Researchers have found that undernourished bold jumping spiders begin to lose light-sensitive photoreceptors.
Biologists made the startling discovery while studying the eyes of bold jumping spiders in the lab. They found that when they decreased the diets of these tiny hunters, the spiders' vision decreased too, according to a study published in the May issue of the journal Vision Research .
Jumping spiders have high-resolution color vision, which they see with their principal, forward-facing eyes. Buschbeck thinks that studying these spiders could provide insight into the role nutrition plays in human eye diseases such as macular degeneration. "The condition of the eyes of the spiders with less nutrition was much worse," Buschbeck said."We could tell just by looking at them with the ophthalmoscope that some of their photoreceptors had died."
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