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Rapid environmental change in games: complications and counter-intuitive outcomes

Human-induced rapid environmental change (HIREC) has recently led to alterations in the fitness and behavior of many organisms. Game theory is an important tool of behavioral ecology for analyzing evolutionary situations involving multiple individuals. However, game theory bypasses the details by wh...

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Autores principales: Trimmer, Pete C., Barrett, Brendan J., McElreath, Richard, Sih, Andrew
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6517380/
https://www.ncbi.nlm.nih.gov/pubmed/31089166
http://dx.doi.org/10.1038/s41598-019-43770-x
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author Trimmer, Pete C.
Barrett, Brendan J.
McElreath, Richard
Sih, Andrew
author_facet Trimmer, Pete C.
Barrett, Brendan J.
McElreath, Richard
Sih, Andrew
author_sort Trimmer, Pete C.
collection PubMed
description Human-induced rapid environmental change (HIREC) has recently led to alterations in the fitness and behavior of many organisms. Game theory is an important tool of behavioral ecology for analyzing evolutionary situations involving multiple individuals. However, game theory bypasses the details by which behavioral phenotypes are determined, taking the functional perspective straight from expected payoffs to predicted frequencies of behaviors. In contrast with optimization approaches, we identify that to use existing game theoretic models to predict HIREC effects, additional mechanistic details (or assumptions) will often be required. We illustrate this in relation to the hawk-dove game by showing that three different mechanisms, each of which support the same ESS prior to HIREC (fixed polymorphism, probabilistic choice, or cue dependency), can have a substantial effect on behavior (and success) following HIREC. Surprisingly, an increase in the value of resources can lead to a reduction in payoffs (and vice versa), both in the immediate- and long-term following HIREC. An increase in expected costs also increases expected payoffs. Along with these counter-intuitive findings, this work shows that simply understanding the behavioral payoffs of existing games is insufficient to make predictions about the effects of HIREC.
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spelling pubmed-65173802019-05-24 Rapid environmental change in games: complications and counter-intuitive outcomes Trimmer, Pete C. Barrett, Brendan J. McElreath, Richard Sih, Andrew Sci Rep Article Human-induced rapid environmental change (HIREC) has recently led to alterations in the fitness and behavior of many organisms. Game theory is an important tool of behavioral ecology for analyzing evolutionary situations involving multiple individuals. However, game theory bypasses the details by which behavioral phenotypes are determined, taking the functional perspective straight from expected payoffs to predicted frequencies of behaviors. In contrast with optimization approaches, we identify that to use existing game theoretic models to predict HIREC effects, additional mechanistic details (or assumptions) will often be required. We illustrate this in relation to the hawk-dove game by showing that three different mechanisms, each of which support the same ESS prior to HIREC (fixed polymorphism, probabilistic choice, or cue dependency), can have a substantial effect on behavior (and success) following HIREC. Surprisingly, an increase in the value of resources can lead to a reduction in payoffs (and vice versa), both in the immediate- and long-term following HIREC. An increase in expected costs also increases expected payoffs. Along with these counter-intuitive findings, this work shows that simply understanding the behavioral payoffs of existing games is insufficient to make predictions about the effects of HIREC. Nature Publishing Group UK 2019-05-14 /pmc/articles/PMC6517380/ /pubmed/31089166 http://dx.doi.org/10.1038/s41598-019-43770-x Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Trimmer, Pete C.
Barrett, Brendan J.
McElreath, Richard
Sih, Andrew
Rapid environmental change in games: complications and counter-intuitive outcomes
title Rapid environmental change in games: complications and counter-intuitive outcomes
title_full Rapid environmental change in games: complications and counter-intuitive outcomes
title_fullStr Rapid environmental change in games: complications and counter-intuitive outcomes
title_full_unstemmed Rapid environmental change in games: complications and counter-intuitive outcomes
title_short Rapid environmental change in games: complications and counter-intuitive outcomes
title_sort rapid environmental change in games: complications and counter-intuitive outcomes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6517380/
https://www.ncbi.nlm.nih.gov/pubmed/31089166
http://dx.doi.org/10.1038/s41598-019-43770-x
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