Disruptive sexual selection in Colias eurytheme butterflies.

  title={Disruptive sexual selection in Colias eurytheme butterflies.},
  author={Thomas Wilson Sappington and Orley R. Taylor},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={87 16},
Sexual selection on male pheromone composition in Colias eurytheme (Pieridae) butterflies has the remarkable effect of increasing the variability of this trait. Sexual selection on important traits is generally thought to have a strong stabilizing effect on intraspecific variation of those characters. In this species, however, the male courtship pheromone is highly variable in the relative proportions of its three chemical constituents. Stabilization and/or canalization of this polygenic… CONTINUE READING


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