Journal of Chemical Ecology (1999) 25, 805-816
Dezene P.W. Huber, R. Gries, J.H. Borden and H.D. Pierce (1999)
Two pheromones of coniferophagous bark beetles found in the bark of nonhost angiosperms
Journal of Chemical Ecology 25 (4), 805-816
Abstract: Volatiles from fresh bark of black cottonwood, Populus trichocarpa; trembling aspen, P. tremuloides; paper birch, Betula papyrifera; bigleaf maple, Acer macrophyllum; red alder, Alnus rubra; and Sitka alder, Alnus viridis, were collected on Porapak Q and subjected to coupled gas chromatographic-electroantennographic detection analyses by utilizing the antennae of several scolytid beetles (Dendroctonus pseudotsugae, D. rufipennis, D. ponderosae, Ips pini, and Dryocoetes confusus). Among the antennally active volatiles identified by coupled gas chromatographic-mass spectroscopic analysis were frontalin, 1,5-dimethyl-6,8-dioxabicyclo[3.2.1]-octane, in the two Alnus species and conophthorin, (E)-7-methyl-1,6-diox-aspiro[4.5]decane, in the other four species. Field trapping experiments demonstrated that conophthorin had a significant disruptant effect on the response to a pheromone-host kairomone blend by both Dendroctonus pseudotsugae and D. ponderosae. Our results, and the recent identification of other scolytid pheromones in various tree species, pose major questions regarding the evolution and ecological roles of these semiochemicals, including the possibility of Batesian mimicry by the beetles. They also suggest a need for comparative studies on the biosynthetic pathways for these compounds.
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Link to article at publishers website
Database assignments for author(s): Dezene P.W. Huber, John H. Borden
Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
environment - cropping system/rotation
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Ips pini | ||||
| Dendroctonus rufipennis | ||||
| Dendroctonus pseudotsugae | ||||
| Dendroctonus ponderosae | ||||
| Dryocoetes confusus |
