High-predation habitats affect the social dynamics of collective exploration in a shoaling fish

Science Advances
Christos C IoannouColin J Torney

Abstract

Collective decisions play a major role in the benefits that animals gain from living in groups. Although the mechanisms of how groups collectively make decisions have been extensively researched, the response of within-group dynamics to ecological conditions is virtually unknown, despite adaptation to the environment being a cornerstone in biology. We investigate how within-group interactions during exploration of a novel environment are shaped by predation, a major influence on the behavior of prey species. We tested guppies (Poecilia reticulata) from rivers varying in predation risk under controlled laboratory conditions and find the first evidence of differences in group interactions between animals adapted to different levels of predation. Fish from high-predation habitats showed the strongest negative relationship between initiating movements and following others, which resulted in less variability in the total number of movements made between individuals. This relationship between initiating movements and following others was associated with differentiation into initiators and followers, which was only observed in fish from high-predation rivers. The differentiation occurred rapidly, as trials lasted 5 min, and was relate...Continue Reading

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Citations

Apr 4, 2019·PloS One·Andrias O O'ReillyClaudia Mettke-Hofmann
Apr 17, 2019·Proceedings of the National Academy of Sciences of the United States of America·Christos C IoannouJosh A Firth
Jul 18, 2019·Proceedings. Biological Sciences·Jesse Balaban-FeldZvika Abramsky
Sep 1, 2017·Proceedings. Biological Sciences·James E Herbert-ReadDavid J T Sumpter
Sep 29, 2017·Proceedings. Biological Sciences·James E Herbert-ReadChristos C Ioannou
Mar 21, 2019·Royal Society Open Science·Mike M WebsterKevin N Laland
Oct 15, 2019·Journal of Evolutionary Biology·Alberto Corral-LópezNiclas Kolm
Jan 9, 2020·American Journal of Primatology·Júlio César Bicca-MarquesGabriela Pacheco Hass
Oct 24, 2019·Journal of the Royal Society, Interface·Hangjian LingNicholas T Ouellette
Mar 28, 2018·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Peter A H WestleyDora Biro
Jul 18, 2020·Proceedings of the National Academy of Sciences of the United States of America·Mariana Rodriguez-SantiagoAlex Jordan
Nov 16, 2019·Nature Communications·Hangjian LingNicholas T Ouellette
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Jul 29, 2021·Proceedings. Biological Sciences·Roi HarelMargaret C Crofoot
Dec 12, 2021·Biological Reviews of the Cambridge Philosophical Society·Lizzy A GartlandChristos C Ioannou

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