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Absence of population subdivision in the common shiner, Notropis cornutus (Cyprinidae)

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Starch gel electrophoresis of the common shiner, Notropis cornutus, was used to determine if this species exhibits genotypic structuring. Specimens were collected from seven widespread localities representing three branches of a single river drainage. χ2 tests revealed no significant heterogeneity of Est-A electromorphs within or between localities except where physical barriers prevent contact. Therefore, schooling behavior of N. cornutus is not associated with significant genotypic structuring of this species.

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Dowling, T.E., Moore, W.S. Absence of population subdivision in the common shiner, Notropis cornutus (Cyprinidae). Environ Biol Fish 15, 151–155 (1986). https://doi.org/10.1007/BF00005431

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