Survival is reduced when endogenous period deviates from 24 h in a non-human primate, supporting the circadian resonance theory.

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 inacti

SUBMITTER: Hozer C 

PROVIDER: S-EPMC7582969 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature