Female reproductive fluid evolves rapidly to favor conspecific sperm
Livia Pinzoni, Elisa Morbiato, Owen C. Dorsey, Johaira Hernandez Melo, Alessandro Devigili, Clelia Gasparini, Gil Guastoni Rosenthal
This study shows that female reproductive fluid in two swordtail species differentially mediates postmating discrimination against heterospecific and related sperm, contributing to reproductive isolation.
bioRxiv · May 16, 2026 · PreprintEvolutionary Biology