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Nature 409, 675-677 (8 February 2001) | doi:10.1038/35055648

Open Innovation Challenges

Evolution: Infectious speciation

Michael J. Wade

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The bacterium Wolbachia has strange and wonderful effects on reproduction in its many invertebrate host species. In effect, the creation of new species can now be added to the list.

For a new species to arise, a single population must somehow be split into two reproductively isolated populations that cannot interbreed. Such reproductive isolation usually stems from genetic incompatibility.