Journal of Comparative Physiology A

, Volume 159, Issue 6, pp 859–868 | Cite as

Photoreceptors of a cyprinid fish, the roach: morphological and spectral characteristics

  • J. E. G. Downing
  • M. B. A. Djamgoz
  • J. K. Bowmaker


Structure-function studies were undertaken on cones in the retina of the cyprinid fish, the roach,Rutilus rutilus, in order to provide a basis for analysis of colour information by post-receptoral neurones. Measurements were made with two main aims: (i) To determine by microspectrophotometry the absorbance spectra of the photopigments present within the retina, and correlate these with the morphological types of photoreceptor; (ii) To characterize the morphologies of the photoreceptors at both light and electron microscopical levels and determine their relative abundance in the retina. In addition to red-, green-, and blue-sensitive cones, an ultra-violet-sensitive photoreceptor has been found in a sub-population of miniature short single cones. Possible relevance of this finding to vertebrate vision is discussed.


Colour Retina Relative Abundance Spectral Characteristic Morphological Type 
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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • J. E. G. Downing
    • 1
  • M. B. A. Djamgoz
    • 1
  • J. K. Bowmaker
    • 2
  1. 1.Department of Pure and Applied Biology, Imperial CollegeUniversity of LondonLondonUK
  2. 2.School of Biological Sciences, Queen Mary CollegeUniversity of LondonLondonUK

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