Issue |
E3S Web of Conf.
Volume 381, 2023
International Scientific and Practical Conference “Development and Modern Problems of Aquaculture” (AQUACULTURE 2022)
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Article Number | 01072 | |
Number of page(s) | 9 | |
Section | Agriculture, River Ecosystems and Environment | |
DOI | https://doi.org/10.1051/e3sconf/202338101072 | |
Published online | 14 April 2023 |
Biotesting as a modern assessment method of the aquatic environment Biofloc quality
Don State Technical University Gagarin square 1, Rostov-on-Don, 344003, Russia
* Corresponding author: elenasamoilova92@yandex.ru
Studies were conducted to determine the biofloc media toxicity degree to hydrobionts by biotesting. Environment variability in which biocenosis biofloc is formed can cause optimal C/N ratio values violations in a closed water system, which is considered a critical factor affecting the formation rate of microbial communities and species ratio in them. Test objects use in this study showed no toxic effects on the bioindicator in the environment created by the bacterial communities that make up the Biofloc system. Of course, the data obtained cannot be considered exhaustive, but it should be noted that aquatic plant use as a bioindicator provides new opportunities for developing biofloc systems potential. The BFT-systems principle is to stimulate the natural growth of macroaggregate flocs, enhance culture water self-nitrification. A prerequisite for the flocs’ functioning as a biofilter analogue, along with supporting them in suspension, is the presence of an easily digestible organic carbon source, as the cultures of bacterial microorganisms in the base of flocs are heterotrophic.
Key words: biotesting / biofloc / toxicity / cytoplasm / aquaculture / elodea
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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