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Sex pheromone chemistry of the western spruce budwormChoristoneura occidentalis Free

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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 andZ11–14∶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.

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Authors and Affiliations

  1. Chemistry Department, Research and Productivity Council, P.O. Box 6000, E3 B 5H1, Fredericton, New Brunswick, Canada

    P. J. Silk, C. J. Wiesner, S. H. Tan & R. J. Ross

  2. Forest Pest Management Institute, P.O. Box 490, P6 A 5M7, Sault Ste. Marie, Ontario, Canada

    G. G. Grant

Authors
  1. P. J. Silk
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  2. C. J. Wiesner
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  3. S. H. Tan
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  4. R. J. Ross
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  5. G. G. Grant
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Lepidoptera: Tortricidae.

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Silk, P.J., Wiesner, C.J., Tan, S.H. et al. Sex pheromone chemistry of the western spruce budwormChoristoneura occidentalis Free. J Chem Ecol 8, 351–362 (1982). https://doi.org/10.1007/BF00987783

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  • DOI: https://doi.org/10.1007/BF00987783

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