The extent of genetic structuring of a population results from a balance of forces producing local genetic differentiation, and counter-forces producing genetic homogeneity. An understanding of these forces is essential when investigating evolutionary processes in a species. It has been predicted that, when populations experience severe reductions in size, they lose genetic variability. Small population size may occur as a consequence of founder events, such as with the introduction and spread of a pest species. The predictions as described were examined by studying the molecular evolution and population genetics of European rabbit (Oryctolagus cuniculus (L)) populations in Australia, using variation in mitochondrial DNA control region sequences. The results suggest that there is a higher rate of gene flow within populations in semi arid/arid areas, which is attributable to the extreme environmental heterogeneity found in these areas and may be best explained by a process whereby local populations becoming extinct and are recolonised by individuals drawn from other populations. / Master of Science (Hons)
| Identifer | oai:union.ndltd.org:ADTP/189165 |
| Date | January 1996 |
| Creators | Zenger, Kyall Richard, University of Western Sydney, Faculty of Science and Technology, School of Science |
| Source Sets | Australiasian Digital Theses Program |
| Language | English |
| Detected Language | English |
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