Project

PDeeDyn

Predictive Demogenetics of the ecological and evolutionary Dynamics of freshwater and coastal populations

Timeframe : 2025 - 2028 Local Budget: 124 K€ Coordinator: Solenn Stoeckel, Eric Petit Contact: Solenn STOECKEL Keywords : Adaptation / Aire de répartition géographique / Connectivité / Cycle de vie / Dérive génétique / Dynamique des populations / Evolution adaptative / Fronts de colonisation / Gestion intégrée / Invasions biologiques / Sélection / Traits d’histoire de vie / Traits phénotypiques / Algues / Biofilms / Changement climatique / Communautés / Ecosystèmes / Macroinvertébrés / Poissons / Populations / Analyses de séries temporelles / Capteurs / Capture, échantillonnage et inventaire / Expérimentation ex-situ / Génétique mendélienne / Génétique quantitative / Modélisation mécaniste / Modélisation statistique

Research

Biological invasions are the subject of population monitoring by scientists and nature conservation managers. They provide an opportunity to understand the biological processes and mechanisms that enable rapid biological evolution in populations facing major and rapid environmental changes. By combining demographic and landscape genetics models, population demogenetics provides a suitable framework for analysing the monitoring of contemporary populations and for predicting their short- and medium-term futures within constrained spatio-temporal scenarios. This formalism allows for the full integration and exploitation of time-series data.

This project is based on a PhD thesis aimed at studying the methodological strengths and 

limitations of a mathematical demogenetic model for inferring the demographic, biological and eco-evolutionary processes occurring within these populations. This study will provide a better understanding of how repeated founder effects, the complex demography of invasion fronts, and the random variability in reproductive success can explain the emergence and maintenance of biological characteristics specific to populations at the periphery of their ranges. We will apply these analytical approaches to real-world monitoring of invasive populations in aquatic environments to infer their demographic and evolutionary dynamics. The knowledge gained will help inform proposed management actions and regulations.

Scientific partners

• UMR ECOBIOP (Ecologie Comportementale et Biologie des Populations de Poissons), St-Pée-sur-Nivelles, France
• UMR MIA (Mathématiques et Informatique Appliquées Paris Saclay), Saclay, France
• UMR IAM (Interactions Arbres-Microorganismes), Nancy, France
• Department of Ecology & Evolutionary Biology, University of Texas, Austin, USA
• Virginia Institute of Marine Science, Gloucester Point, USA

People involved

LEROY Jean, Doctorant(e) Email : jean.leroy@inrae.fr

PETIT Eric, Scientist Phone : + 33 2 23 48 70 36 Email : eric.petit@inrae.fr

STOECKEL Solenn, Chargé(e) de Recherche Email : solenn.stoeckel@inrae.fr

Funding and Support

INRAE