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Genetic variability in European black grouse (Tetrao tetrix)
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Population Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Population Biology.
2007 (English)In: Conservation Genetics, ISSN 1566-0621, E-ISSN 1572-9737, Vol. 8, no 1, 239-243 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2007. Vol. 8, no 1, 239-243 p.
Keyword [en]
Microsatellite, Genetic variation, Fragmentation, Isolation, Population size
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-93558DOI: 10.1007/s10592-006-9158-1ISI: 000243187100021OAI: oai:DiVA.org:uu-93558DiVA: diva2:167076
Available from: 2005-09-23 Created: 2005-09-23 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Population Fragmentation and Genetic Variation in Grouse
Open this publication in new window or tab >>Population Fragmentation and Genetic Variation in Grouse
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis the genetic variation of two grouse species, the Chinese grouse (Bonasa sewersowi) and the Black grouse (Tetrao tetrix) was examined with neutral genetic markers: microsatellites. Habitat fragmentation and isolation leads to structuring among and loss of genetic variation within populations.

The Chinese grouse in a small population in Lianhuasan nature reserve was found to have undergone a population bottleneck and as a result of isolation and possible inbreeding showed genetic impoverishment hereof.

The Black grouse populations in Europe face various different conditions from widely distributed areas of suitable habitat in the northern and eastern parts of its range to highly naturally and anthropogenically fragmented habitat landscapes in the west.

Structure among populations was found in Great Britain where Wales, Scotland and England showed characteristics of three different genetic entities, indicating very little or no geneflow between these populations.

The Dutch population showed signs of loss of genetic variation as to be expected from a population that has historically decreased in population size from several thousands to tens of individuals in a matter of decades. However the possibility to spot signs of a bottleneck was impaired due to the short time-window in which this can be observed in a population with such a low effective population size (NE).

The sampled populations in Europe clustered into five different groups of genetic identities. The different clusters were: Great Britain-, the Netherlands-, Fenno-Scandian-, Alpine- and lowland German-Austrian populations. The level of genetic variation when compared over all these different populations decreased as a sign of isolation and small NE. However it was not feasible to separate the impact of these two factors.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2005. 37 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 98
Keyword
Biology, Bonasa sewerzowi, bottleneck, genetic drift, genetic variation, inbreeding, isolation, microsatellites, population structure, Tetrao tetrix, Biologi
National Category
Biological Sciences
Identifiers
urn:nbn:se:uu:diva-6006 (URN)91-554-6360-6 (ISBN)
Public defence
2005-10-21, Friessalen, Norbyvägen 14, Uppsala, 10:00
Opponent
Supervisors
Available from: 2005-09-23 Created: 2005-09-23Bibliographically approved

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