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QUALITATIVE AND QUANTITATIVE COMPOSITION OF ZEBRAFISH INTESTINAL MICROFLORA IN CASE OF WATER POLLUTION BY NANOSCALE CERIUM
Abstract
The study was conducted to study the effect of cerium dioxide nanoparticles on the survival of zebrafishand the microbiome of their intestines. With respect to the intestinal microbiome in the control group, it was registered that the majority of the identified bacteria belonged to Proteobacteria. A peculiar action of CeO2nanoparticleson the intestinal microbiota was an increase in the number of Firmicutes, in particular, Bacilli class bacteria, and a decrease of Proteobacteria phylum, it was manifested in the fluctuation in the number of Gammaproteobacteriarepresentatives. As a result, we registeredselective effect of nanoparticles with respect to separate groups of microorganisms and pathogenic microflora did not develop against the background of cerium dioxide administration into the diet of nanoparticles.
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