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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/17169

Title: Molecular phylogeny of Kalyptorhynchia (Rhabdocoela, Platyhelminthes) inferred from ribosomal sequence data
Authors: TESSENS, Bart
Janssen, Toon
Issue Date: 2014
Citation: ZOOLOGICA SCRIPTA, 43 (5), p. 519-530
Abstract: With 556 species described to date, Kalyptorhynchia includes about one-third of all species of rhabdocoel flatworms. In this study, we present the first molecular phylogenetic analysis of this taxon. The final analysis comprises 110 species. These represent 11 of the 17 known families. The largest family (241 known species), Polycystididae, is represented by nine of 10 subfamilies and 33 of the 58 genera. Sequence data from 18S rDNA and 28S rDNA were analysed using maximum likelihood and Bayesian approaches. Of the two taxa traditionally recognised within Kalyptorhynchia, Eukalyptorhynchia and Schizorhynchia, only Schizorhynchia is monophyletic. All eukalyptorhynch families, except Cicerinidae, are monophyletic. On the other hand, two of the three schizorhynch families included are not monophyletic. Within Polycystididae, the traditional taxonomy was not reflected in our phylogenetic analyses and most subfamilies are polyphyletic. These results suggest that current classification, mostly based on characters of the genital system, suffers from homoplasy. Where possible, a revised classification, taking into account these new findings, is given.
Notes: Tessens, B (reprint author), Hasselt Univ, Ctr Environm Sci, Agoralaan,Gebouw D, B-3590 Diepenbeek, Belgium. bart.tessens@uhasselt.be; toon.janssen@ugent.be; tom.artois@uhasselt.be
URI: http://hdl.handle.net/1942/17169
DOI: 10.1111/zsc.12066
ISI #: 000340521500008
ISSN: 0300-3256
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

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