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Pleistocene speciation and glacial refugia in the Gilt Darter (Percidae: Percina evides) species complex.

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Title: Pleistocene speciation and glacial refugia in the Gilt Darter (Percidae: Percina evides) species complex.
Authors: Wood, Julia E1 (AUTHOR), Taylor, Adam1 (AUTHOR), Kim, Daemin2 (AUTHOR), Stokes, Maya F3 (AUTHOR), Near, Thomas J1 (AUTHOR)
Source: Evolution. Dec2025, Vol. 79 Issue 12, p2846-2859. 14p.
Subjects: Pleistocene Epoch, Genetic speciation, Phylogeography, Freshwater biodiversity, Glacial climates, Freshwater fishes, Physiographic provinces
Geographic Terms: North America
Abstract: Among temperate regions of the world, freshwater fish species richness is highest in the Central Highlands of eastern North America. Historical biogeographic and phylogeographic researchers have investigated mechanisms driving this exceptional diversity, yet the role of major climatic events, like Pleistocene glaciation, is incompletely characterized. In this study, we analyze genomic DNA sequence data sampled from populations of the widely distributed Gilt Darter, Percina evides , to reconstruct pre-glacial drainage patterns and assess the impact of Pleistocene glaciation on generating the high species diversity of eastern North American freshwater fishes. Phylogenomics, population genomic analyses, and evaluation of morphology delimit 5 species currently classified as P. evides. These species likely diverged via allopatric speciation among the disjunct regions of the Central Highlands driven by the onset of Pleistocene glaciation. Divergence times among newly delimited species of the Gilt Darter complex are congruent with the onset of glaciation, periods of river incision and aggradation, and river network rearrangement. The discovery of new species in the P. evides complex and reconstruction of the timing of their diversification provide insight into the role that Pleistocene glaciation and glacial refugia contributed to the remarkable temperate freshwater biodiversity hotspot of the Central Highlands. [ABSTRACT FROM AUTHOR]
Copyright of Evolution is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Pleistocene speciation and glacial refugia in the Gilt Darter (Percidae: Percina evides) species complex.
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  Data: <searchLink fieldCode="JN" term="%22Evolution%22">Evolution</searchLink>. Dec2025, Vol. 79 Issue 12, p2846-2859. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Pleistocene+Epoch%22">Pleistocene Epoch</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+speciation%22">Genetic speciation</searchLink><br /><searchLink fieldCode="DE" term="%22Phylogeography%22">Phylogeography</searchLink><br /><searchLink fieldCode="DE" term="%22Freshwater+biodiversity%22">Freshwater biodiversity</searchLink><br /><searchLink fieldCode="DE" term="%22Glacial+climates%22">Glacial climates</searchLink><br /><searchLink fieldCode="DE" term="%22Freshwater+fishes%22">Freshwater fishes</searchLink><br /><searchLink fieldCode="DE" term="%22Physiographic+provinces%22">Physiographic provinces</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22North+America%22">North America</searchLink>
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  Data: Among temperate regions of the world, freshwater fish species richness is highest in the Central Highlands of eastern North America. Historical biogeographic and phylogeographic researchers have investigated mechanisms driving this exceptional diversity, yet the role of major climatic events, like Pleistocene glaciation, is incompletely characterized. In this study, we analyze genomic DNA sequence data sampled from populations of the widely distributed Gilt Darter, Percina evides , to reconstruct pre-glacial drainage patterns and assess the impact of Pleistocene glaciation on generating the high species diversity of eastern North American freshwater fishes. Phylogenomics, population genomic analyses, and evaluation of morphology delimit 5 species currently classified as P. evides. These species likely diverged via allopatric speciation among the disjunct regions of the Central Highlands driven by the onset of Pleistocene glaciation. Divergence times among newly delimited species of the Gilt Darter complex are congruent with the onset of glaciation, periods of river incision and aggradation, and river network rearrangement. The discovery of new species in the P. evides complex and reconstruction of the timing of their diversification provide insight into the role that Pleistocene glaciation and glacial refugia contributed to the remarkable temperate freshwater biodiversity hotspot of the Central Highlands. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Evolution is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1093/evolut/qpaf204
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      – Code: eng
        Text: English
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        PageCount: 14
        StartPage: 2846
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      – SubjectFull: Pleistocene Epoch
        Type: general
      – SubjectFull: Genetic speciation
        Type: general
      – SubjectFull: Phylogeography
        Type: general
      – SubjectFull: Freshwater biodiversity
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      – SubjectFull: Glacial climates
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      – SubjectFull: Freshwater fishes
        Type: general
      – SubjectFull: Physiographic provinces
        Type: general
      – SubjectFull: North America
        Type: general
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      – TitleFull: Pleistocene speciation and glacial refugia in the Gilt Darter (Percidae: Percina evides) species complex.
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            NameFull: Taylor, Adam
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            NameFull: Kim, Daemin
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              M: 12
              Text: Dec2025
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              Y: 2025
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