Examining activity and transcriptome rhythms of snails from both tidal and nontidal populations (IMAGE)
Caption
A hypothesis on the process of adaptation to the tidal environment in a freshwater snail. The circatidal rhythm is not expressed in nontidal individuals under natural conditions. In the early stage of adaptation to the tidal environment, the flexibility of biological rhythms allowed snails to cope with tidal cycles. Subsequently, some genetic changes occurred, and snails showed a more pronounced circatidal rhythm in the tidal environment.
Credit
Takumi Yokomizo from The Center for Ecological Research, Kyoto University
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