Testing Thirty Years of Hypotheses: Ancient Trout-Salmon Introgression and Limited Pre-Colonial Gene Flow Between Rainbow and Cutthroat Trout Shaped Pacific Salmonid Evolution
Ethan Tolman, Harrison Pardue, Gracie Castillo, Anna Eichert, James Holt, Dick Jordan, Emma Redman, Liam Williams, Anna Himler, Christoph Walser, Christopher D. Beatty, Anton Suvorov
This study tests hypotheses about ancient introgression and gene flow in Pacific salmonids, finding introgression between trout and salmon ancestors but not between trout lineages.
bioRxiv · Oct 16, 2026 · PreprintEvolutionary Biology