Mitochondrial DNA diversity of the Irish otter, Lutra lutra, population
The European otter, Lutra lutra, is protected under national and international legislation due to widespread population declines across its distributional range in recent decades. Mitochondrial DNA surveys to date have revealed low diversity within the European population. In this study we examined the mitochondrial DNA diversity of the Irish population to determine the relationships between Irish and other European populations. Diversity within the Irish population was high (h = 0.75) and nine haplotypes were present, five of which were novel. This high diversity might be attributed to a combination of a number of colonisation events, and the comparatively stable demographic history of the Irish population in comparison with the rest of Europe. The haplotype network showed no clear divergence between Irish and other European populations, and possible colonisation routes of Ireland are discussed.
KeywordsmtDNA Postglacial colonisation Conservation units Otter Ireland
The authors would like to thank J. Rochford for help with this study. We are grateful to all those who provided samples for the cadaver survey, notably M. Bailey, F. Marnell, D. McDonagh, P. Sleeman, P. Smiddy, D. Buckley and P. Stuart. P. Stafford, A. Boyce, M. Linnie, F. Marnell, P. Murphy, S. Miller and G. Little provided technical support and help with genetic analysis. The cadaver collection was carried out as part of PhD research by L Ó Néill funded by IRCSET. Genetic analysis was funded by the Zoology Dept, TCD and the Irish National Parks and Wildlife Service.
- Bailey M, Rochford J (2006) Otter Survey of Ireland 2004/2005. Irish Wildlife Manuals 23. National Parks and Wildlife Service, Department of the Environment, Heritage and Local Government. Dublin, IrelandGoogle Scholar
- Chapman PJ, Chapman LL (1982) Otter survey of Ireland—Suirbhé dobharchú na hÉireann 1980–1981. Vincent Wildlife Trust, LondonGoogle Scholar
- Habitats Directive EU (1992) Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild flora and fauna. Off J L 206:7Google Scholar
- Lunnon RM, Reynolds JD (1991) Distribution of the otter (Lutra lutra) in Ireland and its value as an indicator of habitat quality. In: Jeffrey DW, Madden B (eds) Bioindicators and environmental management. Academic Press, London, pp 435–443Google Scholar
- Schneider S, Roessli D, Excoffier L (2000) ARLEQUIN ver 3.01: a software for population genetic data analysis. Genetics and Biometry Laboratory, University of Geneva, SwitzerlandGoogle Scholar
- Water Framework Directive EU (2000) Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy. Off J L 327:1–73Google Scholar
- Whilde A (1993) Irish Red data Book 2: Vertebrates. HMSO, BelfastGoogle Scholar
- Wingfield RTR (1995) A model of sea-levels in the Irish and Cletic seas during the end-Pleistocene to Holocene transition. In: Preece RC (ed) Island Britain: a quaternary perspective. Geological Society Special Publication 96, London, pp 209–242Google Scholar