The diet of field volesMicrotus agrestis at low population density in upland Britain
- Philip Wheeler
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Studies on field volesMicrotus agrestis Linnaeus, 1758 in lowland grasslands have shown them to be unselective grazers. The diet of the field vole in upland Britain was investigated using feeding trials with four of the dominant British upland monocots,Molinia caerulea,Nardus stricta, Deschampsia flexuosa and Eriophorum vaginatum. The suitability of faecal analysis was assessed and then used to analyse the diet of wild voles from faecal samples. Percentages of plant species in the faeces were compared to percentages on the ground in sites dominated byMolinia caerulea, Eriophorum vaginatum,Nardus stricta andCalluna vulgaris. Significant preferences for the grassDeschampsia flexuosa were observed in feeding trials and in the wild while the sedgeEriophorum vaginatum was avoided in both. There was no clear preference forMolinia caerulea andNardus stricta. Preference for plant species was related to palatability and nutrient content. The low nutrient conditions in British uplands mean that voles that live in these environments must be selective feeders to maximise nutrient intake.
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- The diet of field volesMicrotus agrestis at low population density in upland Britain
Volume 50, Issue 4 , pp 483-492
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Microtus agrestis
- diet selection
- faecal analysis
- cafeteria tests
- Philip Wheeler (1)
- Author Affiliations
- 1. University of Manchester, School of Biological Sciences, Oxford Rd Manchester, M13 9PT, UK