Are we analyzing speciation without prejudice?

  title={Are we analyzing speciation without prejudice?},
  author={Kerstin Johannesson},
  journal={Annals of the New York Academy of Sciences},
  • K. Johannesson
  • Published 1 September 2010
  • Biology
  • Annals of the New York Academy of Sciences
Physical isolation has long been the null hypothesis of speciation, with exceptional evidence required to suggest speciation with gene flow. Following recent persuasive theoretical support and strong empirical examples of nonallopatric speciation, one might expect a changed view. However, a review of 73 recent empirical studies shows that when allopatric speciation is suggested, a nonallopatric alternative is rarely considered, whereas the opposite is true in studies suggesting sympatric… 


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    Proceedings of the National Academy of Sciences
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Learning about Modes of Speciation by Computational Approaches

A simulation study to assess the reliability of inferences about modes of speciation from the existing computational approaches alone finds that when one of many assumptions of the isolation—migration model is violated, the methods tend to yield biased estimates of the parameters, potentially lending spurious support for allopatric or parapatric divergence.