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Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
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Assessing Burrowing, Nest Construction, and Hoarding in Mice
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Collective ventilation in honeybee nests.

Jacob M Peters1, Orit Peleg2, L Mahadevan3

  • 11 Department of Organismic and Evolutionary Biology , Harvard University , Cambridge , MA 02138 , USA.

Journal of the Royal Society, Interface
|April 9, 2019
PubMed
Summary

Honeybees (Apis mellifera) use collective fanning behavior at nest entrances to regulate temperature. Bees self-organize into inflow and outflow groups, demonstrating emergent strategies for ventilation in fluctuating environments.

Keywords:
bee behaviourcollective behaviourventilation

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Area of Science:

  • Animal Behavior
  • Collective Intelligence
  • Thermoregulation

Background:

  • European honey bees (Apis mellifera) inhabit nests with limited passive ventilation.
  • Active nest ventilation is crucial when internal temperatures exceed thresholds.

Purpose of the Study:

  • To investigate the emergent ventilation strategies of honey bee colonies.
  • To understand the self-organization of fanning bees at nest entrances.
  • To correlate environmental factors with collective bee behavior.

Main Methods:

  • Observational analysis of fanning bee distribution and spatio-temporal patterns.
  • Development of a mathematical model simulating collective bee dynamics.
  • Correlation of air velocity and temperature with bee distribution.

Main Results:

  • Fanning bees self-organize into distinct inflow and outflow groups at large nest entrances.
  • Observed patterns correlate air velocity and temperature with bee distribution.
  • Model successfully recapitulates collective dynamics and predicts group stability.

Conclusions:

  • Honey bee colonies exhibit emergent ventilation strategies through self-organization.
  • Flow-mediated communication drives collective behavior for thermoregulation.
  • Fanning group dynamics are influenced by ambient temperature fluctuations.