Stable species boundaries despite ten million years of hybridization in tropical eels
J. M. I. Barth, C. Gubili, M. Matschiner, O. K. Torresen, S. Watanabe, B. Egger, Y.-S. Han, E. Feunteun, R. Sommaruga, R. Jehle, R. Schabetsberger
The paper shows that seven eel species have remained distinct despite extensive hybridization over 10 million years, due to cytonuclear incompatibilities and hybrid breakdown.
bioRxiv · May 13, 2019Evolutionary Biology