This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Scheckenbach, F.
Right arrow Articles by Arndt, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Scheckenbach, F.
Right arrow Articles by Arndt, H.
Agricola
Right arrow Articles by Scheckenbach, F.
Right arrow Articles by Arndt, H.

 Previous Article  |  Next Article 

Applied and Environmental Microbiology, October 2006, p. 6638-6643, Vol. 72, No. 10
0099-2240/06/$08.00+0     doi:10.1128/AEM.02547-05
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Molecular Comparisons of Freshwater and Marine Isolates of the Same Morphospecies of Heterotrophic Flagellates

Frank Scheckenbach,1 Claudia Wylezich,1 Alexander P. Mylnikov,2 Markus Weitere,1 and Hartmut Arndt1*

Department of General Ecology and Limnology, Zoological Institute, University of Cologne, 50931 Cologne, Germany,1 Institute of the Biology of Inland Waters, Russian Academy of Sciences, Yaroslavskaya Obl., Borok, Russia2

Received 28 October 2005/ Accepted 24 July 2006

Heterotrophic flagellates are key components of all ecosystems. Understanding the patterns of biodiversity of these organisms is thus particularly important. Here we analyzed the intraspecific diversity of 10 morphospecies of heterotrophic flagellates comprising representatives of the Apusozoa (2 morphospecies) and Kinetoplastea (8 morphospecies), all belonging to the most common flagellates with worldwide distribution. Most morphospecies showed a mixing of lineages isolated from diverse habitats, indicating that some lineages of these morphospecies had been able to colonize different habitats several times. Furthermore, our results revealed remarkable levels of genetic divergence within most of the morphospecies studied, underlining the difficulty of correctly determining species by means of morphology alone. Many cryptic or pseudocryptic species seem to occur. Our results revealed clear divergence between marine and freshwater lineages of the morphospecies Ancyromonas sigmoides, showing that freshwater lineages have not been able to colonize marine environments and marine lineages have not been able to colonize freshwater environments for a long time.

* Corresponding author. Mailing address: Department of General Ecology and Limnology, Zoological Institute, University of Cologne, 50931 Cologne, Germany. Phone: 49 221 470 3100. Fax: 49 221 470 5932. E-mail: Hartmut.Arndt{at}uni-koeln.de.

Applied and Environmental Microbiology, October 2006, p. 6638-6643, Vol. 72, No. 10
0099-2240/06/$08.00+0     doi:10.1128/AEM.02547-05
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Caron, D. A., Countway, P. D., Savai, P., Gast, R. J., Schnetzer, A., Moorthi, S. D., Dennett, M. R., Moran, D. M., Jones, A. C. (2009). Defining DNA-Based Operational Taxonomic Units for Microbial-Eukaryote Ecology. Appl. Environ. Microbiol. 75: 5797-5808 [Abstract] [Full Text]  
  • Stoeck, T., Jost, S., Boenigk, J. (2008). Multigene phylogenies of clonal Spumella-like strains, a cryptic heterotrophic nanoflagellate, isolated from different geographical regions. Int. J. Syst. Evol. Microbiol. 58: 716-724 [Abstract] [Full Text]  


Copyright © 2009 by the American Society for Microbiology.   For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»