Temporary campus guidelines for any gathering other than academic classes, professional education programs (GTPE), or department meetings are available at specialevents.gatech.edu/fall-2020-events.

Wednesday, February 12 2020
12:00pm - 1:00pm
Howey - N110
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Collective Ecophysiology and Physics of Honeybee Swarms

School of Physics, Nonlinear Science and Mathematical Physics, Dr. Orit Peleg, Colorado University Boulder

Collective behavior of organisms creates environmental micro-niches that buffer them from environmental fluctuations e.g., temperature, humidity, mechanical perturbations, etc., thus coupling organismal physiology, environmental physics, and population ecology. This talk will focus on a combination of biological experiments, theory, and computation to understand how a collective of bees can integrate physical and behavioral cues to attain a non-equilibrium steady state that allows them to resist and respond to environmental fluctuations of forces and flows.

We analyze how bee clusters change their shape and connectivity and gain stability by spread-eagling themselves in response to mechanical perturbations. Similarly, we study how bees in a colony respond to environmental thermal perturbations by deploying a fanning strategy at the entrance that they use to create a forced ventilation stream that allows the bees to collectively maintain a constant hive temperature. When combined with quantitative analysis and computations in both systems, we integrate the sensing of the environmental cues (acceleration, temperature, flow) and convert them to behavioral outputs that allow the swarms to achieve a dynamic homeostasis. 

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