Temporal niche differentiation of parasites sharing the same plant host: oak powdery mildew as a case study
BISSON, Anne
Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie [MISTEA]
Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
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Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie [MISTEA]
Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
BISSON, Anne
Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie [MISTEA]
Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie [MISTEA]
Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes [UMR Eco&Sols]
MAILLERET, Ludovic
Biological control of artificial ecosystems [BIOCORE]
Institut Sophia Agrobiotech [ISA]
< Reduce
Biological control of artificial ecosystems [BIOCORE]
Institut Sophia Agrobiotech [ISA]
Language
en
Article de revue
This item was published in
Ecosphere. 2016-11, vol. 7, n° 11, p. e01517
Ecological Society of America
English Abstract
Plant diseases are often caused by complexes of closely related parasite species. The coexistence of species sharing the same niche challenges the competitive exclusion principle. Here, we performed the mathematical ...Read more >
Plant diseases are often caused by complexes of closely related parasite species. The coexistence of species sharing the same niche challenges the competitive exclusion principle. Here, we performed the mathematical analysis of a generic model of sibling parasite species coexistence based on seasonality. We showed that coexistence through temporal niche partitioning is biologically plausible as it occurred in a significant part of the parameter space of the model. Moreover, the reversal of species relative frequencies (i.e., the most frequent species at the beginning of the season becoming the last frequent at the end) can occur without compromising the long-term coexistence of the two species. We provided data showing that this reversal pattern does repeat over years in the case of two sibling species responsible for oak powdery mildew (Erysiphe alphitoides and Erysiphe quercicola) in Europe. Last, the model was fitted to the data and satisfactorily described the population dynamics of oak powdery mildew species. The seasonal succession of these two plant pathogen species provides one of the few examples of coexistence by temporal niche partitioning at the scale of the season caused by exploitative competition. We discuss whether evolutionary branching may have led to temporal niche differentiation in this system.Read less <
English Keywords
epidemiology
seasonality
coexistence
pathogen
trade-off
semidiscrete model
ANR Project
Une approche basée sur les traits d'histoire de vie des champignons phytopathogènes pour faire le lien entre fitness individuelle et stratégies écologiques. - ANR-13-BSV7-0011
Origin
Hal imported