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Ecological and genetic spatial structuring in the Canadian lynx.
Eli Knispel Rueness1, Nils Chr Stenseth, Mark O'Donoghue
1Centre for Ecological and Evolutionary Synthesis, Department of Biology, University of Oslo, P.O. Box 1031 Blindern, N-0315 Oslo, Norway.
Nature
|September 5, 2003
Summary
Canadian lynx populations show distinct genetic structures mirroring their ecological patterns across North America. Geographical barriers like the Rocky Mountains and an unseen zone near Hudson Bay shape gene flow, influenced by ecological factors.
Area of Science:
- Ecology
- Population Genetics
- Zoology
Background:
- Canadian lynx exhibit regular population cycles with varying structures across Canada.
- Previous studies observed spatial ecological structuring in Canadian lynx populations.
Purpose of the Study:
- To investigate the relationship between the spatial ecological structuring and genetic structuring of Canadian lynx populations.
- To identify genetic barriers to gene flow in Canadian lynx.
Main Methods:
- Analysis of both nuclear and mitochondrial DNA markers.
- Comparison of genetic data with known ecological distribution and population dynamics.
Main Results:
- A strong resemblance was found between the spatial ecological and genetic structuring of Canadian lynx.
- The Rocky Mountains were confirmed as a barrier to gene flow in western Canada.
- A significant, geographically subtle barrier to gene flow was identified south of Hudson Bay, separating ecological regions.
Conclusions:
- Ecological factors play a crucial role in shaping the genetic structure of Canadian lynx populations.
- Geographical and ecologically defined regions act as barriers to gene flow, influencing genetic divergence.
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