NATURAL SELECTION IN POPULATIONS SUBJECT TO A MIGRATION LOAD

@inproceedings{Bolnick2007NATURALSI,
  title={NATURAL SELECTION IN POPULATIONS SUBJECT TO A MIGRATION LOAD},
  author={Daniel I. Bolnick and Patrik Nosil},
  booktitle={Evolution; international journal of organic evolution},
  year={2007}
}
  • D. Bolnick, P. Nosil
  • Published in
    Evolution; international…
    1 September 2007
  • Biology, Medicine
Abstract Migration tends to oppose the effects of divergent natural selection among populations. [...] Key Method We develop a simple two-island model of migration–selection balance that, although very general, also reflects the natural history of Timema cristinae walking-stick insects that inhabit two host plant species that favor different cryptic color patterns.Expand
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These findings demonstrate the joint effects of reinforcement, ecological adaptation and gene flow on progress towards speciation in the wild in Timema cristinae walking-stick insects. Expand
Evidence for asymmetric migration load in a pair of ecologically divergent stickleback populations
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High gene flow appears to constrain adaptive divergence in a pair of three-spine stickleback populations in adjoining but unequal-sized lake basins in British Columbia, and fish in the smaller lake basin are subject to persistent directional selection towards a more benthic phenotype, whereas the larger population exhibits no significant selection. Expand
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