Secondary contact erodes Pleistocene diversification in a wide-ranging freshwater mussel (Quadrula).

ABSTRACT: The isolated river drainages of eastern North America serve as a natural laboratory to investigate the roles of allopatry and secondary contact in the evolutionary trajectories of recently diverged lineages. Drainage divides facilitate allopatric speciation, but due to their sensitivity to climatic and geomorphological changes, neighboring rivers frequently coalesce, creating recurrent opportunities of isolation and contact throughout the history of aquatic lineages. The freshwater mussel Quadrula quadrula is widely distributed across isolated rivers of eastern North America and possesses high phenotypic and molecular variation across its range. We integrate sequence data from three genomes, including female- and male-inherited mitochondrial markers and thousands of nuclear encoded SNPs wi

SUBMITTER: Keogh SM 

PROVIDER: S-EPMC11665498 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature