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SUMMARY:Regulation of Ant Foraging as a Closed-Loop Excitable System - Nao
 mi Ehrich Leonard\, Princeton University
DTSTART:20190509T130000Z
DTEND:20190509T140000Z
UID:TALK123811@talks.cam.ac.uk
CONTACT:Alberto Padoan
DESCRIPTION:I will present a model-based investigation into the collective
  behavior that allows colonies of desert harvester ants to regulate foragi
 ng in response to environmental conditions.  The model uses excitability d
 ynamics to represent response to interactions inside the nest and a random
  delay distribution to represent foraging time outside the nest. The model
  exhibits a critical “volatility” of available foragers above which th
 ere is sustained foraging and below which foraging stops. To explain how f
 oraging adjusts to temperature and humidity\, we propose that foragers mod
 ify their volatility after first exposure to the environment.  I will brie
 fly discuss of a study of contagion dynamics\, motivated by the foraging i
 nvestigation\, in which susceptibility to “infection” is modified afte
 r first exposure.
LOCATION:Cambridge University Engineering Department\, Lecture Theatre 6
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