Skip to Main Content
Population ecology of insect invasions and their managementAuthor(s): Andrew M. Liebhold; Patrick C. Tobin
Source: Annual Review of Entomology. 53: 387-408.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
PDF: Download Publication (321.2 KB)
DescriptionDuring the establishment phase of a biological invasion, population dynamics are strongly influenced by Allee effects and stochastic dynamics, both of which may lead to extinction of low-density populations. Allee effects refer to a decline in population growth rate with a decline in abundance and can arise from various mechanisms. Strategies to eradicate newly established populations should focus on either enhancing Allee effects or suppressing populations below Allee thresholds, such that extinction proceeds without further intervention. The spread phase of invasions results from the coupling of population growth with dispersal. Reaction-diffusion is the simplest form of spread, resulting in continuous expansion and asymptotically constant radial rates of spread. However, spread of most nonindigenous insects is characterized by occasional long-distance dispersal, which results in the formation of isolated colonies that grow, coalesce, and greatly increase spread. Allee effects also affect spread, generally in a negative fashion. Efforts to slow, stop, or reverse spread should incorporate the spread dynamics unique to the target species.
- 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, firstname.lastname@example.org 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.
CitationLiebhold, Andrew M.; Tobin, Patrick C. 2008. Population ecology of insect invasions and their management. Annual Review of Entomology. 53: 387?408.
KeywordsAllee effect, establishment, nonindigenous species, spread, stratified dispersal
- Exploiting the Achilles heels of pest invasions: allee effects, stratified dispersal and management of forest insect establishment and spread
- Dispersal polymorphism in an invasive forest pest affects its ability to establish
- Population processes during establishment and spread of invading species: implications for survey and detection programs
XML: View XML