Back to Search Start Over

Phylogenetic relationships within the class Spirotrichea (Ciliophora) inferred from small subunit rRNA gene sequences.

Authors :
Bernhard D
Stechmann A
Foissner W
Ammermann D
Hehn M
Schlegel M
Source :
Molecular phylogenetics and evolution [Mol Phylogenet Evol] 2001 Oct; Vol. 21 (1), pp. 86-92.
Publication Year :
2001

Abstract

The small subunit rDNAs of five species belonging to the Euplotidae and eight species of the Oxytrichidae were sequenced to obtain a more detailed picture of the phylogenetic relationships within the Spirotrichea (Ciliophora). Various tree reconstruction algorhythms yielded nearly identical topologies. All Euplotidae were separated from the other Spirotrichea by a deep split. Further, a large genetic distance between the marine genus Moneuplotes and the freshwater species of Euplotoides was found. Differences between the methods used occurred only within the Oxytrichidae. Whereas the monophyly of the Stylonychinae was supported in all trees, the monophyly of the Oxytrichinae was not. However, the molecular data support the morphological and ontogenetic evidence that the pattern of 18 frontal-ventral-transversal cirri evolved in the stemline of the Oxytrichidae and was modified several times independently. Our results are also in agreement with taxonomic revisions: the separation of both Sterkiella nova from Oxytricha and Tetmemena pustulata from Stylonychia.<br /> (Copyright 2001 Academic Press.)

Details

Language :
English
ISSN :
1055-7903
Volume :
21
Issue :
1
Database :
MEDLINE
Journal :
Molecular phylogenetics and evolution
Publication Type :
Academic Journal
Accession number :
11603939
Full Text :
https://doi.org/10.1006/mpev.2001.0997