The Spots of the Spotted Salamander Are Sexually Dimorphic

  title={The Spots of the Spotted Salamander Are Sexually Dimorphic},
  author={Samantha K. Morgan and M. Worth Pugh and Michael M. Gangloff and Lynn M. Siefferman},
  pages={251 - 256}
Brilliant and conspicuous coloration in animals is often thought to signal quality to conspecifics (sexual selection) or to signal unpalatability to predators (aposematic selection). Ambystoma maculatum (spotted salamanders) have bilateral rows of conspicuous bright yellow dorsal spots against dark skin. Although this coloration has been long thought a classic example of warning coloration, to date, there are no quantitative measures of spot coloration. We captured adult male and female A… 

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