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Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea)

Our understanding of the evolution of oral structures within the Colpodida is confounded by the low number of morphological characters that can be used in constructing hypotheses, and by the low taxon and character sampling in molecular phylogenetic analyses designed to assess these hypotheses. Here...

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Detalles Bibliográficos
Autores principales: Dunthorn, Micah, Katz, Laura A., Stoeck, Thorsten, Foissner, Wilhelm
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Gustav Fischer Verlag 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3473355/
https://www.ncbi.nlm.nih.gov/pubmed/22356924
http://dx.doi.org/10.1016/j.ejop.2012.01.007
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author Dunthorn, Micah
Katz, Laura A.
Stoeck, Thorsten
Foissner, Wilhelm
author_facet Dunthorn, Micah
Katz, Laura A.
Stoeck, Thorsten
Foissner, Wilhelm
author_sort Dunthorn, Micah
collection PubMed
description Our understanding of the evolution of oral structures within the Colpodida is confounded by the low number of morphological characters that can be used in constructing hypotheses, and by the low taxon and character sampling in molecular phylogenetic analyses designed to assess these hypotheses. Here we increase character sampling by sequencing the mitochondrial SSU-rDNA locus for three isolates of the Marynidae sensu lato. We show that the inferred mitochondrial and nuclear SSU-rDNA trees, as well as concatenated and constrained analyses, are congruent in not recovering a monophyletic Marynidae. However, due to low node support, the trees are indifferent to whether the morphological characters used to unite the Marynidae are the result of retention of ancestral states or convergence. In light of this indifference and an increased amount of nuclear and mitochondrial SSU-rDNA data, alternative hypotheses of oral evolution in the Colpodida are presented.
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spelling pubmed-34733552012-11-14 Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea) Dunthorn, Micah Katz, Laura A. Stoeck, Thorsten Foissner, Wilhelm Eur J Protistol Article Our understanding of the evolution of oral structures within the Colpodida is confounded by the low number of morphological characters that can be used in constructing hypotheses, and by the low taxon and character sampling in molecular phylogenetic analyses designed to assess these hypotheses. Here we increase character sampling by sequencing the mitochondrial SSU-rDNA locus for three isolates of the Marynidae sensu lato. We show that the inferred mitochondrial and nuclear SSU-rDNA trees, as well as concatenated and constrained analyses, are congruent in not recovering a monophyletic Marynidae. However, due to low node support, the trees are indifferent to whether the morphological characters used to unite the Marynidae are the result of retention of ancestral states or convergence. In light of this indifference and an increased amount of nuclear and mitochondrial SSU-rDNA data, alternative hypotheses of oral evolution in the Colpodida are presented. Gustav Fischer Verlag 2012-11 /pmc/articles/PMC3473355/ /pubmed/22356924 http://dx.doi.org/10.1016/j.ejop.2012.01.007 Text en © 2012 Elsevier GmbH. https://creativecommons.org/licenses/by-nc-nd/3.0/ Open Access under CC BY-NC-ND 3.0 (https://creativecommons.org/licenses/by-nc-nd/3.0/) license
spellingShingle Article
Dunthorn, Micah
Katz, Laura A.
Stoeck, Thorsten
Foissner, Wilhelm
Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea)
title Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea)
title_full Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea)
title_fullStr Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea)
title_full_unstemmed Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea)
title_short Congruence and indifference between two molecular markers for understanding oral evolution in the Marynidae sensu lato (Ciliophora, Colpodea)
title_sort congruence and indifference between two molecular markers for understanding oral evolution in the marynidae sensu lato (ciliophora, colpodea)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3473355/
https://www.ncbi.nlm.nih.gov/pubmed/22356924
http://dx.doi.org/10.1016/j.ejop.2012.01.007
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