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Collective motion diminishes, but variation between groups emerges, through time in fish shoals
Despite extensive interest in the dynamic interactions between individuals that drive collective motion in animal groups, the dynamics of collective motion over longer time frames are understudied. Using three-spined sticklebacks, Gasterosteus aculeatus, randomly assigned to 12 shoals of eight fish,...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8527212/ https://www.ncbi.nlm.nih.gov/pubmed/34703618 http://dx.doi.org/10.1098/rsos.210655 |
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author | MacGregor, Hannah E. A. Ioannou, Christos C. |
author_facet | MacGregor, Hannah E. A. Ioannou, Christos C. |
author_sort | MacGregor, Hannah E. A. |
collection | PubMed |
description | Despite extensive interest in the dynamic interactions between individuals that drive collective motion in animal groups, the dynamics of collective motion over longer time frames are understudied. Using three-spined sticklebacks, Gasterosteus aculeatus, randomly assigned to 12 shoals of eight fish, we tested how six key traits of collective motion changed over shorter (within trials) and longer (between days) timescales under controlled laboratory conditions. Over both timescales, groups became less social with reduced cohesion, polarization, group speed and information transfer. There was consistent inter-group variation (i.e. collective personality variation) for all collective motion parameters, but groups also differed in how their collective motion changed over days in their cohesion, polarization, group speed and information transfer. This magnified differences between groups, suggesting that over time the ‘typical’ collective motion cannot be easily characterized. Future studies are needed to understand whether such between-group differences in changes over time are adaptive and represent improvements in group performance or are suboptimal but represent a compromise between individuals in their preferences for the characteristics of collective behaviour. |
format | Online Article Text |
id | pubmed-8527212 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-85272122021-10-25 Collective motion diminishes, but variation between groups emerges, through time in fish shoals MacGregor, Hannah E. A. Ioannou, Christos C. R Soc Open Sci Organismal and Evolutionary Biology Despite extensive interest in the dynamic interactions between individuals that drive collective motion in animal groups, the dynamics of collective motion over longer time frames are understudied. Using three-spined sticklebacks, Gasterosteus aculeatus, randomly assigned to 12 shoals of eight fish, we tested how six key traits of collective motion changed over shorter (within trials) and longer (between days) timescales under controlled laboratory conditions. Over both timescales, groups became less social with reduced cohesion, polarization, group speed and information transfer. There was consistent inter-group variation (i.e. collective personality variation) for all collective motion parameters, but groups also differed in how their collective motion changed over days in their cohesion, polarization, group speed and information transfer. This magnified differences between groups, suggesting that over time the ‘typical’ collective motion cannot be easily characterized. Future studies are needed to understand whether such between-group differences in changes over time are adaptive and represent improvements in group performance or are suboptimal but represent a compromise between individuals in their preferences for the characteristics of collective behaviour. The Royal Society 2021-10-20 /pmc/articles/PMC8527212/ /pubmed/34703618 http://dx.doi.org/10.1098/rsos.210655 Text en © 2021 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Organismal and Evolutionary Biology MacGregor, Hannah E. A. Ioannou, Christos C. Collective motion diminishes, but variation between groups emerges, through time in fish shoals |
title | Collective motion diminishes, but variation between groups emerges, through time in fish shoals |
title_full | Collective motion diminishes, but variation between groups emerges, through time in fish shoals |
title_fullStr | Collective motion diminishes, but variation between groups emerges, through time in fish shoals |
title_full_unstemmed | Collective motion diminishes, but variation between groups emerges, through time in fish shoals |
title_short | Collective motion diminishes, but variation between groups emerges, through time in fish shoals |
title_sort | collective motion diminishes, but variation between groups emerges, through time in fish shoals |
topic | Organismal and Evolutionary Biology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8527212/ https://www.ncbi.nlm.nih.gov/pubmed/34703618 http://dx.doi.org/10.1098/rsos.210655 |
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