Rock-scissors-paper game in a chaotic flow: The effect of dispersion on the cyclic competition of microorganisms

G. Károlyi, Zoltán Neufeld, I. Scheuring

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Laboratory experiments and numerical simulations have shown that the outcome of cyclic competition is significantly affected by the spatial distribution of the competitors. Short-range interaction and limited dispersion allows for coexistence of competing species that cannot coexist in a well-mixed environment. In order to elucidate the mechanisms that destroy species diversity we study the intermediate situation of imperfect mixing, typical in aquatic media, in a model of cyclic competition between toxin producing, sensitive and resistant phenotypes. It is found, that chaotic mixing, by changing the character of the spatial distribution, induces coherent oscillations in the populations. The magnitude of the oscillations increases with the strength of mixing, leading to the extinction of some species beyond a critical mixing rate. When mixing is non-uniform in space, coexistence can be sustained at much stronger mixing by the formation of partially isolated regions, that prevent global extinction. The heterogeneity of mixing may enable toxin producing and sensitive strains to coexist for very long time at strong mixing.

Original languageEnglish
Pages (from-to)12-20
Number of pages9
JournalJournal of Theoretical Biology
Volume236
Issue number1
DOIs
Publication statusPublished - Sep 7 2005

Fingerprint

Biological Extinction
Microorganisms
rocks
Rocks
Game
Phenotype
microorganisms
Population
Strong Mixing
Spatial Distribution
Coexistence
Extinction
Oscillation
Spatial distribution
oscillation
Competing Species
toxins
extinction
spatial distribution
Imperfect

Keywords

  • Chaotic-mixing
  • Coexistence
  • Non-transitive competition
  • Rock-scissors-paper game

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Rock-scissors-paper game in a chaotic flow : The effect of dispersion on the cyclic competition of microorganisms. / Károlyi, G.; Neufeld, Zoltán; Scheuring, I.

In: Journal of Theoretical Biology, Vol. 236, No. 1, 07.09.2005, p. 12-20.

Research output: Contribution to journalArticle

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