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1

A 13-year population study of the edible dormouse Glis glis in Britain

100%
Morris P. A., Morris M. J.
Acta Theriologica
|
2010
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tom 55
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nr 3
279-288
Edible dormice Glis glis Linnaeus, 1766 were monitored from 1996–2008 inclusive. This has been the first population study of this non-native species since its introduction to Britain in 1902. Dormice were present in nest boxes from May or June until October or November. Numbers recorded varied greatly from year to year, and breeding failure occurred in 6 of the 13 years, apparently in response to environmental cues such as food availability. Litter sizes declined with growth of the young but some of the largest litters resulted from females aggregating their offspring. Males used more nest boxes than females, some of whom showed clear site fidelity from year to year. Survival rates were high and some individual lifespans exceeded 9 years. Longevity, compensating for periodic reproductive failure, and an extremely short active season, make the life history of edible dormice exceptional among small rodents, perhaps unique. Population density, rate of population increase and evidence for local emigration in non-breeding years are discussed, issues of particular significance in populations of recently-established introduced species such as this.
2

The use of dormouse Muscardinus avellanarius nest boxes by two species of Apodemus in Britain

100%
Marsh A. C. W., Morris P. A.
Acta Theriologica
|
2000
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tom 45
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nr 4
The occupancy of Muscardinus auellanarius (Linnaeus, 1758) nest boxes by Apo­demus flauicollis (Melchior, 1834) and A. sylvaticus (Linnaeus, 1758) was studied over a six-year period from five sites in southern Britain. A. flauicollis was a regular visitor to nest boxes, occupying them more frequently than A, sylvalicus or any other small mammal. Litters of A. flauicollis were uncommon in nest boxes suggesting these boxes were rarely used for breeding. It seems likely that nest boxes form temporary nesting places for individuals, pairs or small communal groups. A. flauicollis sometimes take over nest hoxes occupied by M. avellanarius, usually constructing their own nests and sometimes removing old nest material. M. avellanarius may avoid nest boxes occupied by A. flauicollis earlier in the same year. Boxes favoured by M. auellanarius in one year tended to be reselected by them in the following year, but no such trend was apparent in box selection by A. flauicollis. Overall, there was little evidence to suggest that the presence of A. flauicollis had a significant impact on M. avellanarius occupancy of nest boxes.
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