Article
A quantitative test of the predicted relationship between countershading and lighting environment.
The American naturalist - 1 Dec 2012
Allen William L, Baddeley Roland, Cuthill Innes C, Scott-Samuel Nicholas E
Abstract excerpt
Countershading, a vertical luminance gradient from a dark back to a light belly, is perhaps the most common coloration phenotype in the animal kingdom. Why? We investigated whether countershading functions as self-shadow concealment (SSC) in ruminants. We calculated "optimal" countershading for SSC by measuring illumination falling onto a model ruminant as a function of time of day and lighting environment....
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