Visual pigments and oil droplets from six classes of photoreceptor in the retinas of birds
- J. Bowmaker, L. A. Heath, S. Wilkie, D. Hunt
- BiologyVision Research
- 1 August 1997
Evolution of vertebrate visual pigments
- J. Bowmaker
- Biology, Environmental ScienceVision Research
- 1 September 2008
Spectral tuning of avian violet- and ultraviolet-sensitive visual pigments.
- S. Wilkie, P. Robinson, T. Cronin, S. Poopalasundaram, J. Bowmaker, D. Hunt
- BiologyBiochemistry
- 14 June 2000
This paper presents the sequences of two pigments isolated from Humbolt penguin and pigeon with intermediate lambda(max) values of 403 and 409 nm, respectively and identifies five amino acid sites that show a pattern of substitution between species that is consistent with differences inlambda(max).
Visual pigments of rods and cones in a human retina.
- J. Bowmaker, H. Dartnall
- BiologyJournal of Physiology
- 1980
If assumptions are made about the length of cones and about pre‐receptoral absorption, it is possible to derive psychophysical sensitivities for the cones that closely resemble the appropriate pi mechanisms of W. S. Stiles, however, the psychophysical sensitivity derived for the rods is considerably broader than the C.I.E. scotopic sensitivity function.
Evolution of the cichlid visual palette through ontogenetic subfunctionalization of the opsin gene arrays.
- T. Spady, J. Parry, P. Robinson, D. Hunt, J. Bowmaker, K. Carleton
- BiologyMolecular biology and evolution
- 1 August 2006
Subfunctionalization through differential ontogenetic expression may be a key mechanism for preservation of opsin genes and provide a palette from which selection creates the diverse visual sensitivities found among the cichlid species of the lacustrine adaptive radiations.
Human visual pigments: microspectrophotometric results from the eyes of seven persons
- H. Dartnall, J. Bowmaker, J. Mollon
- MathematicsProceedings of the Royal Society of London…
- 22 November 1983
Both patients were classified as normal trichromats by all clinical tests of colour vision but there was a clear difference in their relative sensitivities to long-wave fields, which proved to be that required by the microspectrophotometric results.
The molecular basis for spectral tuning of rod visual pigments in deep-sea fish.
- D. Hunt, K. Dulai, J. Partridge, P. Cottrill, J. Bowmaker
- BiologyJournal of Experimental Biology
- 1 October 2001
In this study, the rod opsin gene sequences from 28 deep-sea fish species drawn from seven different Orders are compared and a phylogenetic analysis predicts that the pigment in the ancestral species would have had a lambda(max) of approximately 480 nm.
Colour vision in the passeriform bird, Leiothrix lutea: correlation of visual pigment absorbance and oil droplet transmission with spectral sensitivity
- E. Maier, J. Bowmaker
- BiologyJournal of Comparative Physiology
- 1 April 1993
Comparison of these results with the behavioural spectral sensitivity function of Leiothrix lutea suggests that the increment threshold photopic spectral sensitivity of this avian species is mediated by the 4 single cone classes modified by neural opponent mechanisms.
Mix and Match Color Vision: Tuning Spectral Sensitivity by Differential Opsin Gene Expression in Lake Malawi Cichlids
- J. Parry, K. Carleton, T. Spady, A. Carboo, D. Hunt, J. Bowmaker
- BiologyCurrent Biology
- 11 October 2005
Variations of colour vision in a New World primate can be explained by polymorphism of retinal photopigments
- J. Mollon, J. Bowmaker, G. H. Jacobs
- BiologyProceedings of the Royal Society of London…
- 22 September 1984
Good quantitative agreement was found when the microspectrophoto-metrically measured absorbance spectra were used to predict the behavioural sensitivity of individual animals to long wavelengths and suggests that the behavioural variation arises from variation in the retinal photopigments.
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