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Phylogenomic Analyses Support Traditional Relationships within Cnidaria

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Cartwright, Paulyn  Search this
Haddock, Steven H. D.  Search this
France, Scott C.  Search this
Ames, Cheryl Lewis  Search this
Church, Samuel H.  Search this
Dunn, Casey W.  Search this
Goetz, Freya E.  Search this
Siebert, Stefan  Search this
Zapata, Felipe  Search this
Daly, Marymegan  Search this
Howison, Mark  Search this
McFadden, Catherine S.  Search this
Sanders, Steven M.  Search this
Smith, Stephen A.  Search this
Collins, Allen Gilbert  Search this
Object Type:
Smithsonian staff publication
Electronic document
Cnidaria, the sister group to Bilateria, is a highly diverse group of animals in terms of morphology, lifecycles, ecology, and development. How this diversity originated and evolved is not well understood because phylogenetic relationships among major cnidarian lineages are unclear, and recent studies present contrasting phylogenetic hypotheses. Here, we use transcriptome data from 15 newly-sequenced species in combination with 26 publicly available genomes and transcriptomes to assess phylogenetic relationships among major cnidarian lineages. Phylogenetic analyses using different partition schemes and models of molecular evolution, as well as topology tests for alternative phylogenetic relationships, support the monophyly of Medusozoa, Anthozoa, Octocorallia, Hydrozoa, and a clade consisting of Staurozoa, Cubozoa, and Scyphozoa. Support for the monophyly of Hexacorallia is weak due to the equivocal position of Ceriantharia. Taken together, these results further resolve deep cnidarian relationships, largely support traditional phylogenetic views on relationships, and provide a historical framework for studying the evolutionary processes involved in one of the most ancient animal radiations.
Zapata, Felipe, Goetz, Freya E., Smith, Stephen A., Howison, Mark, Siebert, Stefan, Church, Samuel H., Sanders, Steven M., Ames, Cheryl Lewis, McFadden, Catherine S., France, Scott C., Daly, Marymegan, Collins, Allen Gilbert, Haddock, Steven H. D., Dunn, Casey W. and Cartwright, Paulyn. 2015. Phylogenomic Analyses Support Traditional Relationships within Cnidaria. <i>PloS One<i>, 10(10) doi:10.1371/journal.pone.0139068
Invertebrates  Search this
Animals  Search this
Zoology  Search this
Natural History  Search this
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Invertebrate Zoology
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Smithsonian Libraries