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  • Spatial patterns of genetic structure among populations of a stone-cased caddis (Trichoptera: Tasimiidae) in south-east Queensland, Australia

    Author(s)
    Schultheis, AS
    Hughes, JM
    Griffith University Author(s)
    Hughes, Jane M.
    Schultheis, Alicia S.
    Year published
    2005
    Metadata
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    Abstract
    1. Gene flow and dispersal among populations of a stone-cased caddis (Tasimiidae: Tasimia palpata) were estimated indirectly using a 460 bp region of the cytochrome oxidase I gene of mitochondrial DNA. 2. There was no significant differentiation at the largest spatial scale (between catchments) and no correlation between genetic distance and geographic distance. These results are consistent with widespread adult dispersal. 3. Conversely, significant genetic differentiation was detected at the smallest spatial scale examined (among reaches within streams). This pattern was primarily because of significant FST values in ...
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    1. Gene flow and dispersal among populations of a stone-cased caddis (Tasimiidae: Tasimia palpata) were estimated indirectly using a 460 bp region of the cytochrome oxidase I gene of mitochondrial DNA. 2. There was no significant differentiation at the largest spatial scale (between catchments) and no correlation between genetic distance and geographic distance. These results are consistent with widespread adult dispersal. 3. Conversely, significant genetic differentiation was detected at the smallest spatial scale examined (among reaches within streams). This pattern was primarily because of significant FST values in a single stream (Bundaroo Creek). 4. Bundaroo Creek also had the lowest mean number of haplotypes per population (n = 7) suggesting that a limited number of females may be responsible for recruitment at these sites. Significant FST's at the reach scale may be a result of this 'patchy' recruitment. However, additional evidence regarding the long-range dispersal ability and fecundity of T. palpata females is needed to test this hypothesis fully.
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    Journal Title
    Freshwater Biology
    Volume
    50
    Publisher URI
    https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2427.2005.01444.x
    DOI
    https://doi.org/10.1111/j.1365-2427.2005.01444.x
    Subject
    Environmental sciences
    Biological sciences
    Publication URI
    http://hdl.handle.net/10072/4361
    Collection
    • Journal articles

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