PRELIMINARY NOTE ON A LEUCOCYTOZOON FOUND IN THE BLOOD OF THE RED GROUSE (LAGOPUS SCOTICUS).
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Vegetation Analysis of the Territorial Boundary between Red Grouse (lagopus Lagopus Scoticus) and Ptarmigan (lagopus Mutus)
The location of the boundary between the territories of red grouse (Lagopus lagopus scoticus) and ptarmigan (Lagopus mutus) is related to the vegetation of the hills where both these species occur. If the vegetation is dominated by tall, vigorous Calluna vulgaris, grouse occur. At greater altitudes where Calluna is shorter and less vigorous, significant levels of Empetrum hermaphroditum and Vac...
متن کاملTerritorial status and survival in red grouse Lagopus lagopus scoticus : hope for the doomed surplus?
A previous study of survival in territorial and non-territorial red grouse Lagopus lagopus scoticus conducted between 1957 and 1967 found that territorial status in the autumn pre-determined over-winter survival. A very high proportion of territorial birds survived and virtually all non-territorial birds died or emigrated. We tested the hypothesis that over-winter survival was dependent on terr...
متن کاملThe digestion of heather (Calluna vulgaris) by red grouse (Lagopus lagopus scoticus).
I. In the wild, red grouse live largely on heather, a high-fibre (25 :(,), low-protein (7 %) food. Digestibility trials were carried out under semi-natural conditions, with magnesium as a digestibility marker. T w o trials w-ere done, one in autumn and one in spring. 2. Digestibility of the dry matter varied from 21 to 30 ”/o and metabolizable energy from 1.1 to 1.6 kcal/g. Thcse variations wer...
متن کاملLocal genetic structure in red grouse (Lagopus lagopus scoticus): evidence from microsatellite DNA markers.
Allelic variation at seven hypervariable tri- and tetranucleotide microsatellite loci was used to determine levels of population differentiation between 14 populations of red grouse (Lagopus lagopus scoticus) in northeast Scotland, UK. Despite the potential for long-distance dispersal in grouse, and a semicontinuous habitat, significant population divergence was observed (mean RST = 0.153; P < ...
متن کاملTerritorial behaviour and population dynamics in red grouse Lagopus lagopus scoticus . I . Population experiments
FRANÇOIS MOUGEOT*, STEVE M. REDPATH*, ROBERT MOSS*, JASON MATTHIOPOULOS† and PETER J. HUDSON‡ * Centre for Ecology and Hydrology, Hill of Brathens, Banchory AB31 4BW, Scotland, UK; † NERC Sea Mammal Research Unit, Gatty Marine Laboratory, University of St Andrews, St Andrews, Fife KY16 8LB, Scotland, UK; ‡ Biology Department, Mueller Laboratory, Penn State University, PA 16802, USA; § Departmen...
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ژورنال
عنوان ژورنال: The Lancet
سال: 1907
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(00)50065-8