Biological Invasions

, Volume 13, Issue 12, pp 2817–2828 | Cite as

Localised control of an introduced predator: creating problems for the future?

  • Thomas W. Bodey
  • Stuart Bearhop
  • Robbie A. McDonald
Original Paper


Introduced mammalian predators have had significant impacts on many native prey species. Although control of such predators for conservation management is becoming increasingly commonplace, it is often undertaken at a relatively small scale in relation to the overall predator population. Processes such as immigration mean that it remains difficult to determine the effectiveness of control measures. We investigated the impacts of feral ferret Mustela furo removal on the entire feral ferret population on Rathlin Island, UK. Removal of ferrets prior to breeding led to a substantial increase in the post-dispersal population through the enhanced survival of juveniles. Despite increased numbers, overwinter survival remained high, potentially aided by the reduced territoriality shown by this feral species compared to wild carnivores. The response of this ferret population to control is a further illustration of the complex ecological processes and outcomes arising from the anthropogenic disruption of wildlife populations. It highlights how partial or localised management may prove ineffective, and at worst might exacerbate the problems that management was designed to avert.


Ferret Invasive species Mustela furo Mustelid Population dynamics Predator control Territoriality 



TWB was supported by a PhD studentship through the Quercus partnership between Northern Ireland Environment Agency & Queen’s University Belfast. We thank the residents and landowners of Rathlin for allowing access; Liam McFaul, Rosalind Kennerley, Jonathan Reeves, Oisin Sweeney, Rory Finlay, Marc Ruddock and David Tosh for assistance with fieldwork; and three anonymous reviewers for improving the manuscript. All fieldwork on animals was approved by the Queen’s University, Belfast ethics committee, and scientific procedures on animals were carried out under Home Office licence where appropriate.


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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Thomas W. Bodey
    • 1
    • 2
  • Stuart Bearhop
    • 2
  • Robbie A. McDonald
    • 3
  1. 1.Quercus, School of Biological Sciences, Queen’s UniversityBelfastUK
  2. 2.Centre for Ecology and ConservationSchool of Biosciences, University of Exeter, Cornwall CampusPenrynUK
  3. 3.Food and Environment Research AgencyYorkUK

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