A5066562423- Evolution and Genetic Dynamics
- Mathematical and Theoretical Epidemiology and Ecology Models
- Plant Virus Research Studies
- Evolutionary Game Theory and Cooperation
- Insect-Plant Interactions and Control
- Insect behavior and control techniques
- Ecology and Vegetation Dynamics Studies
- Nematode management and characterization studies
- Plant Parasitism and Resistance
- Advanced Control Systems Optimization
- Plant and animal studies
- Stability and Control of Uncertain Systems
- Adaptive Control of Nonlinear Systems
- Banana Cultivation and Research
- Animal Ecology and Behavior Studies
- Algal biology and biofuel production
- Forest Insect Ecology and Management
- Plant Pathogenic Bacteria Studies
- Plant Disease Resistance and Genetics
- Plant-Microbe Interactions and Immunity
- Insect Pest Control Strategies
- Microbial Metabolic Engineering and Bioproduction
- Insect Resistance and Genetics
- Control and Stability of Dynamical Systems
- Wheat and Barley Genetics and Pathology
Université Côte d'Azur
2016-2025
Institut national de recherche en informatique et en automatique
2012-2025
Research Centre Inria Sophia Antipolis - Méditerranée
2007-2024
Observatoire de la Côte d’Azur
2021-2024
Département Mathématiques et Informatique Appliquées
2018-2024
Centre National de la Recherche Scientifique
2019-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2021-2024
Institut de Biologie Valrose
2016-2023
Sorbonne Université
2019-2022
UCLouvain
1999-2003
Multiline and cultivar mixtures are highly effective methods for agroecological plant disease control. Priming-induced cross protection, occurring when plants challenged by avirulent pathogen genotypes resulting in increased resistance to subsequent infection virulent ones, is one critical key their lasting performance against polymorphic populations. Strikingly, this mechanism was until recently absent from mathematical models aiming at designing optimal host mixtures. We developed an...
Abstract Foragers exploiting heterogeneous habitats make strategic movement decisions to maximize fitness. Charnov’s Marginal Value Theorem (MVT) models the sequential visit of habitat patches and their distribution predict optimal time allocation strategy. However, it notoriously ignores effects predation risk. Brown’s giving-up density (GUD) theory is an alternative that includes more abstract does not have specificity or graphical appeal MVT. Here, we formally introduce rMVT (r stands for...
By combining high-throughput sequencing (HTS) with experimental evolution, we can observe the within-host dynamics of pathogen variants biomedical or ecological interest. We studied evolutionary five Potato virus Y (PVY) in 15 doubled-haploid lines pepper. All plants were inoculated same mixture and variant frequencies determined by HTS eight each pepper line at six sampling dates. developed a method for estimating intensities selection genetic drift multi-allelic Wright-Fisher model,...
In this paper, we study the effects of Beddington-DeAngelis interference and squabbling, respectively, on minimal rate predator release required to drive a pest population zero. A two-dimensional system coupled ordinary differential equations is considered, augmented by an impulsive component depicting periodic predators into system. This takes place independently detection pests in field. We establish existence pest-free solution driven releases, express global stability conditions for...
Abstract Growing genetically resistant plants allows pathogen populations to be controlled and reduces the use of pesticides. However, pathogens can quickly overcome such resistance. In this context, how we achieve sustainable crop protection? This crucial question has remained largely unanswered despite decades intense debate research effort. study, used a bibliographic analysis show that field resistance durability evolved into three subfields: (1) “plant breeding” (generating new genetic...
The Marginal Value Theorem (MVT) is a cornerstone of biological theory. It connects the quality and distribution patches in fragmented habitat to optimal time an individual should spend exploiting them, thus its rate movement. However, predictions regarding how alterations impact strategies have remained elusive, with heavy reliance on graphical arguments. Here we derive sensitivity realized fitness residence times general attributes, for homogeneous heterogeneous habitats, retaining level...
Plant qualitative resistances to viruses are natural exhaustible resources that can be impaired by the emergence of resistance-breaking (RB) virus variants. Mathematical modelling help determine optimal strategies for resistance durability a rational deployment in agroecosystems. Here, we propose an innovative approach, built up from our previous empirical studies, based on plant cultivars combining with quantitative narrowing population bottlenecks exerted during host-to-host transmission...
Abstract Understanding how often individuals should move when foraging over patchy habitats is a central question in ecology. By combining optimality and functional response theories, we show analytically the optimal movement rate varies with average resource level (enrichment) distribution (patch heterogeneity). We find that type of predicts effect enrichment homogeneous habitats: decrease for decelerating responses, but increase accelerating responses. An intermediate thus maximises...
This paper presents a saturated proportional controller that achieves depollution of wastewater in continuous anaerobic digester. goal is reached by defining region the state-space where achieved and forcing attractivity invariance this region. The control variable dilution rate controlled linear combination (Sλ) substrates concentrations, could be chemical oxygen demand or biological demand, depending on value λ. No measurement concentrations input flow required: only necessary Sλ.
Host mixtures are a promising method for agroecological plant disease control. Plant immunity is key to the success of host against polymorphic pathogen populations. This results from priming-induced cross-protection, whereby plants able resist infection by specific genotypes become more resistant other genotypes. Strikingly, this phenomenon was absent mathematical models aiming at designing mixtures. We developed model specifically explore how priming affects coexistence two in composed and...
Plugging is well known to be a major cause of instability in industrial cement mills. A simple nonlinear model able simulate the plugging phenomenon presented. It shown how robust controller can designed order fully prevent mill from plugging.
We address the question of optimization biomass long term productivity in framework microalgal production photobioreactors under influence day/night cycles. For that, we propose a simple bioreactor model accounting for light attenuation reactor due to density and obtain control law that optimizes over single day through application Pontryagin's maximum principle, with dilution rate being control. An important constraint on obtained solution is should be at same level beginning end so can...