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Publication year
2008Source
Photochemistry and Photobiology, 84, 4, (2008), pp. 855-62ISSN
Publication type
Article / Letter to editor
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Organization
Biochemistry (UMC)
Journal title
Photochemistry and Photobiology
Volume
vol. 84
Issue
iss. 4
Page start
p. 855
Page end
p. 62
Subject
DCN 1: Perception and Action; NCMLS 1: Immunity, infection and tissue repairAbstract
The tiger salamander lives in shallow water with bright light in the aquatic phase, and in dim tunnels or caves in the terrestrial phase. In the aquatic phase, there are five types of photoreceptors--two types of rods and three types of cones. Our previous studies showed that the green rods and blue-sensitive cones contain the same visual pigment and have the same absorbance spectra; however, the green rods have a larger photon-catch area and thus have higher light sensitivity than the blue-sensitive cones. Here we show that after metamorphosis, the terrestrial salamander looses the blue-sensitive cones, while the density of the green rods increases. Moreover, the size of the green rod outer segments is increased in the terrestrial phase, compared to that in the aquatic phase. This switch from the blue-sensitive cones to the green rods may represent an adaptation to the dim light environment of the terrestrial phase.
This item appears in the following Collection(s)
- Academic publications [238441]
- Electronic publications [122508]
- Faculty of Medical Sciences [90373]
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