Phylogenetic relationships among sea anemones (Cnidaria: Anthozoa: Actiniaria)

Molecular Phylogenetics and Evolution
Marymegan DalyE Rodríguez

Abstract

Sea anemones (order Actiniaria) are among the most diverse and successful members of the anthozoan subclass Hexacorallia, being found at all depths and latitudes and in all marine habitats. Members of this group exhibit the greatest variation in anatomy, biology, and life history in Hexacorallia, and lack any morphological synapomorphy. Nonetheless, previous molecular phylogenetic studies have found that Actiniaria is monophyletic with respect to other extant hexacorallians. However, relationships within Actiniaria have remained unresolved, as none of these earlier works have included sufficient taxon sampling to estimate relationships within Actiniaria. We have analyzed sequences from two mitochondrial and two nuclear markers for representatives of approximately half of the family-level diversity within the order, and present the first phylogenetic tree for Actiniaria. We concur with previous studies that have suggested that molecular evolution is unusually slow in this group. We determine that taxonomic groups based on the absence of features tend not to be recovered as monophyletic, but that at least some classical anatomical features define monophyletic groups.

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Citations

Jun 1, 2014·PloS One·Anita M NedosykoKaren Burke da Silva
Jul 25, 2009·BMC Genomics·Cécile SabouraultPaola Furla
Jun 25, 2015·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Jonathan FooxEstefanía Rodríguez
May 12, 2010·Molecular Phylogenetics and Evolution·Luciana C Gusmão, Marymegan Daly
Apr 7, 2010·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Ernesto M ArbeloaJosé I Carreto
Feb 5, 2010·Trends in Genetics : TIG·Sylvain ForêtDavid J Miller
Jul 31, 2013·The FEBS Journal·Diego J B OrtsJosé C de Freitas
May 10, 2016·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Lei Zhang, Qian Zhu
Mar 13, 2014·Molecular Phylogenetics and Evolution·Åse EmblemSteinar D Johansen
May 12, 2011·Integrative and Comparative Biology·Marymegan DalyEstefanía Rodríguez
Sep 17, 2020·Biology·Maria Giovanna ParisiMatteo Cammarata
Apr 5, 2020·Marine Drugs·Rocio K Finol-UrdanetaAhmed Al-Sabi
Jan 29, 2021·Systematic Biology·Catherine S McFaddenEstefanía Rodríguez
Jun 4, 2019·Molecular Phylogenetics and Evolution·Benjamin M TitusEstefanía Rodríguez

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