Without a full moon, no reproduction of corals


DECRYPTION – Researchers have identified a key parameter explaining how the lunar cycle regulates the spawning of certain species.

The moon and the oceans are not linked only by the tides. The phases of the moon are also a key element in the reproduction of corals. The influence of the full moon on the spawning of these marine animals has been known for a long time, but the precise mechanisms remain a subject of research. A publication, published this week in the journal PNAS, provides details on the influence of the moon on the spawning of corals Dipsastraea speciosa.

The researchers studied this species in its ecosystem and in the laboratory, by modifying the lighting conditions of the corals. They demonstrated that moonlight actually inhibits the spawning of these corals and that an episode of total darkness is necessary between the daytime period and then nighttime moonlighting. “In nature, the moonrise shifts later and later in the lunar cycle to occur after sunset exactly the day after the full moon”, detail the researchers.

So it’s the darkness of the next day

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