JAVAL Marion
marion.javal@ird.fr
+33 4 99 62 33 70

Marion JAVAL

Research Manager, IRD

Area(s)

My research focuses on understanding how insect populations respond to environmental changes, particularly in the context of human-induced disturbances (climate change, pesticides) and biological invasions.

I am developing an integrative approach combining laboratory experiments and field studies to identify the ecological and physiological mechanisms involved in the adaptive capacity, resilience or invasiveness of insect populations. My work is situated within a global change framework, integrating environmental variability, interactions between stressors, and responses at different scales, from the individual to the population.

The aim of this research is to better understand and anticipate the dynamics of insect populations in the face of anthropogenic pressures, in order to help predict their persistence, expansion or decline in changing ecosystems.

Last publications
Destour G., Kaufmann B., Centanni J., Abdelli Z., Doums C., Dumet A., Gippet J., Gomel L., Lucas A., Tauru H., Vergnes A., Blatrix R. & Javal M. 2025. Genetic tracing reveals the role of ornamental plant trade in the simultaneous spread of three invasive ant species in Western Europe. Peer Community Journal 5 : e67. (https://dx.doi.org/10.24072/pcjournal.577)
Dewaele J., Javal M., Pinchon A., Evrard D., Hautekèete N., Michez D. & Cuvillier V. 2025. Acute exposure to environmental doses of di-n-butyl phthalate but not di-2-ethylhexyl phthalate induces mortality in isolated and cold-stressed workers of Bombus terrestris L. (Hymenoptera: Apidae). Environmental Research 286 : 122836. (https://dx.doi.org/10.1016/j.envres.2025.122836)
Javal M., Ndiaye A., Loiseau A., Bocar B.A., Garba M., Brévault T. & Gauthier N. 2025. Tuta absoluta’s population genetic structure across Africa: Two well-delineated but weakly differentiated groups suggesting few introductions and significant gene flow. Agricultural and Forest Entomology 27 : 223-240. (https://dx.doi.org/10.1111/afe.12658)
Cui M., Roe A.D., Boyle B., Keena M., Wu Y., Braswell W.E., Smith M.T., Gasman B., Shi J., Javal M., Roux G., Turgeon J.J., Hamelin R. & Porth I. 2024. Tracking the North American Asian longhorned beetle invasion with genomics. Evolutionary Applications 17 : e70036. (https://dx.doi.org/10.1111/eva.70036)
Destour G., Blatrix R., Caries A., Genevet J., Kaufmann B., Lecoq B., Lucas A., Verlingue K., Vergnes A. & Javal M. 2024. Impact of temperature and season on ant foraging activity of two invasive species in a Mediterranean urban area. Ecological Entomology 49 : 673-681. (https://dx.doi.org/10.1111/een.13339)
Javal M., Terblanche J.S., Benoit L., Conlong D.E., Lloyd J.R., Smit C. & Chapuis M.-P. 2023. Does host plant drive variation in microbial gut communities in a recently shifted pest?. Microbial Ecology 86 : 636-646. (https://dx.doi.org/10.1007/s00248-022-02100-x)
Javal M., Terblanche J.S., Smit C. & Haran J. 2023. Comparative assessment of heat tolerance in weevils associated with a fire‐prone ecosystem. Ecological Entomology 48 : 240-250. (https://dx.doi.org/10.1111/een.13218)
Javal M., Terblanche J., Conlong D., Delahaye N., Grobbelaar E., Benoit L., Lopez-Vaamonde C. & Haran J. 2021. DNA barcoding for bio-surveillance of emerging pests and species identification in Afrotropical Prioninae (Coleoptera, Cerambycidae). Biodiversity Data Journal 9 : e64499. (https://dx.doi.org/10.3897/BDJ.9.e64499)