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Digest: Ecology shapes divergence during allopatric speciation in riverine fishes.

Evolution; international journal of organic evolution - 13 May 2026

Delmondes Pablo Henrique, Magalhães de Oliveira Hernani Fernandes, Domingos Fabricius Maia Chaves Bicalho, da Silva Joaquim Manoel

Abstract excerpt

Allopatric speciation in riverine fishes is often assumed to be ecologically neutral, with divergence driven primarily by geographic isolation and genetic drift. However, recent work on darters from the Central Highlands of the United States reveals that ecological divergence during allopatry is highly variable and context-dependent. By integrating phylogenomics, morphology, diet, and environmental data, Stokes...

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PMID: 41874423
DOI: 10.1093/evolut/qpag051

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