Ariane Le Gros
Anciens membres du laboratoire
Statut professionnel : Anciens membres de l'unité
- contemporary evolution
- invasive species
- population genetics
Recherche fondamentale et appliquée.
Thèmes de recherche
I work on contemporary evolution in response to sharp changes in environmental conditions. More specifically, I am interested in morphological evolution happening on short-time scales (a few generations) in invasive species introduced in new environments, and I am studying the respective roles of local adaptation and neutral evolutionary processes on this morphological evolution.
To investigate this, I work on two model species: the Ring-necked parakeet (Psittacula krameri) and the Red-whiskered bulbul (Pycnonotus jocosus). The RN parakeet is native to India and sub-Saharan Africa and the RW bulbul comes from south-eastern Asia. Each species was introduced in many locations (some of which sharing similar environmental conditions) during the 1970' which allows me to study morphological evolution in replicated conditions and thus to assess the role of adaptive versus random processes in the morphological changes we observe.
The methods I use are 1) phylogeography to identify the sources of the invasive populations, 2) morphometry to compare morphological evolution between the different pairs of source-invasive populations, and 3) population genetics to infer the demographic history of invasive populations and the importance of neutral evolution in these populations.
- LE GROS Ariane, Sarah Samadi, Dario Zuccon, Raphaël Cornette, Michael P. Braun, Juan-Carlos Senar, CLERGEAU Philippe (2016) Rapid morphological changes, admixture and invasive success in populations of Ring-necked parakeets (Psittacula krameri) established in Europe. Biological Invasions, in press.
- Antonia Liess, LE GROS Ariane, Anika Wegenhoff, Colin R. Townsend, Christoph D. Matthaei (2012) Landuse intensity in stream catchments affects the benthic food web: consequences for nutrient supply, periphyton C:nutrient ratios, and invertebrate richness and abundance. Freshwater Science, 31(3):813-824.
- LE GROS Ariane, Christine M. Stracey, Scott K. Robinson (2011) Associations between Northern mockingbirds and the parasite Philornis porteri in relation to urbanization. The Wilson Journal of Ornithology, 123(4):788-796.
Enseignement et pédagogie
Enseignement et pédagogie
I teach plant biology practical classes for bachelor students at Université Paris Diderot, France (64 hours per year).
2013: Supervision of S. Rivière (B. Sc. Biology), 3 months, Acquisition and analyses of morphometric data.
2012: Supervision of M. Bonade (B. Sc. Veterinary sciences), 2 months. Field work and literature review on sanitary risks associated to the invasive Ring-necked parakeet.
2011-2015: Ph.D., Department of Ecology and Biodiversity Management, and Dep. of Systematic and Evolution, Muséum National d’Histoire Naturelle (MNHN), Paris, France. Discipline: Ecology and Evolution.
2010-2011: M.Sc. “Interdisciplinary Approaches to Life Sciences” (AIV), Université Paris Descartes, Paris, France.
2009-2010: M.Sc. “Ecology, Biodiversity, Evolution” (EBE), Université Pierre et Marie Curie, Paris, France.
2006-2010: AgroParisTech, post-graduate Engineering school in life and environmental sciences, Paris, France.
Summer schools and workshops
Eco-Evo-Devo Post-Graduate Summer School (2014), Oxford Brookes University, UK. Practicals: QTL mapping, De novo assembly, micro-injections.
Software and Statistical Methods for Population Genetics (SSMPG 2013), Aussois, France. Practicals: selection scan, population structure, demographic inference
Morphometry and Evolution of Shapes Symposium (SMEF7, 2012), Université Lyon 1, France.
Analysis of morphometric data, Muséum National d’Histoire Naturelle (MNHN)
Critical Analysis of Research Articles, Centre for Interdisciplinary Research (CRI)
Scientific writing, Centre for Interdisciplinary Research (CRI)
Spatial analyses with ArcGIS, Université Paris Diderot
Statistics for Ecology, Muséum National d’Histoire Naturelle (MNHN)
Teaching Biology, Université Paris Diderot