Abstract
THAT echinoderms are sensitive to light has been generally agreed, but the nature of their photoreceptors has been the subject of many conflicting statements, sometimes based wholly on inadequate evidence. This is especially so in the echinoids, one family of which, the Diadematidæ, possesses several members which are strikingly sensitive to light1–6. Light emission has also been attributed to the species of Diadema1,7, but this has also been questioned1 and, in the case of Diadema setosum (Leske), denied5.
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MILLOTT, N. Light Emission and Light Perception in Species of Diadema. Nature 171, 973–974 (1953). https://doi.org/10.1038/171973a0
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DOI: https://doi.org/10.1038/171973a0
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