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How animals’ biological clocks turn with the tides.

The 12.4-h circatidal clock allows marine animals to cope with the tides. Louis et al. show that in the crustacean P. hawaiensis, this timekeeper is composed of the same four core proteins as the circadian clock, but that the transcriptional wiring between these components differs in circadian and circatidal brain neurons.

The 12.4-h circatidal clock allows marine animals to cope with the tides. Louis et al. show that in the crustacean P. hawaiensis, this timekeeper is composed of the same four core proteins as the circadian clock, but that the transcriptional wiring between these components differs in circadian and circatidal brain neurons.

Circadian rhythm genes also regulate circatidal behaviors in tiny crustaceans Parhyale hawaiensis.

Scientists at UMass Chan Medical School and the Marine Biological Laboratory at Woods Hole have shown that the four core clock genes responsible for maintaining circadian rhythms in animals—Per, Cry2, Bmal1 and Clk—also regulate circatidal behavior in the crustacean P.

Animals living near the coastline rely on circatidal clocks to predict the tides. The mechanism underlying these timers is not known. Kwiatkowski et al. introduce P. hawaiensis as a model to study the...

Mice and many marine organisms exhibit ~12-h ultradian rhythms, however, direct evidence of ~12-h ultradian rhythms in humans is lacking. Here, we performed prospective, temporal transcriptome profiling of peripheral white blood cells from three healthy humans. All three participants independently exhibited robust ~12-h transcriptional rhythms in molecular programs involved in RNA and protein metabolism, with strong homology to circatidal gene programs previously identified in Cnidarian marine species.

Biological clocks are a ubiquitous feature of all life, enabling the use of natural environmental cycles to track time. Although studies on circadian rhythms have contributed greatly to the knowledge ...

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Biological clocks are a ubiquitous feature of all life, enabling the use of natural environmental cycles to track time. Although studies on circadian rhythms have contributed greatly to the knowledge ...

Biological clocks are a ubiquitous feature of all life, enabling the use of natural environmental cy

Biological clocks are a ubiquitous feature of all life, enabling the use of natural environmental cy