Evidence of circadian rhythms in a cave
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Jegla, Thomas C. ;Poulson, Thomas L.
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Article
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1968
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John Wiley and Sons
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English
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Evidence of a circadiam clock mechanism was found in the cave crayfish, Orconectes pellucidus, even though it is blind and has been isolated from daiIy cycles for at least 25,000 generations. Five of seven crayfish tested under cave conditions of continuous darkness and 13Β°C showed apparent rhythms