Title: Spatio-temporal analysis of Xyleborus glabratus (Coleoptera:
Circulionidae: Scolytinae) invasion in Eastern U.S. forests
Author: Koch, F. H.; Smith, W. D.
Date: 2008
Source: Environ. Entomol.: vol 37(2) pgs 442-452
Description: The non-native redbay ambrosia beetle, Xyleborus glabratus Eichhoff (Coleoptera: Curculionidae: Scolytinae), has recently emerged as a significant pest of southeastern u.s. coastal forests. Specifically, a fungal symbiont (Raffaelea sp.) of X. glabratus has caused mortality of redbay (Persea borbonia) and sassafras (Sassafras albidum) trees in the region; several other Lauraceae species also seem susceptible. Although the range of X. glabratus continues to expand rapidly little is known about the species' biology and behavior. In turn, there has been no broad-scale assessment of the threat it poses to eastern U.S. forests. To provide a basic information framework, we performed analyses exploiting relevant spatio-temporal data available for X. glabratus. First, we mapped the densities of red.bay and sassafras from forest inventory data. Second, we used climate matching to delineate potential geographic limits for X. glabratus. Third, we used county infestation data to estimate the rate of spread and modeled spread through time, incorporating host density as a weighting factor. Our results suggest that (1) key areas with high concentrations of redbay have yet to be invaded, but some are immediately threatened; (2) climatic conditions may serve to constrain X. glabratus to the southeastern U.S. coastal region; and (3) if unchecked, X. glabratus may spread throughout the range of redbay in <40 yr. Disruption of anthropogenic, long distance dispersal could reduce the likelihood of this outcome.
Keywords: Xyleborus glabratus, ambrosia beetle, redbay, climate matching, cost-weighted distance
View and Print this Publication ()
Pristine Version: An uncaptured or "pristine" version of this publication is available. It has not been subjected to OCR (Optical Character Recognition) and therefore does not have any errors in the text. However it is a larger file size and some people may experience long download times. The "pristine" version of this publication is available here:
View and Print the PRISTINE copy of this Publication ()
Publication Notes:
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility
Citation
Koch, F. H.; Smith, W. D. 2008. Spatio-temporal analysis of Xyleborus glabratus (Coleoptera:
Circulionidae: Scolytinae) invasion in Eastern U.S. forests. Environ. Entomol.: vol 37(2) pgs 442-452