Literaturdatenbank
Literaturdatenbank |
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Lipetz, L. E. (1984). Pigment types, densities and concentrations in cone oil droplets of emydoidea blandingii. Vision Research, 24(6), 605–612.
Added by: Admin (24 Aug 2008 20:00:22 UTC) |
| Resource type: Journal Article BibTeX citation key: Lipetz1984 View all bibliographic details  |
Categories: General Keywords: Emydidae, Emydoidea, Emydoidea blandingii, Schildkröten = turtles + tortoises, Sehvermögen = vision Creators: Lipetz Collection: Vision Research |
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| Abstract |
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The peak optical densities (Dp) of colored oil droplets in the retinal cones of the turtle, Emydoidea blandingii, were found to range from 1.2 to 8.8 for yellow droplets, 3.2 to 11.4 for orange, and 8.8 to 58 for red. The yellow droplets' spectra matched that of zeaxanthin, the red and orange matched astaxanthin. One type of clear droplet absorbed negligibly in the visible spectrum. A second type had a Dp approximately 0.9 somewhere between 370 and 400 nm. The accessory cone had no oil droplet, but its ellipsoid contained a pigment with the absorption spectrum of zeaxanthin and Dp approximately 1.1.
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