Universität zu Köln

Szucsich, Nikolaus U., Bartel, Daniela, Blanke, Alexander, Boehm, Alexander, Donath, Alexander, Fukui, Makiko, Grove, Simon, Liu, Shanlin, Macek, Oliver, Machida, Ryuichiro, Misof, Bernhard, Nakagaki, Yasutaka, Podsiadlowski, Lars, Sekiya, Kaoru, Tomizuka, Shigekazu, Von Reumont, Bjoern M., Waterhouse, Robert M., Walzl, Manfred, Meng, Guanliang, Zhou, Xin, Pass, Guenther and Meusemann, Karen (2020). Four myriapod relatives - but who are sisters? No end to debates on relationships among the four major myriapod subgroups. BMC Evol. Biol., 20 (1). LONDON: BMC. ISSN 1471-2148

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Abstract

BackgroundPhylogenetic relationships among the myriapod subgroups Chilopoda, Diplopoda, Symphyla and Pauropoda are still not robustly resolved. The first phylogenomic study covering all subgroups resolved phylogenetic relationships congruently to morphological evidence but is in conflict with most previously published phylogenetic trees based on diverse molecular data. Outgroup choice and long-branch attraction effects were stated as possible explanations for these incongruencies. In this study, we addressed these issues by extending the myriapod and outgroup taxon sampling using transcriptome data.ResultsWe generated new transcriptome data of 42 panarthropod species, including all four myriapod subgroups and additional outgroup taxa. Our taxon sampling was complemented by published transcriptome and genome data resulting in a supermatrix covering 59 species. We compiled two data sets, the first with a full coverage of genes per species (292 single-copy protein-coding genes), the second with a less stringent coverage (988 genes). We inferred phylogenetic relationships among myriapods using different data types, tree inference, and quartet computation approaches. Our results unambiguously support monophyletic Mandibulata and Myriapoda. Our analyses clearly showed that there is strong signal for a single unrooted topology, but a sensitivity of the position of the internal root on the choice of outgroups. However, we observe strong evidence for a clade Pauropoda+Symphyla, as well as for a clade Chilopoda+Diplopoda.ConclusionsOur best quartet topology is incongruent with current morphological phylogenies which were supported in another phylogenomic study. AU tests and quartet mapping reject the quartet topology congruent to trees inferred with morphological characters. Moreover, quartet mapping shows that confounding signal present in the data set is sufficient to explain the weak signal for the quartet topology derived from morphological characters. Although outgroup choice affects results, our study could narrow possible trees to derivatives of a single quartet topology. For highly disputed relationships, we propose to apply a series of tests (AU and quartet mapping), since results of such tests allow to narrow down possible relationships and to rule out confounding signal.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Szucsich, Nikolaus U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bartel, Daniela UNSPECIFIED UNSPECIFIED UNSPECIFIED Blanke, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Boehm, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Donath, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Fukui, Makiko UNSPECIFIED UNSPECIFIED UNSPECIFIED Grove, Simon UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Shanlin UNSPECIFIED UNSPECIFIED UNSPECIFIED Macek, Oliver UNSPECIFIED UNSPECIFIED UNSPECIFIED Machida, Ryuichiro UNSPECIFIED UNSPECIFIED UNSPECIFIED Misof, Bernhard UNSPECIFIED UNSPECIFIED UNSPECIFIED Nakagaki, Yasutaka UNSPECIFIED UNSPECIFIED UNSPECIFIED Podsiadlowski, Lars UNSPECIFIED UNSPECIFIED UNSPECIFIED Sekiya, Kaoru UNSPECIFIED UNSPECIFIED UNSPECIFIED Tomizuka, Shigekazu UNSPECIFIED UNSPECIFIED UNSPECIFIED Von Reumont, Bjoern M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Waterhouse, Robert M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Walzl, Manfred UNSPECIFIED UNSPECIFIED UNSPECIFIED Meng, Guanliang UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhou, Xin UNSPECIFIED UNSPECIFIED UNSPECIFIED Pass, Guenther UNSPECIFIED UNSPECIFIED UNSPECIFIED Meusemann, Karen UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-312140
DOI:	10.1186/s12862-020-01699-0
Journal or Publication Title:	BMC Evol. Biol.
Volume:	20
Number:	1
Date:	2020
Publisher:	BMC
Place of Publication:	LONDON
ISSN:	1471-2148
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COMPOSITIONAL HETEROGENEITY; EVOLUTIONARY HISTORY; PHYLOGENY; TREE; ALGORITHM; GENOME Multiple languages Evolutionary Biology; Genetics & Heredity Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/31214