Publikation: Collective detection based on visual information in animal groups
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We investigate key principles underlying individual, and collective, visual detection of stimuli, and how this relates to the internal structure of groups. While the individual and collective detection principles are generally applicable, we employ a model experimental system of schooling golden shiner fish (Notemigonus crysoleucas) to relate theory directly to empirical data, using computational reconstruction of the visual fields of all individuals. This reveals how the external visual information available to each group member depends on the number of individuals in the group, the position within the group, and the location of the external visually detectable stimulus. We find that in small groups, individuals have detection capability in nearly all directions, while in large groups, occlusion by neighbours causes detection capability to vary with position within the group. To understand the principles that drive detection in groups, we formulate a simple, and generally applicable, model that captures how visual detection properties emerge due to geometric scaling of the space occupied by the group and occlusion caused by neighbours. We employ these insights to discuss principles that extend beyond our specific system, such as how collective detection depends on individual body shape, and the size and structure of the group.
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DAVIDSON, Jacob D., Matthew M. G. SOSNA, Colin R. TWOMEY, Vivek H. SRIDHAR, Simon P. LEBLANC, Iain D. COUZIN, 2021. Collective detection based on visual information in animal groups. In: Journal of the Royal Society Interface. Royal Society of London. 2021, 18(180), 20210142. ISSN 1742-5689. eISSN 1742-5662. Available under: doi: 10.1098/rsif.2021.0142BibTex
@article{Davidson2021-07Colle-54445, year={2021}, doi={10.1098/rsif.2021.0142}, title={Collective detection based on visual information in animal groups}, number={180}, volume={18}, issn={1742-5689}, journal={Journal of the Royal Society Interface}, author={Davidson, Jacob D. and Sosna, Matthew M. G. and Twomey, Colin R. and Sridhar, Vivek H. and Leblanc, Simon P. and Couzin, Iain D.}, note={Article Number: 20210142} }
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