MINDY WEISBERGER, LIVE SCIENCE
15 JANUARY 2021
A desert gecko from Namibia has brilliant glow-in-the-dark markings that shine neon green by the light of the moon. The mechanism that produces its glow has never been seen before in land animals with backbones.
Web-footed geckos (
Pachydactylus rangei) have translucent skin with large, yellowish markings: stripes on their sides and rings surrounding their eyes. But those markings light up brightly when they absorb the moon s bluer light.
Fluorescence when light is absorbed and then emitted at a longer wavelength has been found in other reptiles and amphibians, produced by their bones or by chemical secretions in their skin. However, web-footed geckos generate their light using skin pigment cells that are filled with guanine crystals.
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