Emergent periodicity in the collective synchronous flashing of fireflies

Author:

Sarfati RaphaëlORCID,Joshi Kunaal,Martin OwenORCID,Hayes Julie C.ORCID,Iyer-Biswas Srividya,Peleg OritORCID

Abstract

AbstractIn isolation from their peers,Photinus carolinusfireflies flash with no intrinsic period between successive bursts. Yet, when congregating into large mating swarms, these fireflies transition into predictability, synchronizing with their neighbors with a rhythmic periodicity. Here we propose a mechanism for emergence of synchrony and periodicity, and formulate the principle in a mathematical framework. Remarkably, with no fitting parameters, analytic predictions from this simple principle and framework agree strikingly well with data. Next, we add further sophistication to the framework using a computational approach featuring groups of random oscillators via integrate-and-fire interactions controlled by a tunable parameter. This agent-based framework ofP. carolinusfireflies interacting in swarms of increasing density also shows quantitatively similar phenomenology and reduces to the analytic framework in the appropriate limit of the tunable coupling strength. We discuss our findings and note that the resulting dynamics follow the style of a decentralized follow-the-leader synchronization, where any of the randomly flashing individuals may take the role of the leader of any subsequent synchronized flash burst.

Publisher

Cold Spring Harbor Laboratory

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