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A structured-population model of Proteus mirabilis swarm-colony development

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Abstract

In this paper we present continuous age- and space-structured models and numerical computations of Proteus mirabilis swarm-colony development. We base the mathematical representation of the cell-cycle dynamics of Proteus mirabilis on those developed by Esipov and Shapiro, which are the best understood aspects of the system, and we make minimum assumptions about less-understood mechanisms, such as precise forms of the spatial diffusion. The models in this paper have explicit age-structure and, when solved numerically, display both the temporal and spatial regularity seen in experiments, whereas the Esipov and Shapiro model, when solved accurately, shows only the temporal regularity.

The composite hyperbolic-parabolic partial differential equations used to model Proteus mirabilis swarm-colony development are relevant to other biological systems where the spatial dynamics depend on local physiological structure. We use computational methods designed for such systems, with known convergence properties, to obtain the numerical results presented in this paper.

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  1. Department of Mathematics, Southern Methodist University, Dallas, TX, 75205, USA

    Bruce P. Ayati

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Ayati, B. A structured-population model of Proteus mirabilis swarm-colony development. J. Math. Biol. 52, 93–114 (2006). https://doi.org/10.1007/s00285-005-0345-3

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