Genetic variability in European black grouse (<Emphasis Type="Italic">Tetrao tetrix</Emphasis>) |
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Authors: | Jacob Höglund Jobs Karl Larsson Hugh A H Jansman Gernot Segelbacher |
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Institution: | 1.Population Biology, Department of Ecology and Evolution,Evolutionary Biology Centre, Uppsala University,Uppsala,Sweden;2.Alterra,Wageningen,The Netherlands;3.Max Planck Institute for Ornithology,Vogelwarte Radolfzell,Germany;4.Department of Wildlife Ecology and Management,University Freiburg,Freiburg,Germany |
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Abstract: | We studied microsatellite genetic variation in 14 different geographic populations of black grouse (Tetrao tetrix) across the European range. Populations were grouped in three different fragmentation categories: isolated, contiguous and
continuous, respectively. Genetic diversity, measured as observed heterozygosity (H
O), expected heterozygosity (H
E) and allelic richness, were lower in isolated populations as compared to the other two categories that did not differ amongst
one another. These results imply that lowered genetic variability in black grouse populations is negatively affected by population
isolation. Our results suggest that the connectivity of small and isolated populations in Western Europe should be improved
or else these face an increased risk of extinction due to genetic and demographic stochasticity. |
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Keywords: | Microsatellite Genetic variation Fragmentation Isolation Population size |
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