The microbial replacement of the digestive tract during the development of hetero-breeding silver slug "Chinese Science 3".

There is a close relationship between the digestive tract microorganism and its host development, the host "targeted selection" of the microorganisms that live in the intestines, and the selected microorganisms in turn have a significant impact on the host, such as maintaining environmental stability in the gut, activating the immune system, etc.
the interoperability of "microorganism-host" has always been a hot topic in the field of microbiology in the digestive tract.
The probiotic classification and ecology discipline group of the Institute of Aquatic Biology of the Chinese Academy of Sciences used high-volume sequencing technology to track the microbial evolution of the digestive tract during its development with the study subject of iso-breeding silver slug "Chinese Science 3". the
study found that the microbiobiota of the iso-breeding silver tract began to increase significantly over time on the third day after the membrane, and that there were significantly different community structures in the digestive tract microorganisms during the host development, i.e. the 3rd to 33rd, 38th to 51st, and 58th to 365th days.
the three significant differences in time scales were not significantly related to the host development stage.
the ecological process by the NRI coefficient, it is found that the main factor that causes this rotation process to occur is the targeted selective pressure of the host.
, however, this directional selection effect is accompanied by a gradual decline in the development of the host itself.
this research is of great significance for further study of the formation and function of fish digestive tract microorganisms in the future.
the work was done by Ph.D. student Li Xinghao and others, and Yan Qingyun, a communications author, received funding from the National Natural Science Foundation, and the results of the study have been published in Microbial Ecology.
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