Phylogenomic Analyses Support Traditional Relationships within Cnidaria

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Issue Date
2015-10-14Author
Zapata, Felipe
Goetz, Freya E.
Smith, Stephen A.
Howison, Mark
Siebert, Stefan A.
Church, Samuel H.
Sanders, Steven M.
Ames, Cheryl Lewis
McFadden, Catherine S.
France, Scott C.
Daly, Marymegan
Collins, Allen G.
Haddock, Steven H. D.
Dunn, Casey W.
Cartwright, Paulyn
Publisher
Public Library of Science
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.
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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.
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Citation
Zapata, Felipe, Freya E. Goetz, Stephen A. Smith, Mark Howison, Stefan Siebert, Samuel Church, Steven M. Sanders, Cheryl Lewis Ames, Catherine S. Mcfadden, Scott C. France, Marymegan Daly, Allen G. Collins, Steven Hd Haddock, Casey Dunn, and Paulyn Cartwright. "Phylogenomic Analyses Support Traditional Relationships within Cnidaria." (2015): n. pag. doi:10.1371/journal.pone.0139068
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Except where otherwise noted, this item's license is described as: This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.