Sexual dimorphism and directional sexual selection on aposematic signals in a poison frog.

@article{Maan2009SexualDA,
  title={Sexual dimorphism and directional sexual selection on aposematic signals in a poison frog.},
  author={M E Maan and Molly Elizabeth Cummings},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2009},
  volume={106 45},
  pages={19072-7}
}
It is commonly assumed that natural selection imposed by predators is the prevailing force driving the evolution of aposematic traits. Here, we demonstrate that aposematic signals are shaped by sexual selection as well. We evaluated sexual selection for coloration brightness in populations of the poison frog Oophaga [Dendrobates] pumilio in Panama's Bocas del Toro archipelago. We assessed female preferences for brighter males by manipulating the perceived brightness of spectrally matched males… CONTINUE READING
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