Influence of Photoperiod in Accelerating the Reentrainment in Drosophila

Abstract

Efficacy of the short photoperiod (Spp) and the long photoperiod (Lpp) in accelerating the reentrainment was assessed in Drosophila biarmipes. The Spp accelerated the reentrainment after the phase advance of light-dark (LD) cycles, which was associated with the early activity onset (Ψo) and the short period of free-running rhythm (τ). The Lpp accelerated the reentrainment after the phase delay of LD cycles, which was associated with the late Ψo and the long τ. This study indicates that the photoperiodic modulation of the circadian waveform of the underlying pacemaker that controls activity rhythm influenced the rate of reentrainment in D. biarmipes. (Author correspondence: [email protected])

Keywords:

• Activity
• Drosophila
• Jetlag
• Photoperiod
• Reentrainment

ACKNOWLEDGMENTS

The authors thank the three anonymous reviewers for their valuable comments.

Declaration of Interest: The study has benefited from the equipment obtained under the research grant FIST SR/SO/AS-MS01/2009 funded by Department of Science and Technology, New Delhi, to D.S.J.

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.