Abstract: The intestinal microbiota was analyzed in large yellow croaker Pseudosciaenacrocea cultured in the same conditions with different growth by the high-throughput sequencing to investigate the relationship between growth rate and intestinal flora. The results showed that there were significantly higher quantities of OTUs and Chao1 in the smaller-sized group than those in the larger-sized group (P<0.05), without significant differences in the quantities of Shannon between the two groups (P>0.05). The dominance of Proteobacteria, Firmicutes, Fusobacteria and Bacteroidete was shown in the microbiota, especially Proteobacteria with more than 50% abundances in both groups. The relative abundance in family level revealed that there were significant differences in Sphingomonadaceae, Caulobacteraceae, Comamonadaceae, Pseudomonadaceae and Moraxellaceae between the two groups (P< 0.05), significantly higher relative abundance of Moraxellaceae in the smaller-sized group than that in the larger-sized one. The finding demonstrated that there were differences in intestinal flora in the fish with different growth rates. There was more species in intestinal bacteria in the smaller-sized group than that in the larger-sized group. The growth of the fish seems to be involved in changes in flora of Proteobacteria, and growth differences of the fish are suggested to be attributed to the variation in amount of intestinal Moraxellaceae.
李英英, 陈曦, 宋铁英. 不同生长速度的大黄鱼肠道菌群结构的差异[J]. 大连海洋大学学报, 2017, 32(5): 509-513.
LI Ying-ying, CHEN Xi, SONG Tie-ying. Differences in intestinal flora of cultured large yellow croaker Pseudosciaena crocea with different growth rates. Journal of Dalian Ocean University, 2017, 32(5): 509-513.
2017, Vol. 32 
