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Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
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Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures
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Published on: November 11, 2016

Socially synchronized circadian oscillators.

Guy Bloch1, Erik D Herzog, Joel D Levine

  • 1Department of Ecology, Evolution, and Behavior, The Hebrew University of Jerusalem, Jerusalem, Israel.

Proceedings. Biological Sciences
|July 5, 2013
PubMed
Summary
This summary is machine-generated.

Social cues synchronize circadian clocks in animal groups, influencing fitness. This study explores fruit flies, honeybees, and rodent brains to understand socially synchronized circadian rhythms beyond individual clocks.

Keywords:
Drosophilacouplingentrainmenthoneybeesocial synchronizationsuprachiasmatic nucleus

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Area of Science:

  • Chronobiology
  • Behavioral Ecology
  • Neuroscience

Background:

  • Circadian clocks regulate daily physiological and behavioral rhythms, typically studied in isolated animals.
  • Environmental light-dark cycles entrain these rhythms, but social interactions are crucial in natural habitats.
  • The role of social cues in synchronizing circadian systems and their adaptive significance remains largely unexplored.

Purpose of the Study:

  • To investigate the mechanisms and adaptive functions of socially synchronized circadian oscillators.
  • To highlight model systems for studying group-level circadian organization.

Main Methods:

  • Utilizing the fruit fly (Drosophila) for its genetic tools.
  • Examining the honeybee (Apis mellifera) for its complex social structure.
  • Analyzing the rodent suprachiasmatic nucleus (SCN) as a network of coupled oscillators.

Main Results:

  • Social cues are critical for synchronizing circadian rhythms in group settings.
  • Different model systems offer unique advantages for studying social synchronization.
  • Group-level circadian organization provides a more comprehensive understanding of clock function.

Conclusions:

  • Understanding socially synchronized circadian oscillators is essential for comprehending fitness in natural environments.
  • Integrating data from diverse model systems will advance the field of chronobiology.
  • Future research should focus on group-level analyses to reveal the full scope of circadian biology.