Video 1. Asocial population.

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DOI: 10.7554/eLife.10955.004

Responses of population of asocial individuals (points) and dynamic resource peak (resource value shown in grayscale; dark regions have high resource value, light regions have low resource value). Length of tail proportional to speed. Peak centroid moves according to 2D Brownian motion with drift vector $\alpha$ and standard deviation $\beta$ (see Materials and methods). In Videos 1–4, view is zoomed in to area surrounding moving resource peak (field of view is $50l_r\times 50l_r$, where $l_r$ is the length scale of repulsion; full environment is projected onto a torus with edge length $346l_r$). Behavioral parameters as follows: $C_r=1.1$, $C_a=1$, $l_r=1$, $l_a=7.5$, $\gamma =0.01$, $\tau =1$, $m=1$, $\eta =1$, ${\psi }_0=3$, ${\psi }_1=2.54$. Environmental parameters in Videos 1–4 are: $\rho =0.16$, $N=300$, $M=2$, ${\lambda }_0=10$, ${\lambda }_1=\sqrt{20}$, $\alpha =[0.06 0]$, $\beta =0.5$.

DOI: http://dx.doi.org/10.7554/eLife.10955.004