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Science 4 May 1979:
Vol. 204. no. 4392, pp. 523 - 526
DOI: 10.1126/science.432658
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Articles

Science, Vol 204, Issue 4392, 523-526
Copyright © 1979 by American Association for the Advancement of Science

articles

Intraretinal distribution of cone pigments in certain teleost fishes

JS Levine, EF MacNichol Jr, T Kraft, and BA Collins

Microspectrophotometric investigations of visual pigments in the teleost family Cichlidae determined that morphological "twin cones" need not be "pigment twins" as well. In each species there were two pigments that could be found in these cells; a "longwave" and a "shortwave" type whose precise spectral location varies for each species, making the terms red and green inadequate to describe them. Studies of the receptor mosaic with the nitro-blue tetrazolium chloride reduction technique permitted the sampling of larger receptor populations and confirmed that twin cones in several cichlid species could be either longwave-longwave, longwave-shortwave, or shortwave-shortwave pairs, and that the relative proportions of these twin cone types vary in different parts of the retinas. Nonuniform distribution of pigment types was also evident in the eyes of several other species from a variety of piscine taxa.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Cone Opsin Genes of African Cichlid Fishes: Tuning Spectral Sensitivity by Differential Gene Expression.
K. L. Carleton and T. D. Kocher (2001)
Mol. Biol. Evol. 18, 1540-1550
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