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  • Genomics reveals abundant speciation in the coral reef building alga Porolithon onkodes (Corallinales, Rhodophyta)

    Author(s)
    Gabrielson, Paul W
    Hughey, Jeffery R
    Diaz-Pulido, Guillermo
    Griffith University Author(s)
    Diaz-Pulido, Guillermo
    Year published
    2018
    Metadata
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    Abstract
    An essential suite of coral reef ecosystem engineers is coralline red algae. Among these, the smooth, encrusting Porolithon onkodes has historically been considered the most important and common reef building species worldwide. We assess P. onkodes biodiversity by performing a genomic analysis of the lectotype specimen collected in 1892 from the Tami Islands, Gulf of Huon, east of New Guinea. Comparisons of DNA sequences from the lectotype specimen to those deposited in GenBank and to newly generated sequences from both field‐collected and historical specimens demonstrate that at least 20 distinct species are passing under ...
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    An essential suite of coral reef ecosystem engineers is coralline red algae. Among these, the smooth, encrusting Porolithon onkodes has historically been considered the most important and common reef building species worldwide. We assess P. onkodes biodiversity by performing a genomic analysis of the lectotype specimen collected in 1892 from the Tami Islands, Gulf of Huon, east of New Guinea. Comparisons of DNA sequences from the lectotype specimen to those deposited in GenBank and to newly generated sequences from both field‐collected and historical specimens demonstrate that at least 20 distinct species are passing under P. onkodes. We hypothesize that there were multiple evolutionary drivers including ecophysiology, hydrodynamic regimes, and biotic interactions as well as historical biogeography, which resulted in this high diversity of smooth, encrusting Porolithon species throughout the tropics. Our results emphasize the need to document the biodiversity, ecophysiology, and habitats of these tropical, reef‐building algae in light of climate change and ocean acidification.
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    Journal Title
    Journal of Phycology
    Volume
    54
    Issue
    4
    DOI
    https://doi.org/10.1111/jpy.12761
    Subject
    Marine and Estuarine Ecology (incl. Marine Ichthyology)
    Plant Biology
    Fisheries Sciences
    Publication URI
    http://hdl.handle.net/10072/382826
    Collection
    • Journal articles

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