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Survival is reduced when endogenous period deviates from 24 h in a non-human primate, supporting the circadian resonance theory.
Hozer, Clara; Perret, Martine; Pavard, Samuel; Pifferi, Fabien.
  • Hozer C; Unité Mécanismes Adaptatifs et Evolution, Muséum National d'Histoire Naturelle, CNRS, 1 Avenue du Petit Château, 91800, Brunoy, France.
  • Perret M; Unité Mécanismes Adaptatifs et Evolution, Muséum National d'Histoire Naturelle, CNRS, 1 Avenue du Petit Château, 91800, Brunoy, France.
  • Pavard S; Unité Eco-Anthropologie (EA), Muséum National d'Histoire Naturelle, CNRS, Université de Paris, 75016, Paris, France.
  • Pifferi F; Unité Mécanismes Adaptatifs et Evolution, Muséum National d'Histoire Naturelle, CNRS, 1 Avenue du Petit Château, 91800, Brunoy, France. fabien.pifferi@mnhn.fr.
Sci Rep ; 10(1): 18002, 2020 10 22.
Article en En | MEDLINE | ID: mdl-33093578
ABSTRACT
Circadian rhythms are ubiquitous attributes across living organisms and allow the coordination of internal biological functions with optimal phases of the environment, suggesting a significant adaptive advantage. The endogenous period called tau lies close to 24 h and is thought to be implicated in individuals' fitness according to the circadian resonance theory, fitness is reduced when tau gets far from 24 h. In this study, we measured the endogenous period of 142 mouse lemurs (Microcebus murinus), and analyzed how it is related to their survival. We found different effects according to sex and season. No impact of tau on mortality was found in females. However, in males, the deviation of tau from 24 h substantially correlates with an increase in mortality, particularly during the inactive season (winter). These results, comparable to other observations in mice or drosophila, show that captive gray mouse lemurs enjoy better fitness when their circadian period closely matches the environmental periodicity. In addition to their deep implications in health and aging research, these results raise further ecological and evolutionary issues regarding the relationships between fitness and circadian clock.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Estaciones del Año / Envejecimiento / Mortalidad / Ritmo Circadiano / Cheirogaleidae / Fotoperiodo / Evolución Biológica Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Año: 2020 Tipo del documento: Article

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Estaciones del Año / Envejecimiento / Mortalidad / Ritmo Circadiano / Cheirogaleidae / Fotoperiodo / Evolución Biológica Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Año: 2020 Tipo del documento: Article