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Data from: Cryptic speciation reversal in the Etheostoma zonale (Teleostei: Percidae) species group, with an examination of the effect of recombination and introgression on species tree inference

Citation

Halas, Dominik; Simons, Andrew M. (2013), Data from: Cryptic speciation reversal in the Etheostoma zonale (Teleostei: Percidae) species group, with an examination of the effect of recombination and introgression on species tree inference, Dryad, Dataset, https://doi.org/10.5061/dryad.n7j8q

Abstract

Mitochondrial and nuclear introgression among closely related taxa can greatly complicate the process of determining their phylogenetic relationships. In the Central Highlands of North America, many fish taxa have undergone introgression; in this study, we demonstrate the existence of an unusual introgression event in the Etheostoma zonale species group. We used one mitochondrial and seven nuclear loci to determine the relationships of the taxa within the E. zonale group, and their degree of differentiation. We found evidence of multiple divergent populations within each species; much of the divergence within species has taken place during the Pleistocene. We also found evidence of a previously unknown cryptic species in the Upper Tennessee River which diverged from the remainder of the group during the Pliocene, and has undergone mitochondrial and nuclear introgression with E. zonale, in an apparent process of speciation reversal. We examined the effects that using varying types of recombination tests to eliminate the signal of recombination from nuclear loci would have on the phylogenetic placement of this introgressed lineage in our species tree analyses.

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Location

North Carolina
Pearl River
Missouri River
United States
Arkansas River
Tennessee
Kentucky
Minnesota
Pascagoula River
Arkansas
Mississippi River
Cumberland River
Pennsylvania
Mississippi
Ouachita River
Tennessee River
Illinois
Missouri
Louisiana
Ohio
Georgia
Ohio River
Virginia
Wisconsin