A Hotspot of Amoebae Diversity: 8 New Naked Amoebae Associated with the Planktonic Bloom-forming Cyanobacterium Microcystis

• Authors: Jeroen van Wichelen , David Bass , Cédric Berney , Myriam Claeys , Sofie d’Hondt , Pieter Vanormelingen , Wim Vyverman
• Languages of publication: PL

Abstracts

PL

The colonies of Microcystis, one of the most common bloom-forming cyanobacteria worldwide, harbor a diverse community of microorganisms. Among these, naked amoebae feeding on Microcystis cells can strongly influence natural Microcystis population dynamics. In this study, we investigated the species diversity of these amoebae based on 26 Microcystis-associated amoebae (MAA) strains from eutrophied water bodies in Belgium and elsewhere in western Europe. A detailed morphological characterization in combination with 18S rDNA (SSU) phylogenies revealed the presence of no less than 10 species. Nine of these belonged to the known genera Vannella (2 species), Korotnevella (2), Copromyxa (2), Vexillifera (1), Cochliopodium (1) and the recently described Angulamoeba (1). Only two were previously described, the others were new to science. One taxon could not be assigned to a known genus and is here described as Schoutedamoeba gen. n., representing a new variosean lineage. The discovery of so many new species from only one very specific habitat (Microcystis colonies) from a rather restricted geographical area indicates that the diversity of planktonic naked amoebae is much higher than previously appreciated and that only a tiny fraction of the total diversity of naked amoebae is currently known.

Keywords

PL

Naked amoebae, Microcystis, morphology, 18S rDNA, harmful algal blooms, grazing, Europe

• Publisher: Uniwersytet Jagielloński
• Journal: Acta Protozoologica
• Year: 2016
• Volume: 55
• Issue: 2

Dates

published

2016

online

22 - 09 - 2016

Contributors

author

Jeroen van Wichelen

author

David Bass

author

Cédric Berney

author

Myriam Claeys

author

Sofie d’Hondt

author

Pieter Vanormelingen

author

Wim Vyverman