Christos C. Ioannou

TL;DR: Comparing data from two-fish and three-fish shoals challenges the standard assumption that individual motion results from averaging responses to each neighbor considered separately and finds no evidence for explicit matching of body orientation.

TL;DR: It is revealed that this emergent problem solving is the predominant mechanism by which a mobile animal group responds to complex environmental gradients.

TL;DR: This work uses theory and experiment to demonstrate that, for a wide range of conditions, a strongly opinionated minority can dictate group choice, but the presence of uninformed individuals spontaneously inhibits this process, returning control to the numerical majority.

TL;DR: This work considers individual movement decisions to be based explicitly on the sensory information available to the organism, and finds that structural properties of visual interaction networks differ markedly from those of metric and topological counterparts, suggesting that previous assumptions may not appropriately reflect information flow in animal groups.

TL;DR: This study demonstrates that collective motion can be effectively mapped onto a set of order parameters describing the macroscopic group structure, revealing the existence of at least three dynamically-stable collective states; swarm, milling and polarized groups.