Journal of Comparative Physiology A

, Volume 177, Issue 5, pp 559–567

Visual pigments and spectral sensitivity of the diurnal gecko Gonatodes albogularis

  • J. M. Ellingson
  • L. J. Fleishman
  • E. R. Loew
Original Paper

DOI: 10.1007/BF00207185

Cite this article as:
Ellingson, J.M., Fleishman, L.J. & Loew, E.R. J Comp Physiol A (1995) 177: 559. doi:10.1007/BF00207185

Abstract

The visual pigments and oil droplets in the retina of the diurnal gecko Gonatodes albogularis were examined microspectrophotometrically, and the spectral sensitivity under various adapting conditions was recorded using electrophysiological responses. Three classes of visual pigments were identified, with λmax at about 542, 475, and 362 nm. Spectral sensitivity functions revealed a broad range of sensitivity, with a peak at approximately 530–540 nm. The cornea and oil droplets were found to be transparent across a range from 350–700 nm, but the lens absorbed short wavelength light below 450 nm. Despite the filtering effect of the lens, a secondary peak in spectral sensitivity to ultraviolet wavelengths was found. These results suggest that G. albogularis does possess the visual mechanisms for discrimination of the color pattern of conspecifics based on either hue or brightness. These findings are discussed in terms of the variation in coloration and social behavior of Gonatodes.

Key words

Gonatodes albogularisVisual pigmentsElectroretinogramSpectral sensitivityUV-cone

Abbreviations

ERG

electroretinogram

MSP

microspectrophotometry

UV

ultraviolet

λmax

wavelength of maximum absorbance

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • J. M. Ellingson
    • 1
  • L. J. Fleishman
    • 2
  • E. R. Loew
    • 3
  1. 1.Department of ZoologyUniversity of TexasAustinUSA
  2. 2.Department of Biological SciencesUnion CollegeSchenectadyUSA
  3. 3.Section and Department of PhysiologyCornell UniversityIthacaUSA
  4. 4.Clifton ForgeUSA