Genetic Structure and Evolution of a Fire Ant Hybrid Zone.

  title={Genetic Structure and Evolution of a Fire Ant Hybrid Zone.},
  author={D. DeWayne Shoemaker and Kenneth G. Ross and Michael L. Arnold},
  journal={Evolution; international journal of organic evolution},
  volume={50 5},
Two introduced fire ants, Solenopsis invicta and S. richteri, hybridize over an extensive area in the United States spanning central Mississippi, Alabama, and western Georgia. We studied a portion of this hybrid zone in northwestern Mississippi in detail by sampling ants at many sites along two transects extending across the zone and examining gene frequency and size distributions at a large number of genetic and morphological markers. The distributional patterns at these markers are most… CONTINUE READING

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