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Did trichromacy evolve for frugivory or folivory?

Sumner, Petroc ORCID: and Mollon, J. D. 2003. Did trichromacy evolve for frugivory or folivory? Mollon, J. D., Pokorny, J. and Knoblauch, K., eds. Normal and Defective Colour Vision, Oxford: Oxford University Press, pp. 21-30. (10.1093/acprof:oso/9780198525301.003.0003)

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Two hypotheses have been proposed to explain the selective advantage of primate trichromacy. According to the frugivory hypothesis, the advantage lay in finding fruit amongst foliage. In contrast, the folivory hypothesis states that the advantage of trichromatic vision lay in the detection of reddish/brown colouration in the edible leaves of some tropical plants. This chapter considers evidence and arguments for the frugivory and folivory hypotheses. Spectroradiometric evidence is consistent with both the folivory and frugivory hypotheses, and tests of intraspecific differences in foraging success between dichromatic and trichromatic individuals are yet to be reported. Thus, there is at present no primary evidence that distinguishes between the two theories.

Item Type: Book Section
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher: Oxford University Press
ISBN: 9780198525301
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Last Modified: 20 Oct 2022 10:00

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