Freshwater gomphonemoid diatom phylogeny: preliminary results
- J. P. KociolekAffiliated withDiatom Collection Department of Invertebrate Zoology and Geology, California Academy of Sciences
- , E. F. StoermerAffiliated withCenter for Great Lakes and Aquatic Sciences, The University of Michigan
A cladistic analysis of eleven freshwater gomphonemoid diatom taxa yielded three equally most parsimonious cladograms. The three cladograms suggest Gomphoneis Cleve is non-monophyletic as originally and recently circumscribed. Gomphoneis elegans and G. transsilvanica (Pant.) Krammer are more closely related to Gomphopleura Reichelt ex Tempère than to other members of the genus. Gomphoneis geitleri Kociolek and Stoermer appears to represent a monotypic lineage. Among the taxa with differentiated apical pore fields Gomphonema kaznakowi Mereschkowsky appears to be primitively astigmate.
The three cladograms vary with regard to systematic affinities among the Gomphoneis herculeana (Ehrenberg) Cleve group, Miocene gomphonemoid species from Idaho (USA), gomphonemoid taxa from East Africa and Gomphonema sensu stricto. Despite variability in number of puncta rows per stria and presence of an axial plate in the Miocene species from North America, inclusion of these taxa in the analysis provided better resolution of relationships than if they were excluded.
Key wordscladistics Gomphoneis Gomphonema Gomphopleura phylogeny
- Freshwater gomphonemoid diatom phylogeny: preliminary results
- Book Title
- Twelfth International Diatom Symposium
- Book Subtitle
- Proceedings of the Twelfth International Diatom Symposium, Renesse, The Netherlands, 30 August – 5 September 1992
- pp 31-38
- Print ISBN
- Online ISBN
- Series Title
- Developments in Hydrobiology
- Series Volume
- Springer Netherlands
- Copyright Holder
- Springer Science+Business Media B.V.
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- Herman van Dam (1)
- Editor Affiliations
- 1. Department of Aquatic Ecology, DLO-Institute for Forestry and Nature Research
- Author Affiliations
- 2. Diatom Collection Department of Invertebrate Zoology and Geology, California Academy of Sciences, Golden Gate Park, San Francisco, CA, 94118, USA
- 3. Center for Great Lakes and Aquatic Sciences, The University of Michigan, 2200 Bonisteel Boulvard, Ann Arbor, MI, 48109, USA
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