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Fleishman, L. J., Marshall, C. J., & Hertz, P. E. (1995). Comparative study of temporal response properties of the visual system of three species of anoline lizards. Copeia, 1995(2), 422–431. 
Added by: Sarina (2009-04-16 13:17:28)   
Resource type: Journal Article
BibTeX citation key: Fleishman1995
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Categories: Englisch = English
Keywords: Echsen = Lizards, Flimmerwahrnehmung = Flicker Perception, Reptilien = Reptiles, Sehvermögen = Visual Perception
Creators: Fleishman, Hertz, Marshall
Collection: Copeia
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Abstract
Anolis lizards are highly visual predators of small moving prey. An earlier study that compared temporal properties of the visual system of several species (Jenssen and Swenson, 1974) concluded that there is a correlation between the temporal response pattern and typical habitat light intensity. We explored this relationship in three closely related anoline species from Puerto Rico, each of which occupies a habitat characterized by a distinctly different level of shade. Initially we quantified the average irradiance present in each habitat. We then measured electroretinographic responses to flickering light as a function of stimulus frequency and average irradiance. We found only minor differences among the responses of the different species and little evidence of among-species evolutionary divergence of the visual system in response to differences in typical habitat light conditions. The differences we did find seemed to be based on evolutionary history, with the two most closely related species being the most similar, even though their habitats showed the largest difference in average irradiance.
Added by: Sarina  
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