3D INDIVIDUAL BASED MODEL FOR BACTERIA GROWTH AND SPATIAL INTERACTIONS: APPLICATION TO THE CASE OF LISTERIA MONOCYTOGENES AND CARNOBACTERIUM PISCICOLA
Résumé
By means of an interdisciplinary collaboration, we build a three dimensional individual-based model at the microscopic scale. This model is based on the cardinal model at the population scale, and aims at investigating the impact of spatialisation on the growth of bacterial colonies, in particular in the case of species in interaction. Our case of application is the influence of lactic acid bacteria on pathogens, which growth depends on pH evolution from lactic acid production and diffusion, according to carbohydrate concentration, temperature, water activity and ratio of both populations. We use our individual-based model to study and illustrate different and major effects of spatialisation on colonies growth. The last section presents some perspectives for the design of a continuous partial derivative equations-based companion model to our individual-based one.
Origine : Fichiers produits par l'(les) auteur(s)
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