title: Sex pheromone of the european sunflower moth,Homoeosoma nebulellum (Den. & Schiff.) (Lepidoptera: Pyralidae).
abstract: Four components, (Z)-9-tetradecenal (8.6%), (Z,E)-9,12-tetradecadienal (4.8%), (Z)-11-hexadecenal (49.5%), and (Z)-13-octadecenal (37.1%), were identified in extracts of female pheromone glands of the European sunflower moth,Homoeosoma nebulellum (Lepidoptera: Pyralidae) using GC and GC-MS analyses. EAG and single-cell recordings of male antennal receptors gave strong evidence for (Z,E)-9,12-tetradecadienal as the antennal key compound of sex pheromone detection in this species. This result was confirmed by field trapping; removal of (Z,E)-9,12-tetradecadienal from quaternary blends completely suppressed the male catches. The synthetic blends with this compound as a major component caught five times less males than the blends reproducing the ratio found in the female extracts [5% of (Z,E)-9,12-tetradecadienal only]. The occurrence of a minor component perceived as the most biologically relevant compound is discussed.
authors.affiliation: INRA Laboratoire des Médiateurs Chimiques Domaine de Brouessy, 78114, Magny-les-Hameaux, France.
authors.forename: P
authors.initials: P
authors.lastname: Zagatti
authors.forename: M
authors.initials: M
authors.lastname: Renou
authors.forename: C
authors.initials: C
authors.lastname: Malosse
authors.forename: B
authors.initials: B
authors.lastname: Frérot
authors.forename: C
authors.initials: C
authors.lastname: Pavis
authors.forename: M
authors.initials: M
authors.lastname: Lettere
authors.forename: C
authors.initials: C
authors.lastname: Descoins
authors.forename: A
authors.initials: A
authors.lastname: Permana
authors.forename: Y
authors.initials: Y
authors.lastname: Pivot
authors.forename: F
authors.initials: F
authors.lastname: Leclant