Comparison of a-pinene and myrcene on attraction of mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Scolytidae) to pheromones in stands of western white pine
Abstract
Multiple-funnel traps baited with exo-brevicomin and a mixture of cis- and trans- verbenol were used to test the relative attractiveness of myrcene and (-)-a-pinene to the mountain pine beetle, Dendroctonus ponderosae Hopkins, in a stand of western white pine, Pinus monticola Dougl. Traps baited with myrcene caught significantly more D. ponderosae than traps baited with (-)-a-pinene, irrespective of the presence of exobrevicomin. exo-Brev icom in was attractive to Thanasimus undatulus (Say) (Coleoptera: Cleridae) whereas Trypodendron lineatum (Olivier) (Coleoptera: Scolytidae) was attracted to (-)-a-pinene. Our results support the use of myrcene in commercial trap lures and tree baits for D. ponderosae in stands of western white pine in British Columbia.
Key words: Scolytidae; Dendroctonus ponderosae; kairomones; Pinus monticola; Trypodendron lineatum; Cleridae; Thanasimus undatulus
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