Both prey and predator features predict the individual predation risk and survival of schooling prey

Predation is one of the main evolutionary drivers of social grouping. While it is well appreciated that predation risk is likely not shared equally among individuals within groups, its detailed quantification has remained difficult due to the speed of attacks and the highly dynamic nature of collect...

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Main Authors: Jolle Wolter Jolles, Matthew MG Sosna, Geoffrey PF Mazué, Colin R Twomey, Joseph Bak-Coleman, Daniel I Rubenstein, Iain D Couzin
Format: Article
Language:English
Published: eLife Sciences Publications Ltd 2022-07-01
Series:eLife
Subjects:
Online Access:https://elifesciences.org/articles/76344
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author Jolle Wolter Jolles
Matthew MG Sosna
Geoffrey PF Mazué
Colin R Twomey
Joseph Bak-Coleman
Daniel I Rubenstein
Iain D Couzin
author_facet Jolle Wolter Jolles
Matthew MG Sosna
Geoffrey PF Mazué
Colin R Twomey
Joseph Bak-Coleman
Daniel I Rubenstein
Iain D Couzin
author_sort Jolle Wolter Jolles
collection DOAJ
description Predation is one of the main evolutionary drivers of social grouping. While it is well appreciated that predation risk is likely not shared equally among individuals within groups, its detailed quantification has remained difficult due to the speed of attacks and the highly dynamic nature of collective prey response. Here, using high-resolution tracking of solitary predators (Northern pike) hunting schooling fish (golden shiners), we not only provide insights into predator decision-making, but show which key spatial and kinematic features of predator and prey predict the risk of individuals to be targeted and to survive attacks. We found that pike tended to stealthily approach the largest groups, and were often already inside the school when launching their attack, making prey in this frontal ‘strike zone’ the most vulnerable to be targeted. From the prey’s perspective, those fish in central locations, but relatively far from, and less aligned with, neighbours, were most likely to be targeted. While the majority of attacks were successful (70%), targeted individuals that did manage to avoid being captured exhibited a higher maximum acceleration response just before the attack and were further away from the pike‘s head. Our results highlight the crucial interplay between predators’ attack strategy and response of prey underlying the predation risk within mobile animal groups.
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spelling doaj.art-e19a2191a4b1497984fa1125efeac8812022-12-22T03:50:43ZengeLife Sciences Publications LtdeLife2050-084X2022-07-011110.7554/eLife.76344Both prey and predator features predict the individual predation risk and survival of schooling preyJolle Wolter Jolles0https://orcid.org/0000-0001-9905-2633Matthew MG Sosna1Geoffrey PF Mazué2Colin R Twomey3Joseph Bak-Coleman4Daniel I Rubenstein5Iain D Couzin6https://orcid.org/0000-0001-8556-4558Department of Collective Behaviour, Max Planck Institute of Animal Behavior, Konstanz, Germany; Zukunftskolleg, University of Konstanz, Konstanz, Germany; Centre for Ecological Research and Forestry Applications (CREAF), Barcelona, SpainDepartment of Ecology and Evolutionary Biology, Princeton University, Princeton, United StatesSchool of Life and Environmental Sciences, University of Sydney, Sydney, AustraliaDepartment of Biology, University of Pennsylvania, Philadelphia, United StateseScience Institute, University of Washington, Seattle, United States; Center for an Informed Public, University of Washington, Seattle, United StatesDepartment of Ecology and Evolutionary Biology, Princeton University, Princeton, United StatesDepartment of Collective Behaviour, Max Planck Institute of Animal Behavior, Konstanz, Germany; Department of Biology, University of Konstanz, Konstanz, Germany; Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz, GermanyPredation is one of the main evolutionary drivers of social grouping. While it is well appreciated that predation risk is likely not shared equally among individuals within groups, its detailed quantification has remained difficult due to the speed of attacks and the highly dynamic nature of collective prey response. Here, using high-resolution tracking of solitary predators (Northern pike) hunting schooling fish (golden shiners), we not only provide insights into predator decision-making, but show which key spatial and kinematic features of predator and prey predict the risk of individuals to be targeted and to survive attacks. We found that pike tended to stealthily approach the largest groups, and were often already inside the school when launching their attack, making prey in this frontal ‘strike zone’ the most vulnerable to be targeted. From the prey’s perspective, those fish in central locations, but relatively far from, and less aligned with, neighbours, were most likely to be targeted. While the majority of attacks were successful (70%), targeted individuals that did manage to avoid being captured exhibited a higher maximum acceleration response just before the attack and were further away from the pike‘s head. Our results highlight the crucial interplay between predators’ attack strategy and response of prey underlying the predation risk within mobile animal groups.https://elifesciences.org/articles/76344predationcollective behaviourgroupingpikegolden shinerpredator-prey
spellingShingle Jolle Wolter Jolles
Matthew MG Sosna
Geoffrey PF Mazué
Colin R Twomey
Joseph Bak-Coleman
Daniel I Rubenstein
Iain D Couzin
Both prey and predator features predict the individual predation risk and survival of schooling prey
eLife
predation
collective behaviour
grouping
pike
golden shiner
predator-prey
title Both prey and predator features predict the individual predation risk and survival of schooling prey
title_full Both prey and predator features predict the individual predation risk and survival of schooling prey
title_fullStr Both prey and predator features predict the individual predation risk and survival of schooling prey
title_full_unstemmed Both prey and predator features predict the individual predation risk and survival of schooling prey
title_short Both prey and predator features predict the individual predation risk and survival of schooling prey
title_sort both prey and predator features predict the individual predation risk and survival of schooling prey
topic predation
collective behaviour
grouping
pike
golden shiner
predator-prey
url https://elifesciences.org/articles/76344
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