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Founding population size of an aquatic invasive species

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Abstract

Non-native species of fish threaten native fishes throughout North America, and in the Rocky Mountains, introduced populations of lake trout threaten native populations of bull trout. Effective management of lake trout and other exotic species require understanding the dynamics of invasion in order to either suppress non-native populations or to prevent their spread. In this study, we used microsatellite genetic data to estimate the number of lake trout that invaded a population of bull trout in Swan Lake, MT. Examination of genetic diversity and allele frequencies within the Swan Lake populations showed that most of the genes in the lake trout population are descended from two founders. This emphasizes the importance of preventing even a few lake trout from colonizing new territory.

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Acknowledgments

Major funding for this work was provided by Montana Fish Wildlife and Parks. Partial funding was provided by the National Science Foundation (DEB 0717456). We thank two anonymous reviewers for comments that improved this manuscript. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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Authors and Affiliations

  1. Department of Ecology, Montana State University, 310 Lewis Hall, Bozeman, MT, 59717, USA

    Steven T. Kalinowski & Benjamin Cox

  2. U. S. Geological Survey, Northern Rocky Mountain Science Center, Glacier National Park, West Glacier, MT, 59936, USA

    Clint C. Muhlfeld

  3. U. S. Geological Survey, Montana Cooperative Fishery Research Unit, Montana State University, 301 Lewis Hall, Bozeman, Montana, 59717, USA

    Christopher S. Guy

Authors
  1. Steven T. Kalinowski
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  2. Clint C. Muhlfeld
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  3. Christopher S. Guy
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  4. Benjamin Cox
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Correspondence to Steven T. Kalinowski.

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Kalinowski, S.T., Muhlfeld, C.C., Guy, C.S. et al. Founding population size of an aquatic invasive species. Conserv Genet 11, 2049–2053 (2010). https://doi.org/10.1007/s10592-009-0041-8

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  • DOI: https://doi.org/10.1007/s10592-009-0041-8

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