Going to great lengths: selection for long corolla tubes in an extremely specialized bat-flower mutualism.

  title={Going to great lengths: selection for long corolla tubes in an extremely specialized bat-flower mutualism.},
  author={Nathan Muchhala and James D. Thomson},
  journal={Proceedings. Biological sciences},
  volume={276 1665},
In a hypothesis that has remained controversial since its inception, Darwin suggested that long-tubed flowers and long-tongued pollinators evolved together in a coevolutionary race, with each selecting for increasing length in the other. Although the selective pressures that flowers impose on tongue length are relatively straightforward, in that longer tongues allow access to more nectar, selective pressures that pollinators impose on flower length are less clear. Here, we test for such… CONTINUE READING
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