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Many dynamical networks, such as the ones that produce the collective behavior of social insects, operate without any central control, instead arising from local interactions among individuals. A well-studied example is the formation of recruitment trails in ant colonies, but many ant species do not use pheromone trails. We present a model of the regulation(More)
Collective behavior is produced by interactions among individuals. Differences among groups in individual response to interactions can lead to ecologically important variation among groups in collective behavior. Here we examine variation among colonies in the foraging behavior of the harvester ant, Pogonomyrmex barbatus. Previous work shows how colonies(More)
Distributed networks, such as ant colonies and the Internet, operate without central control. Such systems are regulated using feedback based on local interactions among simple components. In this paper, we investigate the algorithms evolved by harvester ant colonies in Arizona to adapt the foraging rate to the available food on a given day. The connection(More)
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