Photoreceptor sectral sensitivities in terrestrial animals: adaptations for luminance and colour vision

Osorio, D. and Vorobyev, M. (2005) Photoreceptor sectral sensitivities in terrestrial animals: adaptations for luminance and colour vision. Proceedings of the Royal Society of London B - Biological Sciences, 272 1574: 1745-1752. doi:10.1098/rspb.2005.3156


Author Osorio, D.
Vorobyev, M.
Title Photoreceptor sectral sensitivities in terrestrial animals: adaptations for luminance and colour vision
Journal name Proceedings of the Royal Society of London B - Biological Sciences   Check publisher's open access policy
ISSN 1471-2954
0962-8452
Publication date 2005-09
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1098/rspb.2005.3156
Volume 272
Issue 1574
Start page 1745
End page 1752
Total pages 8
Place of publication London, United Kingdom
Publisher The Royal Society Publishing
Language eng
Subject 06 Biological Sciences
Abstract This review outlines how eyes of terrestrial vertebrates and insects meet the competing requirements of coding both spatial and spectral information. There is no unique solution to this problem. Thus, mammals and honeybees use their long-wavelength receptors for both achromatic (luminance) and colour vision, whereas flies and birds probably use separate sets of photoreceptors for the two purposes. In particular, we look at spectral tuning and diversification among ‘long-wavelength’ receptors (sensitivity maxima at greater than 500 nm), which play a primary role in luminance vision. Data on spectral sensitivities and phylogeny of visual photopigments can be incorporated into theoretical models to suggest how eyes are adapted to coding natural stimuli. Models indicate, for example, that animal colour vision—involving five or fewer broadly tuned receptors—is well matched to most natural spectra. We can also predict that the particular objects of interest and signal-to-noise ratios will affect the optimal eye design. Nonetheless, it remains difficult to account for the adaptive significance of features such as co-expression of photopigments in single receptors, variation in spectral sensitivities of mammalian L-cone pigments and the diversification of long-wavelength receptors that has occurred in several terrestrial lineages.
Keyword Colour vision
Evolution
Ecology
Retina
Photoreceptor
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Excellence in Research Australia (ERA) - Collection
School of Biomedical Sciences Publications
 
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Created: Wed, 12 Apr 2006, 17:42:51 EST