Document Type

Article

Publication Date

11-1-2012

Publication Title

European Journal of Protistology

Abstract

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.

Keywords

Bootstrap, Colpodeans, Mitochondrial SSU-rDNA, Node support, Nuclear SSU-rDNA, Phylogeny

Volume

48

Issue

4

First Page

297

Last Page

304

DOI

10.1016/j.ejop.2012.01.007

ISSN

09324739

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

Rights

© 2012 Elsevier GmbH. Open access under CC BY-NC-ND license.

Comments

Archived as published.

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