Canadian Forest Service Publications

Invasive bark and wood-boring beetles in British Columbia, Canada. 2001. Humble, L.M. Pages 69-77 in R.I. Alfaro, K.R. Day, S.M. Salom, K.S.S Nair, H.F. Evans, A.M. Liebhold, F. Lieutier, M. Wagner, K. Futai, and K. Suzuki, editors. Protection of World Forests: Advances in Research, Proceedings: XXI IUFRO World Congress. August 7-12, 2001, Kuala Lumpur, Malaysia. IUFRO Secretariat, Vienna, IUFRO World Series Vol. 11. 253 p.

Year: 2001

Available from: Pacific Forestry Centre

Catalog ID: 19565

Language: English

CFS Availability: PDF (download)

Abstract

Ongoing studies of the introduction and establishment of invasive bark and wood-boring insects around the major Canadian port of Vancouver, British Columbia, have shown that five previously unrecognized non-indigenous species of Scolytidae, Trypodendron domesticum (L.), Xyleborus pfeili (Ratzeburg), Xyleborinus alni (Niisima), Xylosandrus germanus (Blandford) and Xyloterinus politus (Say), and one non-indigenous Cerambycidae, Phymatodes testaceus (L.), have established in the urban forests. Within urban forest sites, the recently discovered scolytid fauna, along with other previously introduced species, now comprise the largest component of survey trap captures at some locations. Only one of the recently introduced Scolytidae was restricted to a single location across the study area. Of the remainder, one exotic scolytid and one cerambycid were restricted to forest habitats within the urban landscape. However, three of the recent introductions have successfully invaded both urban forest habitats and adjacent managed forest lands. The biological and ecological impacts resulting from the establishment of these ambrosia beetles and woodborers remains to be determined. These introduced species are now a major component of the scolytid diversity in some forest systems and may impact the diversity of native plant and animal species. Studies are currently underway to determine the extent to which these species have invaded both managed and natural forest ecosystems.

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