Sex pheromone chemistry of the western spruce budwormChoristoneura occidentalis Free |
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| Authors: | P. J. Silk C. J. Wiesner S. H. Tan R. J. Ross G. G. Grant |
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| Affiliation: | (1) Chemistry Department, Research and Productivity Council, P.O. Box 6000, E3 B 5H1 Fredericton, New Brunswick, Canada;(2) Forest Pest Management Institute, P.O. Box 490, P6 A 5M7 Sault Ste. Marie, Ontario, Canada |
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| 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 andZ11–14Ac,E andZ11–14OH and 14Ald, 14Ac, and 14OH. The average aldehyde: acetate: alcohol ratio found by analysis of single glands by virgin females (nondiapausing strain) was 170.73. Analysis of virgin female effluvia gave this ratio as 1038 (diapausing strain: %Z=8, 11, 15, respectively) and 1036 (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 toE11–14Ald,E11–14Ac andE11–14OH were made. Correlations with both laboratory and field data previously published were also made betweenC. fumiferana andC. occidentalis.Lepidoptera: Tortricidae. |
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| Keywords: | Choristoneura occidentalis western spruce budworm Lepidoptera Tortricidae pheromone chemistry Choristoneura fumiferana capillary GC-MS (E/Z)-11-tetradecenal |
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