Journal of Chemical Ecology

, Volume 13, Issue 6, pp 1455–1480 | Cite as

Monoterpene metabolism in female mountain pine beetles,Dendroctonus ponderosae Hopkins, attacking ponderosa pine

  • H. D. PierceJr.
  • J. E. Conn
  • A. C. Oehlschlager
  • J. H. Borden


Abdominal volatiles of female mountain pine beetles,Dendroctonus ponderosae Hopkins, fed in ponderosa pine,Pinus ponderosa Dougl. ex Laws, and in lodgepole pine,P. contorta var.latifolia Engelmann, were analyzed by gas chromatography and coupled gas chromatography-mass spectrometry and were found to comprise host oleoresin components and beetle-produced alliylic alcohols, aldehydes, and ketones derived from host monoterpenes. Neitherexo- andendo-brevicomin nor frontalin were detected. Three metabolic pathways are proposed to account for the distribution of beetle-produced monoterpene alcohols. The first pathway involves hydroxylation of monoterpene substrates on allylic methyl groups which areE to a methylene or vinyl group. This oxidation pathway is indiscriminate with respect to substrate and probably functions to detoxify monoterpenes. A second pathway, which hydroxylates theendo-cyclic methyleneE to a vinyl methyl group of bicyclic monoterpenes to give almost exclusively thetrans alcohol, is hypothesized to be involved in pheromone production. A third detoxification pathway involves anti-Markovnikov addition of water to theexo-cyclic double bond of β-phellandrene to give predominantlytrans-2-p-menthen-7-ol.

Key words

Dendroctonus ponderosae mountain pine beetle Coleoptera Scolytidae monoterpene metabolism monoterpene alcohols pheromones allylic hydroxylation anti-Markovnikov hydration Pinus ponderosa 


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Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • H. D. PierceJr.
    • 1
  • J. E. Conn
    • 2
  • A. C. Oehlschlager
    • 1
  • J. H. Borden
    • 2
  1. 1.Department of ChemistrySimon Fraser UniversityBurnabyCanada
  2. 2.Centre for Pest Management, Department of Biological SciencesSimon Fraser UniversityBurnabyCanada
  3. 3.Department of BotanyUniversity of TorontoTorontoCanada

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