Pathogens can slow down or reverse invasion fronts of their hosts

Frank M. Hilker, Mark A. Lewis, Hiromi Seno, Michel Langlais, Horst Malchow

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Infectious diseases are often regarded as possible explanations for the sudden collapse of biological invasions. This phenomenon is characterized by a host species, which firstly can successfully establish in a non-native habitat, but then spontaneously disappears again. This study proposes a reaction-diffusion model consisting of a simple SI disease with vital dynamics of Allee effect type. By way of travelling wave analysis, conditions are derived under which the invasion of the host population is slowed down, stopped or reversed as a consequence of a subsequently introduced disease. Hence, pathogens can dramatically control the rate of spread of invasive species.

Original languageEnglish
Pages (from-to)817-832
Number of pages16
JournalBiological Invasions
Volume7
Issue number5
DOIs
Publication statusPublished - 2005 Sep 1
Externally publishedYes

Keywords

  • Allee effect
  • Epidemiology
  • Invasion
  • Pathogen
  • Reversal
  • SI model
  • Slow-down
  • Travelling wave

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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