title: Sex pheromone chemistry of the western spruce budwormChoristoneura occidentalis Free.
abstract: SCOT capillary Chromatographic and SCOT capillary chromatographic-mass spectrometic analyses of gland washes and effluvia of virgin femaleChoristoneura occidentalis Free, have been conducted with both a diapausing and nondiapausing strain of this insect. The following compounds were identified in gland washes and effluvia in both strains:E andZ11-14∶Ald,E andZ11-14∶Ac,E andZ11-14∶OH and 14∶Ald, 14∶Ac, and 14∶OH. The average aldehyde: acetate: alcohol ratio found by analysis of single glands by virgin females (nondiapausing strain) was 1∶7∶0.73. Analysis of virgin female effluvia gave this ratio as 10∶3∶8 (diapausing strain: %Z=8, 11, 15, respectively) and 10∶3∶6 (nondiapausing strain: %Z=8, 11, 12, respectively). The saturated components were generally 1-2% of theE isomer in each case. Comparisons of EAG responses of bothC. occidentalis andC. fumiferana toE11-14∶Ald,E11-14∶Ac andE11-14∶OH were made. Correlations with both laboratory and field data previously published were also made betweenC. fumiferana andC. occidentalis.
authors.affiliation: Chemistry Department, Research and Productivity Council, P.O. Box 6000, E3 B 5H1, Fredericton, New Brunswick, Canada.
authors.forename: P J
authors.initials: PJ
authors.lastname: Silk
authors.forename: C J
authors.initials: CJ
authors.lastname: Wiesner
authors.forename: S H
authors.initials: SH
authors.lastname: Tan
authors.forename: R J
authors.initials: RJ
authors.lastname: Ross
authors.forename: G G
authors.initials: GG
authors.lastname: Grant