Present address: Unit of Evolutionary Biology and Systematic Zoology, Department of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany.
Spectral sensitivity of mollies: comparing surface- and cave-dwelling Atlantic mollies, Poecilia mexicana
Article first published online: 28 JUN 2006
2006 The Fisheries Society of the British Isles
Journal of Fish Biology
Volume 69, Issue 1, pages 54–65, July 2006
How to Cite
Körner, K. E., Schlupp, I., Plath, M. and Loew, E. R. (2006), Spectral sensitivity of mollies: comparing surface- and cave-dwelling Atlantic mollies, Poecilia mexicana. Journal of Fish Biology, 69: 54–65. doi: 10.1111/j.1095-8649.2006.01056.x
- Issue published online: 28 JUN 2006
- Article first published online: 28 JUN 2006
- (Received 21 June 2004, Accepted 19 December 2005)
- Amazon molly;
- cave fishes;
- colour vision;
- video playback
The visual pigments of cones and rods in three species of mollies, Poecilia mexicana, Poecilia latipinna and their asexual hybrid Poecilia formosa, were examined using microspectrophotometry. In P. mexicana, populations from extreme photic habitats were used: one population originated from a clear water habitat, one from a milky water habitat and another from a completely dark cave. Ultraviolet-sensitive cones were found in all species. Differences in the λmax values of the visual pigments were small between species and among the three P. mexicana populations, but dark-reared cave fishes showed appreciably higher variance. The hybrid species P. formosa showed a highly variable long wavelength cone absorbance, ranging from 528·9 to 598·5 nm, suggesting multiple opsin expression or chromophore mixing.