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  • The effect of landscape processes upon gene flow and genetic diversity in an Australian freshwater fish, Neosilurus hyrtlii

    Author(s)
    Huey, JA
    Baker, AM
    Hughes, JM
    Griffith University Author(s)
    Hughes, Jane M.
    Huey, Joel A.
    Year published
    2008
    Metadata
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    Abstract
    1. Flow regime and riverine architecture are two important landscape characteristics that influence genetic diversity and gene flow in riverine species. 2. Using population genetic markers (mtDNA, microsatellites and allozymes), this study aimed to investigate genetic diversity and gene flow in the freshwater fish, Neosilurus hyrtlii, across two major drainage divisions in northern and central Australia (the Gulf of Carpentaria and Lake Eyre basins). These basins lie adjacent to each other and differ in their hydrological inputs and riverine structure, providing an ideal opportunity to identify the impact of landscape ...
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    1. Flow regime and riverine architecture are two important landscape characteristics that influence genetic diversity and gene flow in riverine species. 2. Using population genetic markers (mtDNA, microsatellites and allozymes), this study aimed to investigate genetic diversity and gene flow in the freshwater fish, Neosilurus hyrtlii, across two major drainage divisions in northern and central Australia (the Gulf of Carpentaria and Lake Eyre basins). These basins lie adjacent to each other and differ in their hydrological inputs and riverine structure, providing an ideal opportunity to identify the impact of landscape processes upon population dynamics of freshwater fish. 3. Populations were strongly structured among basins, among catchments within basins and were weakly structured within catchments in the Lake Eyre Basin, providing support for the Stream Hierarchy Model. 4. Interestingly, mtDNA and microsatellite diversity was much higher in the Gulf of Carpentaria Basin compared to the Lake Eyre Basin. It was concluded that this difference was due to the extreme hydrological variability in this basin and boom-bust population
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    Journal Title
    Freshwater Biology Online
    Volume
    53
    DOI
    https://doi.org/10.1111/j.1365-2427.2008.01971.x
    Subject
    Environmental sciences
    Biological sciences
    Genetics not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/22481
    Collection
    • Journal articles

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