The influence of ultraviolet reflectance differs between conspicuous aposematic signals in neotropical butterflies and poison frogsJustin Yeager & James B. Barnett
Warning signals are often characterized by highly contrasting, distinctive and memorable colors. Both chromatic (hue) and achromatic (brightness) contrast contribute to signal efficacy, making longwave colored signals (red and yellow) that generate both chromatic and achromatic contrast common. Shortwave colors (blue and ultraviolet) do not contribute to luminance perception, yet are also common in warning signals. The presence of UV aposematic signals is paradoxical as UV perception is not universal, and evidence for its utility...
1 citation reported since publication in 2021.
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