AUTHOR=Zhu Zheng , Xu Yu-Min , Liang Jun-Han , Huang Wei , Chen Jin-Ding , Wu Si-Ting , Huang Xiao-Hong , Huang You-Hua , Zhang Xiao-Yang , Sun Hong-Yan , Qin Qi-Wei 

TITLE=Relationship of environmental factors in pond water and dynamic changes of gut microbes of sea bass Lateolabrax japonicus

JOURNAL=Frontiers in Microbiology

VOLUME=Volume 14 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2023.1086471

DOI=10.3389/fmicb.2023.1086471

ISSN=1664-302X

ABSTRACT=The effect of structure of gut microbes of organisms on the health of host has attract increasing attention. Sea bass Lateolabrax japonicus is an important farmed fish in China. Studying the dynamic changes of intestinal bacterial communities in L. japonicus, and the relationship between water environment and intestinal microorganisms are very important for healthy aquaculture. Here, the diversity and abundance of the gut microbial communities of L. japonicus were evaluated during the aquaculture using 16S rRNA Illumina sequencing. Both the opportunistic pathogens (Aeromonas,1.68%; Vibrio, 1.59%; and Acinetobacter, 1.22%) and the potential probiotics (Lactobacillus, 2.27%; Bacillus, 1.16%; and Lactococcus, 0.37%) were distributed in the L. japonicus gut. The increasing concentration of nitrogen of water environments with the increase of aquaculture time significantly correlated with shifts in the microbial community structure: 40.04% of gut microbial changes due to nitrogen. Higher concentrations of nitrogen showed a significantly negative correlation with intestinal probiotics in L. japonicus. The results indicate that the abundance of intestinal bacteria of L. japonicus is mainly driven by the changes of environmental factors (e.g., nitrogen), and it's very important that the linking environmental parameters with bacterial data of guts used as an early warning indicator in L. japonicus heath aquaculture.