Double cones are used for colour discrimination in the reef fish,Rhinecanthus aculeatus |
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| Authors: | Vincenzo Pignatelli Conor Champ Justin Marshall Misha Vorobyev |
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| Institution: | 1.Sensory Neurobiology Group, Queensland Brain Institute, University of Queensland, Brisbane 4072, Australia;2.Department of Optometry and Vision Science, University of Auckland, Auckland 1142, New Zealand |
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| Abstract: | Double cones (DCs) are the most common cone types in fish, reptiles and birds. It has been suggested that DCs are used for achromatic tasks such as luminance, motion and polarization vision. Here we show that a reef fish Rhinecanthus aculeatus can discriminate colours on the basis of the difference between the signals of individual members of DCs. This is the first direct evidence that individual members of DCs are used in colour vision as independent spectral channels. |
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| Keywords: | colour vision double cones fish |
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