Variations of colour vision in a New World primate can be explained by polymorphism of retinal photopigments

  title={Variations of colour vision in a New World primate can be explained by polymorphism of retinal photopigments},
  author={John D. Mollon and James K. Bowmaker and Gerald H. Jacobs},
  journal={Proceedings of the Royal Society of London. Series B. Biological Sciences},
  pages={373 - 399}
The squirrel monkey (Saimiri sciureus) exhibits a polymorphism of colour vision: some animals are dichromatic, some trichromatic, and within each of these classes there are subtypes that resemble the protan and deutan variants of human colour vision. For each of ten individual monkeys we have obtained (i) behavioural measurements of colour vision and (ii) microspectrophotometric measurements of retinal photopigments. The behavioural tests, carried out in Santa Barbara, included wavelength… 

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