromone inSitophilus granarius is reported. Hexane extracts of Tenax®-trapped volatiles from males held on wheat were attractive to both sexes in a multiple-choice olfactometer and pitfall bioassay chamber. A quantitative relationship existed between days of insect exposure on disks and degree of responsiveness. The maximum response was to 35 insect-day-equivalents. Diel-related activity showed both sexes responsive during photophase and nonresponsive during scotophase.
authors.affiliation: Stored Product and Household Insects Laboratory, ARS, USDA Department of Entomology, University of Wisconsin-Madison, 53706, Madison, Wisconsin.
authors.forename: D L
authors.initials: DL
authors.lastname: Faustini
authors.forename: W L
authors.initials: WL
authors.lastname: Giese
authors.forename: J K
authors.initials: JK
authors.lastname: Phillips
authors.forename: W E
authors.initials: WE
authors.lastname: Burkholder