Hybridization but minimal introgression: ecologically-based divergent selection maintains a steep hybrid zone in parapatric stickleback fish
Olivia Baebler, Quiterie Haenel, Krista B. Oke, Andrew P. Hendry, Daniel Berner
The paper investigates a steep hybrid zone between lake and stream stickleback ecotypes, finding that divergent ecological selection maintains reproductive isolation despite recent habitat contact.
Molecular Ecology · Aug 1, 2026Peer-reviewedEvolutionary Biology