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    Comparative phylogeography of the ocean planet

    Access Status
    Open access via publisher
    Authors
    Bowen, B.
    Gaither, M.
    Di Battista, Joseph
    Iacchei, M.
    Andrews, K.
    Grant, W.
    Toonen, R.
    Briggs, J.
    Date
    2016
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Bowen, B. and Gaither, M. and Di Battista, J. and Iacchei, M. and Andrews, K. and Grant, W. and Toonen, R. et al. 2016. Comparative phylogeography of the ocean planet, In the Light of Evolution X: Comparative Phylogeography, pp. 7962-7969.
    Source Title
    Proceedings of the National Academy of Sciences of the United States of America
    Source Conference
    In the Light of Evolution X: Comparative Phylogeography
    DOI
    10.1073/pnas.1602404113
    Additional URLs
    http://www.pnas.org/content/113/29/7962.full.pdf
    ISSN
    0027-8424
    School
    Department of Environment and Agriculture
    URI
    http://hdl.handle.net/20.500.11937/56695
    Collection
    • Curtin Research Publications
    Abstract

    Understanding how geography, oceanography, and climate have ultimately shaped marine biodiversity requires aligning the distributions of genetic diversity across multiple taxa. Here, we examine phylogeographic partitions in the sea against a backdrop of biogeographic provinces defined by taxonomy, endemism, and species composition. The taxonomic identities used to define biogeographic provinces are routinely accompanied by diagnostic genetic differences between sister species, indicating interspecific concordance between biogeography and phylogeography. In cases where individual species are distributed across two or more biogeographic provinces, shifts in genotype frequencies often align with biogeographic boundaries, providing intraspecific concordance between biogeography and phylogeography. Here, we provide examples of comparative phylogeography from (i) tropical seas that host the highest marine biodiversity, (ii) temperate seas with high productivity but volatile coastlines, (iii) migratory marine fauna, and (iv) plankton that are the most abundant eukaryotes on earth. Tropical and temperate zones both show impacts of glacial cycles, the former primarily through changing sea levels, and the latter through coastal habitat disruption. The general concordance between biogeography and phylogeography indicates that the population-level genetic divergences observed between provinces are a starting point for macroevolutionary divergences between species. However, isolation between provinces does not account for all marine biodiversity; the remainder arises through alternative pathways, such as ecological speciation and parapatric (semiisolated) divergences within provinces and biodiversity hotspots.

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