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European Journal of Wildlife Research

, Volume 59, Issue 1, pp 93–104 | Cite as

Restoration programmes and the development of a natural diet: a case study of captive-bred European mink

  • Madis PõdraEmail author
  • Tiit Maran
  • Vadim E. Sidorovich
  • Paul J. Johnson
  • David W. Macdonald
Original Paper

Abstract

As part of a conservation initiative, we released captive-bred individuals of European mink (Mustela lutreola) onto a Baltic island ‘sanctuary’, Hiiumaa (Estonia), and investigated the development of their diet in the wild. Fifty-four animals out of the 172 released were equipped with radio collars and tracked in 2000–2003 intensively after release. Based on the analysis of the contents of 564 collected scats, we monitored how the diet of released individuals changed after release and how this was affected by habitat and by season. Diet changed as they adapted to the wild: some prey consumed immediately after release were later substituted with prey more typical of wild European mink elsewhere. The mink’s tendency to take typical prey increased (crayfish, 3; fish, 1.5; and small mammals, 2 times), while the proportion of atypical prey decreased more than five times in 60 days after release. Once established in the wild, the composition of the diet and its variation between seasons, habitats or weather conditions were similar to that reported elsewhere for wild European mink. There is no indication therefore that the components of the diet provided in captivity persisted in the wild after the adaptation period. We suggest that the adaptation of released carnivores to natural prey merits more attention in reintroduction projects.

Keywords

Endangered species Reintroduction Prey consumption Hiiumaa Estonia 

Notes

Acknowledgments

The release operation in Hiiumaa was financially supported by the Darwin Initiative, EU LIFE Project No. LIFE2000NAT/EE/7081, Foundation LUTREOLA, Zoos Help Foundation, Bernhandine Foundation, Denver Zoological Society, Thoiry Zoological Park, GaiaPark, Helsinki Zoo and Zoological Society for Conservation of Species and Populations. The project was also supported by Tallinn Zoo, Rotterdam Zoo and Hiiumaa County Department of the Estonian Ministry of the Environment, State Nature Conservation Centre and Tallinn University. Valuable assistance in analysing the scats was received from I. Solovej and L. Kõlamets and in editing the manuscript from M. Maran. We are also grateful to both reviewers and editor for their useful comments and suggestions.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Madis Põdra
    • 1
    Email author
  • Tiit Maran
    • 1
    • 2
  • Vadim E. Sidorovich
    • 3
  • Paul J. Johnson
    • 4
  • David W. Macdonald
    • 4
  1. 1.Institute of Mathematics and Natural SciencesTallinn UniversityTallinnEstonia
  2. 2.Species Conservation LabTallinn Zoological GardensTallinnEstonia
  3. 3.Institute of ZoologyNational Academy of Sciences of BelarusMinskBelarus
  4. 4.Wildlife Conservation Research Unit, Department of ZoologyUniversity of OxfordTubneyUK

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