Sunday, 17 November 2002 - 8:00 AM
0122

This presentation is part of : Ten-Minute Papers, Section F. Crop Protection Entomology

Protection of lodgepole pine from attack by the mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Scolytidae) using high doses of verbenone and nonhost bark volatiles

John H. Borden1, Leslie J. Chong1, Tracy J. Earle2, and Dezene P. W. Huber3. (1) Simon Fraser University, Department of Biological Sciences, 8888 University Drive, Burnaby, BC, Canada, (2) Lignum Ltd, 180 Hodgson Road, Williams Lake, BC, Canada, (3) University of British Columbia, Department of Forest Science, 2424 Main Mall, Vancouver, BC, Canada

In 10 40 x 40 m control plots with a single, pheromone-baited lodgepole pine at the plot centre, 26.6% of 432 trees were mass-attacked by the mountain pine beetle, Dendroctonus ponderosae. In contrast, only 2.1% of 523 available trees were attacked in 10 experimental plots with a pheromone-baited tree surrounded by 16 stations on a 10 m grid at which verbenone released at a high dose plus a 7-component nonhost angiosperm bark volatile blend were deployed. Treatments with high dose verbenone alone, or low-dose verbenone with or without nonhost volatiles were less effective in deterring attack. This tactic is expensive, but could be used in the short-term protection of small stands of high economic, ecological or social value.

Species 1: Coleoptera Scolytidae Dendroctonus ponderosae (mountain pine beetle)
Species 2: Coniferales Pinaceae Pinus contorta var. latifolia (lodgepole pine)
Keywords: forest entomology, chemical ecology

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