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Theoretical Ecology

, 2:53 | Cite as

Invading with biological weapons: the role of shared disease in ecological invasion

  • Sally S. Bell
  • Andrew White
  • Jonathan A. Sherratt
  • Mike Boots
Original paper

Abstract

Theory has been developed that examines the role of infectious disease in ecological invasions for particular natural systems. However, a general understanding of the role that shared disease may play in invasions is lacking. Here, we develop a strategic theoretical framework to determine the role of disease, in addition to competition, in ecological invasions and the expansion of species’ spatial range. We investigate the effect of different disease parameters on the replacement time of a native species by an alien invader. The outcome is critically dependent on the relative effects that the disease has on the two species and less dependent on the basic epidemiological characteristics of the interaction. This framework is also used to investigate the effect of disease on the spatial spread of the invader. Our results show an interesting phenomenon where a wave of disease spreads through the landscape ahead of the wave of replacement.

Keywords

Disease models Spatial Multi-species Ecological invasions Squirrelpox Travelling waves 

Notes

Acknowledgements

We are grateful for the helpful advice of the editorial board member Mark Lewis and two anonymous referees on the manuscript. Sally S Bell is supported by an Engineering and Physical Sciences Research Council studentship award.

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Sally S. Bell
    • 1
  • Andrew White
    • 1
  • Jonathan A. Sherratt
    • 1
  • Mike Boots
    • 2
  1. 1.Department of Mathematics and the Maxwell Institute for Mathematical SciencesHeriot-Watt UniversityEdinburghUK
  2. 2.Department of Animal and Plant SciencesUniversity of SheffieldSheffieldUK

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