title: Sex pheromone of orange wheat blossom midge, Sitodiplosis mosellana.
abstract: Pheromone extract of the female orange wheat blossom midge, Sitodiplosis mosellana (Géhin) (SM) (Diptera: Cecidomyiidae), was analyzed by coupled gas chromatographic-electroantennographic detection (GC-EAD) and GC-mass spectrometry (MS), employing fused silica columns coated with DB-5, DB-210, DB-23 or SP-1000. These analyses revealed a single, EAD-active candidate pheromone which was identified as 2,7-nonanediyl dibutyrate. In experiments in wheat fields in Saskatchewan, traps baited with (2S,7S)-2,7-nonanediyl dibutyrate attracted significant numbers of male SM. The presence of other stereoisomers did not adversely affect trap captures. Facile synthesis of stereoisomeric 2,7-nonanediyl dibutyrate will facilitate the development of pheromone-based monitoring or even control of SM populations.
authors.affiliation: Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada. gries@sfu.ca
authors.forename: R
authors.initials: R
authors.lastname: Gries
authors.forename: G
authors.initials: G
authors.lastname: Gries
authors.forename: G
authors.initials: G
authors.lastname: Khaskin
authors.forename: S
authors.initials: S
authors.lastname: King
authors.forename: O
authors.initials: O
authors.lastname: Olfert
authors.forename: L A
authors.initials: LA
authors.lastname: Kaminski
authors.forename: R
authors.initials: R
authors.lastname: Lamb
authors.forename: R
authors.initials: R
authors.lastname: Bennett
mesh_terms: D000818:Animals; D002087:Butyrates / Q000737:chemistry* / Q000302:isolation & purification; D002849:Chromatography, Gas; D004175:Diptera / Q000502:physiology*; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D008297:Male; D010572:Pest Control, Biological; D010675:Pheromones / Q000737:chemistry* / Q000302:isolation & purification; D012726:Sexual Behavior, Animal; D014908:Triticum / Q000469:parasitology*
chemical_list: C420083:2,7-nonanediyl dibutyrate; D002087:Butyrates; D010675:Pheromones