title: Pheromonal basis for aggregation behavior of parasitoids of the gypsy moth:Brachymeria intermedia (Nees) andBrachymeria lasus (Walker) (Hymenoptera: Chalcididae).
abstract: The parasitoidsB. intermedia andB. lasus aggregate at sites previously frequented. Extracts from filter paper conditioned by aggregated parasitoids were chromatographed (adsorption column and gas-liquid chromatography) and bioassayed. An active component that elicited aggregation response forB. intermedia was isolated and identified as 3-hexanone. This molecule was found in trace quantities (5-10 ng/female or male) on filter paper conditioned by either male, female or a combination of the sexes.
authors.affiliation: , .
authors.forename: M A
authors.initials: MA
authors.lastname: Mohamed
authors.forename: H C
authors.initials: HC
authors.lastname: Coppel