Standard game theory cannot describe microbial interactions mediated by diffusible molecules. Nevertheless, we show that one can still model microbial dynamics using game theory with parameters renormalized by diffusion. Contrary to expectations, greater sharing of metabolites reduces the strength of cooperation and leads to species extinction via a nonequilibrium phase transition. We report analytic results for the critical diffusivity and the length scale of species intermixing. We also show that fitness nonlinearities suppress mutualism and favor the species producing slower nutrients. PACS numbers: 87.23.Cc, 87.23.Kg, 87.15.Zg, 64.60.ah
ABSTRACT
PUBLICATION RECORD
- Publication year
2014
- Venue
bioRxiv
- Publication date
2014-12-22
- Fields of study
Biology, Medicine, Physics, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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