Negative Energy Balance Enhances Ultradian Rhythmicity in Spring-Programmed Voles.

ABSTRACT: Voles are small herbivorous rodents that can display both circadian activity rhythms (~24-h periodicity) and ultradian activity rhythms (~1- to 6-h periodicity). Ultradian rhythms are observed on an individual level, but also in synchronized populations. Ultradian rhythm period has been suggested to be influenced by energy balance, but the underlying mechanisms of ultradian rhythmicity are poorly understood. We manipulated energy balance by implementing the "work-for-food" paradigm, in which small rodents are exposed to increasing levels of food scarcity at different ambient temperatures in the laboratory. Photoperiodical spring-programmed voles on high workload changed their nocturnal circadian activity and body temperature rhythm to ultradian patterns, indicating that a negative energy b

SUBMITTER: van Rosmalen L 

PROVIDER: S-EPMC8276337 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature