Data from: Hybridization alters growth and migratory life history expression of native trout

Jeffrey T. Strait, Lisa A. Eby, Ryan P. Kovach, Clint C. Muhlfeld, Matthew C. Boyer, Stephen J. Amish, Seth Smith, Winsor H. Lowe & Gordon Luikart
Human-mediated hybridization threatens many native species, but the effects of introgressive hybridization on life history expression are rarely quantified, especially in vertebrates. We quantified the effects of non-native rainbow trout admixture on important life history traits including growth and partial migration behavior in three populations of westslope cutthroat trout over five years. Rainbow trout admixture was associated with increased summer growth rates in all populations, and decreased spring growth rates in two populations with cooler...
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