Evolution of sexual systems
Evolution of sexual systems and sex determination in deep-sea gastropods (Alviniconcha sp.)
Porteur(s) du projet
This project originates from the serendipitous discovery of a XY sex determination system in three closely related species of hydrothermal vent species, one of them unexpectedly featuring females with gonads more of less invaded by male tissue.
We are trying to understand if we are looking at andro-dioecy or ongoing transition between hermaphrodism and gonochory.
Participants
- Louise Mosset (M2 2026)
- Didier Jollivet, Jade Castel, Claire Daguin-Thiébaut, Stéphanie Ruault
- Florence Pradillon (IFREMER), co-PI
- Chong Chen (JAMSTEC, Japan)
Related publications
- Castel J, Pradillon F, Cueff V, Leger G, Daguin-Thiébaut C, Ruault S, Mary J, Hourdez S, Jollivet D and Broquet T (2024). Genetic sex determination in three closely related hydrothermal vent gastropods, one of which has intersex individuals. Journal of Evolutionary Biology 37: 779-794 (recommended by PCI Evol Biol).
- Castel J, Hourdez S, Pradillon F, Daguin-Thiébaut C, Ballenghien M, Ruault S, Corre E, Tran Lu Y A, Mary J, Gagnaire P-A, Bonhomme F, Breusing C, Broquet T and Jollivet D (2022). Inter-specific genetic exchange despite strong divergence in deep-sea hydrothermal vent gastropods of the genus Alviniconcha. Genes 13(6): 985.
Main Funding
- ANR Cerberus (dir. S. Hourdez & D. Jollivet, 2018-2023)
- Institut de l’Océan (2025)