We present a minimal model to describe the onset of collective motion seen when a population of locusts are placed in an annular arena. At low densities motion is disordered, while at high densities locusts march in a common direction, which may reverse during the experiment. The data is well-captured by an individual-based model, in which demographic noise leads to the observed density-dependent effects. By fitting the model parameters to equation-free coefficients, we give a quantitative comparison, showing time series, stationary distributions and the mean switching times between states.
|Number of pages||7|
|Journal||Physical Review E|
|Early online date||6 Nov 2015|
|Publication status||Published - 6 Nov 2015|
- Locusts, inherent, noise, coherence, swarm, motion, collective, switching
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- Department of Mathematical Sciences - Senior Lecturer
- EPSRC Centre for Doctoral Training in Statistical Applied Mathematics (SAMBa)
- Centre for Mathematical Biology - Co-Director
- Institute for Mathematical Innovation (IMI)
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