Diversity and characterization of lactic acid bacteria from Common Carp (Cyprinus carpio L.) intestine in winter (Northern Kazakhstan)

Autor:	Maira Urazova, Akhan Abzhalelov, Zinigul Sarmurzina, Kunsulu Zakarya, Alexandr Shevtsov, Gulmira Bissenova, Gulyaim Abitayeva, Zhanar Tekebayeva
Rok vydání:	2020
Předmět:	Common carp chemistry.chemical_compound biology chemistry food and beverages Zoology General Agricultural and Biological Sciences biology.organism_classification Biochemistry Bacteria General Environmental Science Cyprinus Lactic acid
Zdroj:	Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya. :34-47
ISSN:	2311-2077 1998-8591
DOI:	10.17223/19988591/52/2
Popis:	Currently, in Kazakhstan, chemical agents and antibiotics are widely used for treatment and prevention of fish diseases at fish farms. The use of probiotics as an alternative to antibiotics can help reduce the spread of antibiotic resistance in this area. The aim of the present study was to isolate the intestinal lactic acid bacteria of wintering carps. We assume that such bacteria can have more adaptive properties and can be used as probiotics for growing carp juveniles at fish farms. A probiotic characteristic of 22 lactic acid bacteria isolated from Common carp intestines was studied. Universal primers were used to determine the sequence of 16S rRNA gene fragments of lactic acid bacteria (LAB). Phylogenetic relationships of the isolates were estimated using the neighbor-joining (NJ) method in Mega 6,0. All identified isolates can grow in temperature range from 10° C to 37° C and in presence of bile salt. The isolated bacteria were screened for antibacterial activity, resistance to bile, resistance to antibiotics and growth at low temperatures. All isolates were tested in vitro for their ability to inhibit the growth of Shewanella xiamenensis, Pseudomonas taiwanensis, Ps. aeruginosa and Aeromonas punctata. As a result, 7 isolates with strong antagonistic activity were selected. 16S rDNA gene sequencing identified 4 isolates as Lactobacillus fermentum, 2 - as L. casei/paracasei and 1 - as Pediococcus pentosaceus. Antibiotic resistance profile of selected strains was studied, too. This study is the first attempt for Kazakhstan to isolate and study the representatives of the normal intestinal microflora of commercial fish species. Selective strains could be potential probiotics for freshwater aquaculture practices in Kazakhstan.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5912f7219e1354caee93168e478c794e https://doi.org/10.17223/19988591/52/2 Zobrazit plný text záznamu