While most organisms have biological clocks synchronized with the day-night cycle (circadian rhythms), marine animals in tidal areas have also developed circatidal rhythms to align with the tidal cycle.
While most organisms have biological clocks synchronized with the day-night cycle , marine animals in tidal areas have also developed circatidal rhythms to align with the tidal cycle. Comparing the activity and genetic expression of snails from tidal and non-tidal areas, researchers demonstrate that circatidal rhythms develop as snails adapt to tidal environments.
Building on their previous findings, Associate Professor Yuma Takahashi, along with Dr. Takumi Yokomizo from Chiba University , revealed that freshwater snails living in tidal environments gradually adjust their biological rhythms to synchronize with the tidal cycles. The study published in the journal Heredity on March 27, 2024, offers insights into the adaptability and potential divergence of biological rhythms in response to tidal environments.
These results imply that the expression rhythms of genes controlled by the biological clock are sensitive to environmental changes, and can be influenced by genetic changes that result from environmental adaptation."Our study focused on the flexibility of biological clocks and found their potential to change biological rhythms according to dominant environmental cycles," says Dr. Takahashi.
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