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Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution

Siphonophores are a diverse group of hydrozoans (Cnidaria) that are found at most depths of the ocean - from the surface, like the familiar Portuguese man of war, to the deep sea. They play important roles in ocean ecosystems, and are among the most abundant gelatinous predators. A previous phylogen...

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Autores principales: Munro, Catriona, Siebert, Stefan, Zapata, Felipe, Howison, Mark, Damian-Serrano, Alejandro, Church, Samuel H., Goetz, Freya E., Pugh, Philip R., Haddock, Steven H.D., Dunn, Casey W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6064665/
https://www.ncbi.nlm.nih.gov/pubmed/29940256
http://dx.doi.org/10.1016/j.ympev.2018.06.030
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author Munro, Catriona
Siebert, Stefan
Zapata, Felipe
Howison, Mark
Damian-Serrano, Alejandro
Church, Samuel H.
Goetz, Freya E.
Pugh, Philip R.
Haddock, Steven H.D.
Dunn, Casey W.
author_facet Munro, Catriona
Siebert, Stefan
Zapata, Felipe
Howison, Mark
Damian-Serrano, Alejandro
Church, Samuel H.
Goetz, Freya E.
Pugh, Philip R.
Haddock, Steven H.D.
Dunn, Casey W.
author_sort Munro, Catriona
collection PubMed
description Siphonophores are a diverse group of hydrozoans (Cnidaria) that are found at most depths of the ocean - from the surface, like the familiar Portuguese man of war, to the deep sea. They play important roles in ocean ecosystems, and are among the most abundant gelatinous predators. A previous phylogenetic study based on two ribosomal RNA genes provided insight into the internal relationships between major siphonophore groups. There was, however, little support for many deep relationships within the clade Codonophora. Here, we present a new siphonophore phylogeny based on new transcriptome data from 29 siphonophore species analyzed in combination with 14 publicly available genomic and transcriptomic datasets. We use this new phylogeny to reconstruct several traits that are central to siphonophore biology, including sexual system (monoecy vs. dioecy), gain and loss of zooid types, life history traits, and habitat. The phylogenetic relationships in this study are largely consistent with the previous phylogeny, but we find strong support for new clades within Codonophora that were previously unresolved. These results have important implications for trait evolution within Siphonophora, including favoring the hypothesis that monoecy arose at least twice.
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spelling pubmed-60646652019-10-01 Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution Munro, Catriona Siebert, Stefan Zapata, Felipe Howison, Mark Damian-Serrano, Alejandro Church, Samuel H. Goetz, Freya E. Pugh, Philip R. Haddock, Steven H.D. Dunn, Casey W. Mol Phylogenet Evol Article Siphonophores are a diverse group of hydrozoans (Cnidaria) that are found at most depths of the ocean - from the surface, like the familiar Portuguese man of war, to the deep sea. They play important roles in ocean ecosystems, and are among the most abundant gelatinous predators. A previous phylogenetic study based on two ribosomal RNA genes provided insight into the internal relationships between major siphonophore groups. There was, however, little support for many deep relationships within the clade Codonophora. Here, we present a new siphonophore phylogeny based on new transcriptome data from 29 siphonophore species analyzed in combination with 14 publicly available genomic and transcriptomic datasets. We use this new phylogeny to reconstruct several traits that are central to siphonophore biology, including sexual system (monoecy vs. dioecy), gain and loss of zooid types, life history traits, and habitat. The phylogenetic relationships in this study are largely consistent with the previous phylogeny, but we find strong support for new clades within Codonophora that were previously unresolved. These results have important implications for trait evolution within Siphonophora, including favoring the hypothesis that monoecy arose at least twice. 2018-06-22 2018-10 /pmc/articles/PMC6064665/ /pubmed/29940256 http://dx.doi.org/10.1016/j.ympev.2018.06.030 Text en https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Munro, Catriona
Siebert, Stefan
Zapata, Felipe
Howison, Mark
Damian-Serrano, Alejandro
Church, Samuel H.
Goetz, Freya E.
Pugh, Philip R.
Haddock, Steven H.D.
Dunn, Casey W.
Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution
title Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution
title_full Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution
title_fullStr Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution
title_full_unstemmed Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution
title_short Improved phylogenetic resolution within Siphonophora (Cnidaria) with implications for trait evolution
title_sort improved phylogenetic resolution within siphonophora (cnidaria) with implications for trait evolution
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6064665/
https://www.ncbi.nlm.nih.gov/pubmed/29940256
http://dx.doi.org/10.1016/j.ympev.2018.06.030
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