Take me to your leader: Does early successional nonhost vegetation spatially inhibit pissodes strobi (coleoptera: curculionidae)?

Jordan M. Koopmans, Honey Marie C. De La Giroday, Staffan B. Lindgren, Brian H. Aukema

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The spatial influences of host and nonhost trees and shrubs on the colonization patterns of white pine weevil Pissodes strobi (Peck) were studied within a stand of planted interior hybrid spruce [Picea glauca (Moench) Voss X Picea engelmannii (Parry) ex Engelm.]. Planted spruce accounted for one third of all trees within the stand, whereas the remaining two thirds were comprised of early-successional nonhost vegetation, such as alder (Alnus spp.), paper birch (Betula papyrifera Marsh.), black cottonwood [Popuhis bahamifera ssp. trichocarpa (T. Ng.) Brayshaw], lodgepole pine [Pinuscontorta (Dougl.) ex Loud.], trembling aspen (Populustremuloides Michx), willow (Salixspp.), and Canadian buffaloberry [Sheplwrdia canadensis (L.) Nutt.]. Unlike the spruce trees, nonhost vegetation in the stand was not uniformly distributed. Spatial point process models showed that Canadian buffaloberry, paper birch, black cottonwoood, and trembling aspen had negative associations with damage caused by the weevil, even though the density of the insects' hosts in these areas did not change. Moreover, knowing the locations of these nonhost trees provided as much, or more, inference about the locations of weevil-attacked trees as knowing the locations of suitable or preferred host trees (i.e., those larger in size). Nonhost volatiles, the alteration of soil composition, and overstory shade are discussed as potential explanatory factors for the patterns observed. New research avenues are suggested to determine whether nonhost vegetation in early successional stands might be an additional tool in the management of these insects in commercially important forests.

Original languageEnglish (US)
Pages (from-to)1189-1196
Number of pages8
JournalEnvironmental entomology
Volume38
Issue number4
DOIs
StatePublished - Aug 1 2009

Keywords

  • Angiosperm volatiles
  • Engelmann spruce weevil
  • Nonhost volatiles
  • Plant-insect interactions
  • Spatial point processes

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