We are happy to announce that our PhD student Valentine Chapelle has successfully passed her public PhD defence at UNamur, the 14th of March 2023. She explained to a broad public the epigenetic and behavioral variability among four natural populations of mangrove rivulus, along a genetic diversity gradient. Thank you to all the jury members for their evaluation (Ryan Earley, Sofia Consuegra, Victoria Suarez-Ulloa, Alice Dennis, Caroline Nieberding). Good luck to Valentine for her future brillant career !