Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Font, E., & Molina-Borja, M. (2004). Ultraviolet reflectance of color patches in gallotia galloti lizards from tenerife, canary islands. In V. Pérez-Mellado, N. Riera & A. Perera (Eds), The Biology of Lacertid lizards. Evolutionary and Ecological Perspectives (pp. 201–221). Recerca: Institut Menorquí d’Estudis. Added by: Sarina (2009-04-20 12:11:50) |
| Resource type: Book Article ID no. (ISBN etc.): 8495718200 BibTeX citation key: Font2004 View all bibliographic details  |
Categories: Englisch = English Keywords: Echsen = Lizards, Farbe = Color, Farbsehen = Color Vision, Reptilien = Reptiles, Sehvermögen = Visual Perception, Spektrum = Spectrum, Ultraviolett = Ultraviolet Creators: Font, Molina-Borja, Perera, Pérez-Mellado, Riera Publisher: Institut Menorquí d’Estudis (Recerca) Collection: The Biology of Lacertid lizards. Evolutionary and Ecological Perspectives |
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Meine Sichtweise (Keine vollständige Zusammenfassung des Artikels! Meine Meinung muss nicht mit der Meinung der Autoren übereinstimmen! Bitte lesen Sie auch die Originalarbeit!)
Beeindruckendes Paper mit tollen Fotos und einem guten LIteraturüberblick über die UV-Färbung, das UV-Farbsehen und seine Bedeutung bei Echsen. Absolut lesenswert!
Added by: Sarina Last edited by: Sarina |
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Bright colors and conspicuous visual displays have been described in many lacertid species. However, previous studies of lacertid coloration and behavior have largely ignored differences between the lizards’ and our own visual perception, including the possibility that the visual range of lacertids extends into the near ultraviolet (UV) region of the spectrum. In this study we use UV photography and reflectance spectrophotometry to document the presence and distribution of UV reflectance in color patches of Gallotia lizards from the Canary Islands. We found considerable reflection of UV light in blue, yellow, and green color patches of different Gallotia species. For example, the lateral and ventro-lateral blue patches of G. galloti from Tenerife show a single peak of reflectance with a maximum in the near UV waveband, close to the peak sensitivity of UV retinal cones in lizards with known UV vision. The blue, UV-reflecting patches are present in lizards of either sex. However, there are differences in the spectral shape of blue patches from male and female lizards, particularly in the UV range. We conclude that G. galloti are sexually dichromatic in their own visual world. Furthermore, we found large interindividual differences in the reflectance of blue patches in lizards from the same sex and population. These differences are again most marked in the UV region of the spectrum. We discuss possible functions of UV-reflecting patches in sex recognition, male-male contests, and mutual mate choice. Key words: ultraviolet, lizard, coloration, signaling, sexual dichromatism, spectrophotometry, UV photography Added by: Sarina Last edited by: Sarina |