Temperature differentiation of aquatic microflora of a closed water supply system by the example of incubation of microbiological crops at 21 and 37 °C

Abstract

In this paper, the dependence of the temperature conditions of incubation of microbiological water cultures taken directly from the pool of a closed water supply system on the activity and species diversity of the resulting microflora is analyzed. The object of the study was clarias catfish (Clarias gariepinus), which was grown at a temperature of 22-24 °, Ph 6.5-7.5, which corresponds to the optimal requirements for breeding this type of fish. The study was conducted on the basis of the Russian-Norwegian Center for Research in the field of Innovation and Aquaculture of the MSUTM named after K.G. Razumovsky. As a result of the study, a reliable regularity of the activity of aquatic microflora in CFU / ml, as well as generic and species affiliation, was revealed.

The combined effect of UV radiation and ultrasonic cavitation on saprophytic and conditionally pathogenic microflora of cold-water ultrasound

“…Подобные результаты были получены другими авторами [22,23]. Следует отметить, что ранее нами было показано достоверное снижение некоторых представителей перифитона элементов фильтрации, при совместном воздействии ультразвуковой кавитации и УФ облучения [24][25][26]. Более того, S. Knobloch [27] доказал, что применение УЗ установки оказывает влияние не только на микрофлору воды, но и на микробиом кожи культивируемых гидробионтов.…”

Effects of Three Feed Additives on the Culturable Microbiota Composition and Histology of the Anterior and Posterior Intestines of Zebrafish (Danio rerio)

“…A lower diversity of gut-associated microbiota has been described for laboratory-cultured fish compared to wild specimens [ 46 ]. This is because both exogenous (host taxonomy) and endogenous factors are involved in the formation of the gut microbiome; in particular, endogenous factors for laboratory fish can include the use of artificial feed [ 49 , 50 ], the control of the presence of pathogenic bacteria, and the poor taxonomic composition of aquatic microorganisms [ 51 , 52 ]. Various culture-dependent and culture-independent techniques are used to study the gut microbiome.…”