Frontalin in the male mountain pine beetle |
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Authors: | Lee C. Ryker L. M. Libbey |
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Affiliation: | (1) Departments of Entomology, Oregon Slate University, 97331 Corvallis, Oregon;(2) Food Science & Technology, Oregon Slate University, 97331 Corvallis, Oregon |
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Abstract: | Frontalin andexo-brevicomin were identified by GC-MS in air drawn over maleDendroclonus ponderosae Hopk. (MPB) from Oregon that had joined females for 1–2 days in the bark of lodgepole and ponderosa pine logs. Unfed males releasedexo- andendo-brevicomin but not frontalin. These three compounds were not detected in either unfed or fed females. Arrestment of males bytrans-verbenol and terpenes in an olfactory walkway was reduced by the addition of racemic frontalin; production of attractant chirps also diminished. Racemic frontalin also strongly reduced the aggregation of MPB in lodgepole and ponderosa pine stands to sticky traps baited with the aggregation pheromonetrans-verbenol and host terpenes; however, the function of the natural enantiomer of frontalin in MPB is unknown.Research supported by NSF Grant PCN 79-21708. O.S.U. Agricultural Experiment Station Technical Paper No. 6219. |
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Keywords: | Coleoptera Scolytidae Dendroctonus ponderosae pheromone frontalin exo-brevicomin Pinns contorta Pinus ponderosa |
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