Abstract: In order to explore the intestinal microorganisms of Dolly varden trout Salvelinusmalma (1+ and 2+ years old) and lenok Brachymystaxlenok (4+ years old), MiSeq 16S rRNA high-throughput sequencing was used to sequence and analyze the microbes in intestinal contents of healthy Dolly varden trout and lenok in same aquaculture environment. The results showed that there were 3 896 OTUs in the intestinal contents of the Dolly varden trout, and 1 675 OTUs in the intestinal contents of lenok,showing that the dominant microflora was rich in the contents of Dolly varden trout and lenok. There was higher diversity in the 1+ year old Dolly varden trout groups (H1) than that in the 2+ years old groups (H2), indicating that the intestinal microorganisms were planted in the host intestines with the growth, with the dominant flora Mycoplasma in the Dolly varden trout, and the dominant flora Bacillus in the lenok. PCA analysis revealed that there was the similar intestinal microbial community structure in 1+ and 2+ years old Dolly varden trout groups, and different from the 4+ years old lenok (X4). The findings indicated that the fish of same species with different ages had similar intestinal microbial composition under the same culture environment, and the quite different microbial composition was observed in the two salmon species in the same family and different genera, though with the similar microbial diversity.
柳鹏, 李玲雪, 郑伟, 杜晓燕, 闫春梅, 刘慧吉, 高春山. 不同生长阶段花羔红点鲑和细鳞鲑肠道菌群结构差异分析[J]. 大连海洋大学学报, 2022, 37(4): 568-573.
LIU Peng, LI Lingxue, ZHENG Wei, DU Xiaoyan, YAN Chunmei, LIU Huiji, GAO Chunshan. Differences in intestinal microbial community between Dolly varden trout Salvelinus malma and lenok Brachymystax lenok with different ages. Journal of Dalian Ocean University, 2022, 37(4): 568-573.
2022, Vol. 37 
