Skip to Main Content
Anisotropic dispersal by the Asian longhorned beetle (Anoplophora glabripennis): quantifying spatial risk and eradication effort with limited biological dataAuthor(s): R. Talbot Trotter; Eugene Pepper; Kevin Davis; Ryan Vazquez
Source: Biological Invasions
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
View PDF (1.0 MB)
DescriptionOnce a breeding population of an invasive species has established in a novel environment, management efforts commonly focus on eradicating the species or limiting its spread. However, information describing the biology and behavior of an invading organism is often limited, highlighting the need to assess dispersal with incomplete information. Here we extend a previously described graph-theorydriven model of dispersal for the Asian longhorned beetle (Anoplophora glabripennis Motschulsky) to evaluate the impacts of three poorly documented biological and behavioral parameters on the spatial extent and distribution of dispersal risk in three breeding beetle populations under eradication in the United States. The parameters assessed include 1) whether beetles disperse from lightly/recently infested trees, 2) the presence and impact of anisotropic dispersal, and 3) the rate at which beetles emigrate from infested trees. The results suggest three key patterns. First, beetle behavior, i.e. dispersal from lightly infested trees, alters the dispersal kernel calculated for each of the infestations, though the effects of this parameter on the distribution of dispersal risk on the landscape is limited. Second, dispersal within each location was anisotropic (variable based on direction), and biases in dispersal direction varied among the three infestations. The incorporation of this anisotropy substantially altered the estimated distribution of risk within each landscape. Third, changes in the rate of beetle dispersal did not alter the perimeter of the landscape with dispersal risk but did alter the severity of risk within that perimeter. Higher rates of dispersal result in the need to mitigate larger portions of the landscape to achieve a given probability of eradication. These tools can aid in quantifying and comparing dispersal risk under varying assumptions of dispersal, and may help prioritize research on biological and behavioral parameters to facilitate management and eradication.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- 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.
CitationTrotter, R. Talbot, III; Pepper, Eugene; Davis, Kevin; Vazquez, Ryan. 2019. Anisotropic dispersal by the Asian longhorned beetle (Anoplophora glabripennis): quantifying spatial risk and eradication effort with limited biological data. Biological Invasions. 21(4): 1179-1195. https://doi.org/10.1007/s10530-018-1894-x.
KeywordsSpatial risk, Dispersal kernel, Insect dispersal, Graph theory, Eradication effort
- Description of an establishment event by the invasive Asian longhorned beetle (Anoplophora glabripennis) in a suburban landscape in the northeastern United States
- Quantifying Dispersal of the Asian longhorned beetle (Anoplophora glabripennis, Coleoptera) with incomplete data and behavioral knowledge
- Mapping the risk of sudden oak death in Oregon: prioritizing locations for early detection and eradication
XML: View XML