The straight and narrow path: the evolution of straight-line dispersal at a cane toad invasion front.

@article{Brown2014TheSA,
  title={The straight and narrow path: the evolution of straight-line dispersal at a cane toad invasion front.},
  author={Gregory P Brown and Ben L Phillips and Richard Shine},
  journal={Proceedings. Biological sciences},
  year={2014},
  volume={281 1795}
}
At the edge of a biological invasion, evolutionary processes (spatial sorting, natural selection) often drive increases in dispersal. Although numerous traits influence an individual's displacement (e.g. speed, stamina), one of the most important is path straightness. A straight (i.e. highly correlated) path strongly enhances overall dispersal rate relative to time and energetic cost. Thus, we predict that, if path straightness has a genetic basis, organisms in the invasion vanguard will… CONTINUE READING

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