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- Title
Viruses in the plankton of the Rybinsk Reservoir.
- Authors
Kopylov, A. I.; Kosolapov, D. B.; Zabotkina, E. A.
- Abstract
The role of autochthonous viruses in the regulation of bacterioplantkon abundance and production was studied in the Rybinsk Reservoir. During the ice-free period, the number of virus-like particles varied within the range of (11.0–57.4) × 106 particles/ml. The virus to bacterioplankton abundance ratio ranged within 3.0–9.4. From 4 to 25% of bacterioplankton was infected by phages. A single infected cell contained up to 80 mature virus particles. The phage-induced bacterioplankton mortality in different parts of the reservoir constituted 3.7–41.8% (22.5% on average) of bacterioplankton daily production. Heterotrophic flagellates grazed from 7.6 to 68.8% (27.5% on average) of the daily bacterial production. Thus, along with flagellates, viruses are an important factor controlling bacterioplankton development in the reservoir.
- Subjects
PLANKTON; RYBINSK Reservoir (Russia); PARTICLES; CELLS; VIRUSES; FLAGELLATION; RESERVOIRS; AQUATIC biology; MICROORGANISMS
- Publication
Microbiology (00262617), 2007, Vol 76, Issue 6, p782
- ISSN
0026-2617
- Publication type
Article
- DOI
10.1134/S0026261707060197