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Virtual prey with Lévy motion are preferentially attacked by predatory fish

Of widespread interest in animal behavior and ecology is how animals search their environment for resources, and whether these search strategies are optimal. However, movement also affects predation risk through effects on encounter rates, the conspicuousness of prey, and the success of attacks. Her...

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Autores principales: Ioannou, Christos C, Carvalho, Luis Arrochela Braga, Budleigh, Chessy, Ruxton, Graeme D
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10332449/
https://www.ncbi.nlm.nih.gov/pubmed/37434636
http://dx.doi.org/10.1093/beheco/arad039
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author Ioannou, Christos C
Carvalho, Luis Arrochela Braga
Budleigh, Chessy
Ruxton, Graeme D
author_facet Ioannou, Christos C
Carvalho, Luis Arrochela Braga
Budleigh, Chessy
Ruxton, Graeme D
author_sort Ioannou, Christos C
collection PubMed
description Of widespread interest in animal behavior and ecology is how animals search their environment for resources, and whether these search strategies are optimal. However, movement also affects predation risk through effects on encounter rates, the conspicuousness of prey, and the success of attacks. Here, we use predatory fish attacking a simulation of virtual prey to test whether predation risk is associated with movement behavior. Despite often being demonstrated to be a more efficient strategy for finding resources such as food, we find that prey displaying Lévy motion are twice as likely to be targeted by predators than prey utilizing Brownian motion. This can be explained by the predators, at the moment of the attack, preferentially targeting prey that were moving with straighter trajectories rather than prey that were turning more. Our results emphasize that costs of predation risk need to be considered alongside the foraging benefits when comparing different movement strategies.
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spelling pubmed-103324492023-07-11 Virtual prey with Lévy motion are preferentially attacked by predatory fish Ioannou, Christos C Carvalho, Luis Arrochela Braga Budleigh, Chessy Ruxton, Graeme D Behav Ecol Original Articles Of widespread interest in animal behavior and ecology is how animals search their environment for resources, and whether these search strategies are optimal. However, movement also affects predation risk through effects on encounter rates, the conspicuousness of prey, and the success of attacks. Here, we use predatory fish attacking a simulation of virtual prey to test whether predation risk is associated with movement behavior. Despite often being demonstrated to be a more efficient strategy for finding resources such as food, we find that prey displaying Lévy motion are twice as likely to be targeted by predators than prey utilizing Brownian motion. This can be explained by the predators, at the moment of the attack, preferentially targeting prey that were moving with straighter trajectories rather than prey that were turning more. Our results emphasize that costs of predation risk need to be considered alongside the foraging benefits when comparing different movement strategies. Oxford University Press 2023-05-18 /pmc/articles/PMC10332449/ /pubmed/37434636 http://dx.doi.org/10.1093/beheco/arad039 Text en © The Author(s) 2023. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Ioannou, Christos C
Carvalho, Luis Arrochela Braga
Budleigh, Chessy
Ruxton, Graeme D
Virtual prey with Lévy motion are preferentially attacked by predatory fish
title Virtual prey with Lévy motion are preferentially attacked by predatory fish
title_full Virtual prey with Lévy motion are preferentially attacked by predatory fish
title_fullStr Virtual prey with Lévy motion are preferentially attacked by predatory fish
title_full_unstemmed Virtual prey with Lévy motion are preferentially attacked by predatory fish
title_short Virtual prey with Lévy motion are preferentially attacked by predatory fish
title_sort virtual prey with lévy motion are preferentially attacked by predatory fish
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10332449/
https://www.ncbi.nlm.nih.gov/pubmed/37434636
http://dx.doi.org/10.1093/beheco/arad039
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