Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
|
 |
|
Przyrembel, C., Keller, B., & Neumeyer, C. (1995). Trichromatic color vision in the salamander (salamandra salamandra). Journal of Comparative Physiology A, 176(4), 575–586. Added by: Sarina (2009-01-21 12:38:11) Last edited by: Sarina (2014-10-11 13:01:13) |
| Resource type: Journal Article DOI: 10.1007/BF00196422 BibTeX citation key: Przyrembel1995 View all bibliographic details  |
Categories: Englisch = English Keywords: Amphibien = Amphibians, Farbsehen = Color Vision, Sehvermögen = Visual Perception Creators: Keller, Neumeyer, Przyrembel Collection: Journal of Comparative Physiology A |
Views: 7/1477 Views index: % Popularity index: 0.75% |
| Abstract |
|
Abstract Spectral sensitivity functions were measured between 334 nm and 683 nm in Salamandra salamandra by utilizing two behavioral reactions: the negative phototactic response, and the prey catching behavior elicited by a moving worm dummy. The action spectrum of the negative phototactic response revealed 3 pronounced maxima: at 360–400 nm, at 520–540 nm, and at 600–640 nm. In the range around 450 nm, there was a ldquoreaction gaprdquo where sensitivity could not be measured. The action spectrum of the prey catching behavior was entirely different: maximal sensitivity was found at 500 nm and at 570 nm. Between 500 nm and 334 nm sensitivity decreased continuously for about 1 log unit (Fig. 6). Experiments under chromatic adaptation using the prey catching behavior indicate that the relatively high sensitivity in the ultraviolet range is not due to a separate ultraviolet photoreceptor, but is based on the responses of a photoreceptor maximally sensitive at about 500 nm. Color discrimination was tested by moving a colored worm dummy within a differently colored surround of equal subjective brightness. The salamanders were able to discriminate blue from green, and green from red (Fig. 10). The results can be explained by assuming a trichromatic color vision based on 3 photoreceptor types maximally sensitive around 450 nm, 500 nm and 570 nm (Fig. 12). Key words Color vision - Spectral sensitivity - Ultraviolet - Amphibia - Salamanders - Salamandra salamandra Added by: Sarina Last edited by: Sarina |