Abstract
American mink (Neovison vison) are an ecologically damaging invasive species in Europe and Iceland where attempts to control them typically rely on trapping. The focus and efficiency of trapping can be improved by using track-recording mink rafts to identify where mink are present before traps are deployed. This paper describes development of operating strategy for the use of mink rafts with traps, to optimise capture efficiency against costs. We worked sequentially on two unconnected chalk streams in central southern England. On 17 km of the River Itchen, we operated a very high density of rafts (5.9 per km) through spring and summer to generate multiple detections of each mink present. All rafts recording mink tracks were armed with traps, and captured mink were euthanased. After removal of mink until no further detections were made, we calculated that each mink was detected 5.3 times at 5.1 raft sites, and on this basis, rationalised raft density to a standard one per kilometer of river. We set a trap deployment time (10 days) that encompassed the longest observed lapse from detection to capture (7 days), and extended the check interval for rafts in monitoring mode from 1 week to 2 weeks to further reduce costs. These operating rules were then deployed for 12 months on the 44-km River Wylye beginning in autumn. Rafts indicated that the river was cleared of mink through the capture of seven individuals, each of which was detected 3.6 times at 2.7 raft sites, on average, and was trapped within 6 days of detection giving a response time of less than 20 days. Although these operating rules may need refinement for other environments, we believe this is a sound basis for effective mink control.
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References
Bonesi L, Palazon S (2007) The American mink in Europe: status, impacts, and control. Biol Cons 134:470–483
Bonesi L, Harrington LA, Maran T, Sidorovich VE, Macdonald DW (2006) Demography of three populations of American mink Mustela vison in Europe. Mamm Rev 36:98–106
Bonesi L, Rushton SP, Macdonald DW (2007) Trapping for mink control and water vole survival: identifying key criteria using a spatially explicit individual based model. Biol Cons 136:636–650
Dobbins CL (1991) Mink trapping techniques. C. L. Dobbins, P.O. Box 7082, Canton, Ohio, 44705, USA
Dunstone N (1993) The mink. Poyser T and AD, London
Harding AR (1906) Mink trapping. Harding AR Publishing Co, Columbus
Harrington LA, Harrington AL, Macdonald DW (2008) Estimating the relative abundance of American mink Mustela vison on lowland rivers: evaluation and comparison of two techniques. Eur J Wildl Res 54:79–87
Harrington LA, Harrington AL, Moorhouse T, Gelling M, Bonesi L, Macdonald DW (2009) American mink control on inland rivers in southern England: an experimental test of a model strategy. Biol Cons 142:839–849
Harrison SSC, Harris IT (2002) The effects of bankside management on chalk stream invertebrate communities. Freshw Biol 47:2233–2245
Jefferies DJ (2003) The water vole and mink survey of Britain 1996–1998 with a history of the long-term changes in the status of both species and their causes. The Vincent Wildlife Trust, Ledbury
Ladle M, Westlake DF (1995) River and stream ecosystems of Great Britain. In: Cushing CE, Cummins KW, Minshall GW (eds) River and stream ecosystems. Elsevier, New York, pp 343–388
Macdonald DW, Harrington LA (2003) The American mink: the triumph and tragedy of adaptation out of context. N Z J Zool 30:421–441
Macdonald DW, Strachan R (1999) The mink and the water vole: analyses for conservation. Wildlife Conservation Research Unit, Oxford University, UK
Melero Y, Palazón S, Revilla E, Martelo J, Gosàlbez J (2008) Space use and habitat preferences of the invasive American mink Mustela vison in a Mediterranean area. Eur J Wildl Res 54:609–617
Moore NP, Roy SS, Helyar A (2003) Mink Mustela vison eradication to protect ground-nesting birds in the Western Isles, Scotland, United Kingdom. N Z J Zool 30:443–452
Reynolds JC, Short MJ, Leigh RJ (2004) Development of population control strategies for mink Mustela vison, using floating rafts as monitors and trap sites. Biol Cons 120:533–543
Reynolds JC, Short MJ, Porteus TA, Rodgers B, Swan MC (2009) The GWCT mink raft. Game & Wildlife Conservation Trust, Hampshire, UK. http://www.gwct.org.uk/documents/gwct_mink_raft_guidelinedshr2009.pdf. Accessed 12 July 2010
Reynolds JC, Porteus TA, Richardson SM, Leigh RJ, Short MJ (2010) Detectability of American mink using rafts to solicit field signs in a population control context. J Wildl Manag 74:1601–1606
Strachan R, Jefferies DJ (1993) The water vole Arvicola terrestris in Britain 1989–1990: its distribution and changing status. The Vincent Wildlife Trust, Ledbury
Strachan R, Moorhouse T (2006) Water vole conservation handbook, 2nd edn. WildCRU, University of Oxford, UK
Taylor RH, Thomas BW (1989) Eradication of Norway rats (Rattus norvegicus) from Hawea Island, Fiordland, using Brodifacoum. N Z J Ecol l2:23–32
Taylor RH, Kaiser GW, Drever MC (2000) Eradication of Norway rats for recovery of seabird habitat on Langara Island, British Columbia. Restor Ecol 8:151–160
Acknowledgements
Both projects were funded by the Environment Agency (EA) and the Game & Wildlife Conservation Trust (GWCT). We are grateful to A. Frake (EA), T. Sykes (EA), T. Wells (GWCT Fisheries Steering Committee), J. Glasspool (The Test and Itchen Association Ltd.), R. Strachan (EA and Oxford University), and many fishing clubs, landowners and river keepers, who encouraged us and allowed access to the two rivers; and to N. Fisher for help with fieldwork on the Itchen in summer 2003.
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Porteus, T., Short, M., Richardson, S. et al. Empirical development of strategy for the control of invasive American mink by trapping. Eur J Wildl Res 58, 403–413 (2012). https://doi.org/10.1007/s10344-011-0589-8
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DOI: https://doi.org/10.1007/s10344-011-0589-8