TRAN, Damien; ANDRADE, Hector; CAMUS, Lionel; LEOPOLD, Peter; BALLANTINE, Carl; BERGE, Jørgen; DURIER, Guillaume; SOW, Mohamedou; CIRET, Pierre

doi:10.1016/j.isci.2023.106168

Environnements et Paléoenvironnements OCéaniques [EPOC]

ANDRADE, Hector
Tromsø department [IMR]

CAMUS, Lionel
Akvaplan-Niva [Tromsø]

Langue

Article de revue

Ce document a été publié dans

iScience. 2023-03, vol. 26, n° 3, p. 106168

Résumé en anglais

Marine organisms living at high latitudes are faced with a light climate that undergoes drastic annual changes, especially during the polar night (PN) when the sun remains below the horizon for months. This raises the question of a possible synchronization and entrainment of biological rhythms under the governance of light at very low intensities. We analyzed the rhythms of the mussel Mytilus sp. during PN. We show that (1) mussels expressed a rhythmic behavior during PN; (2) a monthly moonlight rhythm was expressed; (3) a daily rhythm was expressed and influenced by both sunlight and moonlight; and (4) depending on the different times of PN and moon cycle characteristics, we were able to discriminate whether the moon or the sun synchronize the daily rhythm. Our findings fuel the idea that the capability of moonlight to synchronize daily rhythms when sunlight is not sufficient would be a crucial advantage during PN.< Réduire

Mots clés en anglais

Biological sciences

Evolutionary biology

Zoology

URI

https://oskar-bordeaux.fr/handle/20.500.12278/188671

DOI

http://dx.doi.org/10.1016/j.isci.2023.106168

Project ANR

Surveillance de la qualité de eaux côtières à l'aide de molusques bivalves bio-capteurs - ANR-15-CE04-0002

Unités de recherche

EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805

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Evidence of separate influence of moon and sun on light synchronization of mussel’s daily rhythm during the polar night