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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Biodiversa BioRodDis



Nathalie CHARBONNEL (BioRodDis coordinator)

Senior researcher in evolutionary ecology of host-parasite interactions


Nathalie Charbonnel develops research in disease ecology. She studies the interactions between rodents and pathogens in the context of rodent-borne zoonoses, in particular (re-)emerging ones. She aims at analysing the spatio-temporal variability of these interactions and at deciphering the ecological and evolutionary (neutral and adaptive) processes underlying the patterns observed in natural populations. She is particularly interested in studying the heterogeneity of rodents’ immune responses, using phenotypic and genomic approaches. As such, she explores the impact of immunity, co-infections and microbial flora on the susceptibility of rodents to certain pathogens from genetic (immunogenetics) and functional (immunoecology, parasitology) points of view.

Guillaume CASTEL

Researcher in virology


Guillaume Castel analyzes the diversity of hantaviruses and the evolutionary processes that shape it using high-throughput sequencing (HBS), which provides access to numerous viral sequences. He uses phylogenic and phylogeographic approaches (link between the evolution of viruses, the origin and spread of epidemics and modes of transmission). He has specialised in the Puumala virus which is hosted by the bank vole and causes 50 and 200 Nephropathia Epidemica cases a year in humans. Its aim is to characterize the distribution and genetic diversity of the virus and to identify the biological and/or environmental factors that influence its evolution.


Researcher in microbiology

Romain Gallet develops research on the ecology and evolution of pathogenic microorganisms, whether bacterial, viral or fungal. His main  topics are: antagonistic coevolution, experimental evolution, adaptation of microorganisms to biotic and abiotic variables, and the study of microbiota.

Maxime GALAN

Molecular engineer


Maxime Galan develops and implements molecular strategies to study the genetic variability of natural populations (vertebrates and associated pathogens or prey). These methods concern the characterization of nucleic sequences, genotypes or gene expression levels of molecular markers, at the scale of a few genes up to the genome/transcriptome. In particular, they make use of new generation sequencing technologies and their applications (metabarcoding, 16S rRNA amplicon sequencing, RADseq, Genotyping By Sequencing, RNAseq).


Data and fieldwork technician


Julien Pradel has a strong expertise in rodent trapping, and he is responsible for the traceability of samples, GPS coordinates, morphometric and environmental data, making all data FAIR (Findable, Accessible, Interoperable, Reusable). He is also at the core of the interactions with all stakeholders in the field.

Sylvain PIRY

Data management engineer


Sylvain Piry develops new methods in the field of Landscape Genetics in order to assess the influence of landscape on gene-flow and populations structure. He partly works in Avignon in plants pathology. He also developed methods for analysis of high-throughput sequenced amplicons in various research fields (eDNA for diets studies, plant or animal viruses characterization). He developed the database for the CBGP rodents collection and another one for plant pathogens in Avignon. He built the database and interface for articles management and reviews for all the PeerCommunityIn projects (see

Undergraduate students

Ferrero Julien-2021-Composition and diversity of rodent gut microbiome in two urban parks (Lyon, France).