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Molecular phylogeny of the phylum Gastrotricha: New data brings together molecules and morphology

Paps, J and Riutort, M (2012) 'Molecular phylogeny of the phylum Gastrotricha: New data brings together molecules and morphology.' Molecular Phylogenetics and Evolution, 63 (1). 208 - 212. ISSN 1055-7903

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Abstract

Gastrotricha is a species-rich phylum of microscopical animals that contains two main orders, Chaetonotida and Macrodasyida. Gastrotrichs are important members of the aquatic environment and significant players in the study of animal evolution. In spite of their ecological and evolutionary importance, their internal relationships are not yet well understood. We have produced new sequences for the 18S rDNA gene to improve both the quality and quantity of taxon sampling for the gastrotrichs. Our phylogeny recovers the monophyly of the two main Gastrotricha clades, in contrast to recent studies with similar sampling, but in agreement with morphology based analyses. However, our topology is not able to resolve the first branches of the macrodasyidans or settle the position of the puzzling Neodasys, a controversial genus classified as a chaetonotidan on morphological grounds but placed within macrodasyidans by molecular studies. This analysis is the most exhaustive molecular phylogeny of the phylum to date, and significantly increases our knowledge of gastrotrich evolution. © 2011 Elsevier Inc.

Item Type: Article
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QH Natural history > QH426 Genetics
Q Science > QL Zoology
Divisions: Faculty of Science and Health > Biological Sciences, School of
Depositing User: Jordi Paps Montserrat
Date Deposited: 12 Oct 2015 13:06
Last Modified: 17 Aug 2017 17:32
URI: http://repository.essex.ac.uk/id/eprint/15092

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