Contemporary genetic structure reflects historical drainage isolation in an Australian snapping turtle, Elseya albagula

Erica V. Todd, David Blair, Lachlan Farrington, Nancy FitzSimmons, Arthur GEORGES, Colin J. Limpus, Dean R. Jerry

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    Effective spatial classification of freshwater biodiversity remains a worldwide conservation challenge. The isolating nature of catchment boundaries over evolutionary timescales makes them potentially important in defining natural units for biodiversity management. We sought to clarify biogeographical relationships amongst drainages within Australia’s biodiverse mid-eastern coastal region (Fitzroy, Burnett, and Mary Catchments) where freshwater communities face considerable urban pressure, using a locally endemic riverine specialist, the white-throated snapping turtle, Elseya albagula. Mitochondrial and nuclear microsatellite data sets were employed to investigate past and present influences on population connectivity and to identify units for management. Populations within catchments were largely well connected genetically. However, the Fitzroy Catchment contained a distinct genetic lineage, deeply divergent from a second lineage present across the Burnett and Mary Catchments. The two lineages can be considered evolutionarily significant units that reflect historical isolation of the Fitzroy and recent coalescence of the Burnett-Mary Catchments during lowered Pleistocene sea levels. Congruence with geological evidence and patterns reported for fish and macroinvertebrates supports a shared biogeographical history of a diverse regional biota. This work highlights the need for better spatial classification of freshwater biodiversity at local as well as regional scales, including recognition of potentially cryptic diversity amongst individual river drainages.
    Original languageEnglish
    Pages (from-to)200-214
    Number of pages15
    JournalZoological Journal of the Linnean Society
    Volume169
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Chelydridae
    turtle
    genetic structure
    drainage
    catchment
    biodiversity
    taxonomy
    coalescence
    macroinvertebrates
    macroinvertebrate
    sea level
    connectivity
    biota
    microsatellite repeats
    Pleistocene
    timescale
    rivers
    organisms
    fish
    history

    Cite this

    Todd, Erica V. ; Blair, David ; Farrington, Lachlan ; FitzSimmons, Nancy ; GEORGES, Arthur ; Limpus, Colin J. ; Jerry, Dean R. / Contemporary genetic structure reflects historical drainage isolation in an Australian snapping turtle, Elseya albagula. In: Zoological Journal of the Linnean Society. 2013 ; Vol. 169. pp. 200-214.
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    Contemporary genetic structure reflects historical drainage isolation in an Australian snapping turtle, Elseya albagula. / Todd, Erica V.; Blair, David; Farrington, Lachlan; FitzSimmons, Nancy; GEORGES, Arthur; Limpus, Colin J.; Jerry, Dean R.

    In: Zoological Journal of the Linnean Society, Vol. 169, 2013, p. 200-214.

    Research output: Contribution to journalArticle

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