Metadatos
Mostrar el registro completo del ítemCompartir este ítem
Bivalve mollusc circadian clock genes can run at tidal frequency
Idioma
EN
Article de revue
Este ítem está publicado en
Proceedings of the Royal Society B: Biological Sciences. 2020-01-15, vol. 287, n° 1918, p. 20192440
Resumen en inglés
Marine coastal habitats are complex cyclic environments as a result of sun and moon interactions. In contrast to the well-known circadian orchestration of the terrestrial animal rhythmicity (~24h), the mechanism responsible ...Leer más >
Marine coastal habitats are complex cyclic environments as a result of sun and moon interactions. In contrast to the well-known circadian orchestration of the terrestrial animal rhythmicity (~24h), the mechanism responsible for the circatidal rhythm (~12.4h) remains largely elusive in marine organisms. We revealed in subtidal field conditions that the oyster Crassostrea gigas exhibits tidal rhythmicity of circadian clock genes and clock-associated genes. Free-running experiment showed an endogenous circatidal rhythm. In parallel, we showed in the field that oysters’ valve behavior exhibited a strong tidal rhythm combined with a daily rhythm. In the free-running experiment, all behavioral rhythms were circatidal, and half of them were also circadian. Our results fuel the debate on endogenous circatidal mechanisms. In contrast to the current hypothesis on the existence of an independent tidal clock, we suggest that a single “circadian/circatidal” clock in bivalves is sufficient to entrain behavioral patterns at tidal and daily frequencies.< Leer menos
Palabras clave en inglés
Circatidal clock
circadian clock
tidal rhythm
biological timing
oyster
bimodal behavior
Centros de investigación