Abstract
Drosophila melanogaster has been an instrumental animal model for defining key properties of circadian rhythms and for investigating the cellular and molecular mechanisms regulating circadian timekeeping. Over the past few decades, locomotor activity rhythm has served as a standard phenotypic readout that reflects the functionality of the endogenous circadian clock. Automated, high-throughput data recording from a large number of individuals ensures the robustness and reproducibility of this assay. When combined with versatile genetic tools of the fly model, locomotor activity assay has been used repeatedly in large mutant screens and mechanistic studies to identify and characterize key molecular components of the animal circadian clock. In this chapter, we detail the workflow for conducting circadian locomotor activity assay with the most commonly used Drosophila Activity Monitoring System (DAMS). We also describe the utility of selected software to analyze and visualize locomotor activity data.
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Acknowledgments
We would like to thank Ben L. Kunimoto for technical support. Chronobiology research in the Chiu Lab is supported by the National Institutes of Health grant R01 DK124068 to JCC. YDC is supported by the Sean & Anne Duffey and Hugh & Geraldine Dingle Research Fellowship.
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Cai, Y.D., Hidalgo Sotelo, S.I., Jackson, K.C., Chiu, J.C. (2022). Assaying Circadian Locomotor Activity Rhythm in Drosophila. In: Hirota, T., Hatori, M., Panda, S. (eds) Circadian Clocks. Neuromethods, vol 186. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-2577-4_3
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