Visual receptor pigments in the African cichlid fish, Haplochromis burtoni

Fernald, R.D.; Liebman, P.A.

Vision Research 20(10): 857-864

1980


ISSN/ISBN: 0042-6989
PMID: 7467140
Accession: 006907906

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Abstract
The retinal receptors of the African cichlid fish, H. burtoni, are arranged in a mosaic of square arrays which have 4 double cones around a central cone. Microspectrophotometric measurement of spectral absorbance reveals that the short single cones contain the blue photopigment, P455. The larger double cones contain red-green pigment pairs of P562 and P523. Rods are interspersed throughout the cone array and contain rhodopsin, P500. Spectral shape, pigment absorbance and the .lambda.max of photo-products are characteristic of A1 based pigments. The retinal receptors of H. burtoni appear well matched to important visual recognition tasks.