Abstract
The taxonomic and size-morphological structure of bacterioplankton has been studied in two large Mongolian reservoirs and the rivers on which they are built. Correlations between the taxonomic and size groups of bacteria and their main consumers, heterotrophic nanoflagellates, have been revealed. It has been shown that the protists consume large and active bacteria of classes Gammaproteobacteria and Bacteroidetes selectively, leaving small-sized Alphaproteobacteria and medium-sized Actinobacteria as dominants in the communities. The size–morphological structure of bacterioplankton formed by consumers is accompanied by spatial changes in the subdominants, probably performing similar functions in aquatic ecosystems.
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ACKNOWLEDGMENTS
We are grateful to N.L. Bel’kova (Research Center for Family Health and Human Reproduction (Irkutsk)) for her help in obtaining amplicon libraries and their sequencing, as well as in processing and discussing the results.
Funding
This study was carried out within the framework of state task no. АААА-А18-118012690098-5. The field studies were supported by the Joint Russian–Mongolian complex biological expedition of the Russian Academy of Sciences and the Academy of Sciences of Mongolia.
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The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.
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Kuznetsova, E.V., Kosolapov, D.B. & Kosolapova, N.G. Taxonomic and Size–Morphological Groups of Bacterioplankton in Two Mongolian Reservoirs. Biol Bull Russ Acad Sci 47, 27–34 (2020). https://doi.org/10.1134/S1062359019060104
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DOI: https://doi.org/10.1134/S1062359019060104