Impact of viruses on mortality of heterotrophic bacteria in rivers flowing through a large city (Cherepovets, Upper Volga)
2015
Kopylov, A. I. | Zabotkina, E. A. | Ievleva, T. V.
The abundance and production of planktonic viruses, frequency of infected bacterial cells and number of mature phages in infected bacterial cells, and virus-induced mortality of bacterioplankton were studied in two small rivers and the large Sheksna River flowing through a large city in April–October, 2011. High positive correlations have been determined between the abundance of planktonic viruses and bacteria and the number of viruses attached to bacterial cell walls and the frequency of infected bacteria. The number of planktonic viruses and the mortality of bacteria caused by virus-induced lysis in hypertrophic and eutrophic small rivers are higher than in the mesotrophic Sheksna River.
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