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    Genetic signatures through space, time and multiple disturbances in a ubiquitous brooding coral

    265332.pdf (1.719Mb)
    Access Status
    Open access
    Authors
    Underwood, J.
    Richards, Zoe
    Miller, K.
    Puotinen, M.
    Gilmour, J.
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Underwood, J. and Richards, Z. and Miller, K. and Puotinen, M. and Gilmour, J. 2018. Genetic signatures through space, time and multiple disturbances in a ubiquitous brooding coral. Molecular Ecology. 27 (7): pp. 1586-1602.
    Source Title
    Molecular Ecology
    DOI
    10.1111/mec.14559
    ISSN
    0962-1083
    School
    School of Molecular and Life Sciences (MLS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/LP160101508
    Remarks

    This is the peer reviewed version of the following article: Underwood, J. and Richards, Z. and Miller, K. and Puotinen, M. and Gilmour, J. 2018. Genetic signatures through space, time and multiple disturbances in a ubiquitous brooding coral. Molecular Ecology. 27 (7): pp. 1586-1602, which has been published in final form at 10.1111/mec.14559. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving at http://olabout.wiley.com/WileyCDA/Section/id-828039.html

    URI
    http://hdl.handle.net/20.500.11937/66728
    Collection
    • Curtin Research Publications
    Abstract

    The predominance of self-recruitment in many reef-building corals has fundamental and complex consequences for their genetic diversity, population persistence and responses to climate change. Knowledge of genetic structure over local scales needs to be placed within a broad spatial context, and also integrated with genetic monitoring through time to disentangle these consequences. Here, we examined patterns of genetic diversity over multiple spatio-temporal scales across tropical Australia in the ubiquitous brooding coral, Seriatopora hystrix. We also analysed complimentary environmental and demographic data to elucidate the seascape drivers of these patterns. Large genetic differences were detected between the east vs. west coasts of Australia. In northwest Australia, geographic differentiation dominated genetic structure over multiple scales. However, three sympatric lineages were detected at the largest offshore reef system (Scott Reef). Similar to the differences observed among putative species in eastern Australia, these lineages were associated with different levels of wave exposure. Local genetic structure within the Scott Reef system was relatively stable over 10 years, but temporal differences were observed that reflected small but important genetic changes over a few generations during recovery after severe bleaching. These results highlight the importance of self-recruitment together with occasional longer distance connectivity for the persistence of a metapopulation across spatially and temporally variable environments. Our multidimensional research provides a foundation for further long-term genetic monitoring to inform conservation strategies and highlights that sampling scales, ecological effects and cryptic diversity are important considerations to develop realistic understanding of the evolutionary resilience of corals.

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