Dendroctonus Ponderosae (Coleoptera: Scolytidae): Pre-Aggregation Landing and Gallery Initiation on Lodgepole Pine

Document Type

Article

Journal/Book Title/Conference

The Canadian Entomologist

Publication Date

1980

Issue

2

Volume

112

Publisher

Cambridge University Press

First Page

185

Last Page

191

Abstract

Landing rates as monitored by landing traps indicate that the mountain pine beetle, Dendroctonus ponderosaeHopkins, is not attracted to lodgepole pine, Pinus contorta Dougl., prior to the first gallery start. Bark terpene odors and DBH were not correlated with beetle landing rates, with the exception of beta-phellandrene which accounted for a statistically significant 18% of the variation in landing rates. Beetles were unable to distinguish between hosts, dead hosts and nonhosts during landing. The elderberry pith bioassay indicated the presence of a gallery initiation stimulant in the bark.

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