The variable colours of the fiddler crab Uca vomeris and their relation to background and predation.

@article{Hemmi2006TheVC,
  title={The variable colours of the fiddler crab Uca vomeris and their relation to background and predation.},
  author={Jan M. Hemmi and Justin Marshall and Waltraud Pix and Misha Vorobyev and Jochen Zeil},
  journal={The Journal of experimental biology},
  year={2006},
  volume={209 Pt 20},
  pages={
          4140-53
        }
}
Colour changes in fiddler crabs have long been noted, but a functional interpretation is still lacking. Here we report that neighbouring populations of Uca vomeris in Australia exhibit different degrees of carapace colours, which range from dull mottled to brilliant blue and white. We determined the spectral characteristics of the mud substratum and of the carapace colours of U. vomeris and found that the mottled colours of crabs are cryptic against this background, while display colours… CONTINUE READING

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