Divergent selection maintains adaptive differentiation despite high gene flow between sympatric rainbow smelt ecotypes (Osmerus mordax Mitchill)

@article{SaintLaurent2003DivergentSM,
  title={Divergent selection maintains adaptive differentiation despite high gene flow between sympatric rainbow smelt ecotypes (Osmerus mordax Mitchill)},
  author={Robert Saint-Laurent and Michel Legault and Louis Bernatchez},
  journal={Molecular Ecology},
  year={2003},
  volume={12}
}
In this study, we investigate the relative role of historical factors and evolutionary forces in promoting population differentiation in a new case of sympatric dwarf and normal ecotypes of the rainbow smelt (Osmerus mordax Mitchill) in Lac Saint‐Jean (Québec, Canada). Our first objective was to test the hypothesis that the evolution of sympatric smelt ecotypes in Lac Saint‐Jean has been contingent upon the secondary contact between two evolutionary lineages in postglacial times. Secondly, the… 
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