Nuisance algae Gonyostomum semen (Raphidophyta) in water bodies of protected natural areas in Middle Volga region (Russia)

The distribution if nuisance raphidophyte Gonyostomum semen in water bodies of protected natural areas of the Middle Volga region is analyzed. The abundance of the species was determined quantitatively in eight lakes using the method of fixation with mercuric chloride. In four more lakes, it was fou...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-11, Vol.607 (1), p.12024
Main Authors: Umanskaya, M V, Tarasova, N G, Bykova, S V, Yu Gorbunov, M
Format: Article
Language:English
Subjects:
Algae
Cell number
Geography
Gonyostomum semen
Inspection
Lakes
Mercuric chloride
Mercury compounds
Nuisance algae
Plankton
Species
Water color
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Summary:The distribution if nuisance raphidophyte Gonyostomum semen in water bodies of protected natural areas of the Middle Volga region is analyzed. The abundance of the species was determined quantitatively in eight lakes using the method of fixation with mercuric chloride. In four more lakes, it was found by qualitative inspection of live samples. It develops mainly in lakes with high water color, reaching the cell number of 7.5 106 cells L1, but also occurs in clear-water lakes in minor abundance (10-1600 cells L−1). It has been demonstrated that some ciliate species e.g. Frontonia leucas can consume G semen cells and therefore partially control its abundance. Taking into account the presented data, this species was recorded in the plankton of lakes in all regions of the forest part of the Middle Volga basin. Thus, these results significantly expand the geography of the planktonic habitats of G semen in the whole Volga region.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/607/1/012024