Molecular Biology and Evolution, Vol 15, 1195-1206, Copyright © 1998 by Society for Molecular Biology and Evolution
AH van Hoek, TA van Alen, VS Sprakel, JH Hackstein and GD Vogels
The 18S and 5.8S rDNA genes and the internal transcribed spacers ITS-1 and
ITS-2 of ciliates living in the hindgut of frogs, millipedes, and
cockroaches were analyzed in order to study the evolution of intestinal
protists. All ciliates studied here belong to the genus Nycrotherus.
Phylogenetic analysis revealed that these ciliates from a monophyletic
group that includes the distantly related anaerobic free-living
heterotrichous ciliates Metopus palaeformis and Metopus contortus. The
intestinal ciliates from the different vertebrate and invertebrate hosts
are clearly divergent at the level of their rDNA repeats. This argues for
the antiquity of the associations and a predominantly vertical
transmission. This mode of transmission seems to be controlled primarily by
the behavior of the host. The different degrees of divergence between
ciliates living in different strains of one and the same cockroach species
most likely reflect the different geographical origins of the hosts. In
addition, host switches must have occurred during the evolution of
cockroaches, since identical ciliates were found only in distantly related
hosts. These phenomena prevent the reconstruction of potential cospeciation
events.
ORIGINAL ARTICLE
Evolution of anaerobic ciliates from the gastrointestinal tract: phylogenetic analysis of the ribosomal repeat from Nyctotherus ovalis and its relatives
Department of Microbiology and Evolutionary Biology, Faculty of Science, University of Nijmegen, The Netherlands.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  M. Mentel and W. Martin Energy metabolism among eukaryotic anaerobes in light of Proterozoic ocean chemistry Phil Trans R Soc B, August 27, 2008; 363(1504): 2717 - 2729. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. Stoeck, S. Jost, and J. Boenigk Multigene phylogenies of clonal Spumella-like strains, a cryptic heterotrophic nanoflagellate, isolated from different geographical regions Int J Syst Evol Microbiol, March 1, 2008; 58(3): 716 - 724. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 W.-J. Chang, P. D. Bryson, H. Liang, M. K. Shin, and L. F. Landweber The evolutionary origin of a complex scrambled gene PNAS, October 18, 2005; 102(42): 15149 - 15154. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. G. Kurland and S. G. E. Andersson Origin and Evolution of the Mitochondrial Proteome Microbiol. Mol. Biol. Rev., December 1, 2000; 64(4): 786 - 820. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. H. A. M. van Hoek, T. A. van Alen, V. S. I. Sprakel, J. A. M. Leunissen, T. Brigge, G. D. Vogels, and J. H. P. Hackstein Multiple Acquisition of Methanogenic Archaeal Symbionts by Anaerobic Ciliates Mol. Biol. Evol., February 1, 2000; 17(2): 251 - 258. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. H. A. M. van Hoek, A. S. Akhmanova, M. A. Huynen, and J. H. P. Hackstein A Mitochondrial Ancestry of the Hydrogenosomes of Nyctotherus ovalis Mol. Biol. Evol., January 1, 2000; 17(1): 202 - 206. [Full Text] [PDF]
|
|