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Singular Perturbation Analysis of Travelling Waves for a Model in Phytopathology

Published online by Cambridge University Press:  15 May 2008

J. B. Burie
Affiliation:
UMR CNRS 5466, MAB & INRIA Futurs, Université Victor Segalen Bordeaux 2, 33076 Bordeaux, France
A. Calonnec
Affiliation:
INRA-CR de Bordeaux, UMR INRA-ENITA en Santé végétale, 33883 Villenave d'Ornon
A. Ducrot*
Affiliation:
UMR CNRS 5466, MAB & INRIA Futurs, Université Victor Segalen Bordeaux 2, 33076 Bordeaux, France
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Abstract

We investigate the structure oftravelling waves for a model of a fungal disease propagating overa vineyard. This model is based on a set of ODEs of the SIR-typecoupled with two reaction-diffusion equations describing thedispersal of the spores produced by the fungus inside and over thevineyard. An estimate of the biological parameters in the modelsuggests to use a singular perturbation analysis. It allows us tocompute the speed and the profile of the travelling waves. Theanalytical results are compared with numerical simulations.

Type
Research Article
Copyright
© EDP Sciences, 2006

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