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Evolution and stability of altruist strategies in microbial games
Michigan State University, East Lansing, United States.ORCID iD: 0000-0002-4872-1961
2012 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 85, no 1, article id 011914Article in journal (Refereed) Published
Abstract [en]

When microbes compete for limited resources, they often engage in chemical warfare using bacterial toxins. This competition can be understood in terms of evolutionary game theory (EGT). We study the predictions of EGT for the bacterial "suicide bomber" game in terms of the phase portraits of population dynamics, for parameter combinations that cover all interesting games for two-players, and seven of the 38 possible phase portraits of the three-player game. We compare these predictions to simulations of these competitions in finite well-mixed populations, but also allowing for probabilistic rather than pure strategies, as well as Darwinian adaptation over tens of thousands of generations. We find that Darwinian evolution of probabilistic strategies stabilizes games of the rock-paper-scissors type that emerge for parameters describing realistic bacterial populations, and point to ways in which the population fixed point can be selected by changing those parameters. © 2012 American Physical Society.

Place, publisher, year, edition, pages
2012. Vol. 85, no 1, article id 011914
Keywords [en]
Bacterial population, Bacterial toxin, Darwinian evolution, Evolutionary game theory, Fixed points, Parameter combination, Phase portrait, Probabilistic strategy, Suicide bomber, Chemical warfare, Game theory, Forecasting
National Category
Bioinformatics and Systems Biology Evolutionary Biology
Identifiers
URN: urn:nbn:se:du-37193DOI: 10.1103/PhysRevE.85.011914Scopus ID: 2-s2.0-84856667656OAI: oai:DiVA.org:du-37193DiVA, id: diva2:1557633
Available from: 2021-05-26 Created: 2021-05-26 Last updated: 2021-05-26Bibliographically approved

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Hintze, Arend

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
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  • de-DE
  • en-GB
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  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • asciidoc
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