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Genetic diversity and introgression in the Scottish wildcat
M Beaumont1, E M Barratt, D Gottelli
1Institute of Zoology, Zoological Society of London, Regents Park, London NW 1RY, UK. m.a.beaumont@reading.ac.uk
Molecular Ecology
|April 12, 2001
Summary
Genetic analysis of wild-living cats in Scotland reveals distinct populations. While some wildcats show recent domestic ancestry, others possess ancient gene pools, indicating minimal recent introgression from domestic cats.
Area of Science:
- Genetics
- Zoology
- Conservation Biology
Background:
- Wild-living cats in Scotland represent a unique population with potential genetic links to domestic cats.
- Understanding their genetic diversity is crucial for conservation efforts and taxonomic clarity.
Purpose of the Study:
- To genetically analyze wild-living cats in Scotland using microsatellite loci.
- To investigate the genetic relationship between wild-living cats, domestic cats, and morphological classifications.
- To determine the extent of recent domestic ancestry in Scottish wildcats.
Main Methods:
- Microsatellite genotyping of 230 wild-living Scottish cats and 74 domestic cats.
- Morphological classification based on pelage characteristics into five categories.
- Analysis of genetic distances, allele frequencies, and genetic mixture.
Main Results:
- Genetic distances were more strongly correlated with pelage characteristics than geographical proximity.
- Ordination revealed two main genetic groups of wild-living cats, with one group closely resembling domestic cats.
- A significant portion of the wildcat group showed genetic profiles suggesting a lack of very recent domestic ancestry, though earlier introgression is likely.
Conclusions:
- Pelage characteristics are a strong indicator of genetic differentiation in Scottish wild-living cats.
- The genetic data supports the existence of distinct wildcat populations, some with minimal recent domestic introgression.
- Evidence suggests a complex genetic history involving both ancient wildcat lineages and historical domestic cat gene flow.
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