Parametric effects of light acting via multiple photoreceptors contribute to circadian entrainment in Drosophila melanogaster.

ABSTRACT: Circadian rhythms in physiology and behaviour have near 24 h periodicities that must adjust to the exact 24 h geophysical cycles on earth to ensure adaptive daily timing. Such adjustment is called entrainment. One major mode of entrainment is via the continuous modulation of circadian period by the prolonged presence of light. Although Drosophila melanogaster is a prominent insect model of chronobiology, there is little evidence for such continuous effects of light in the species. In this study, we demonstrate that prolonged light exposure at specific times of the day shapes the daily timing of activity in flies. We also establish that continuous UV- and blue-blocked light lengthens the circadian period of Drosophila and provide evidence that this is produced by the combined

SUBMITTER: Abhilash L 

PROVIDER: S-EPMC10498047 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature