Variations and Potential Factors of Gut Prokaryotic Microbiome During Spawning Migration in Coilia nasus
- 24 June 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Current Microbiology
- Vol. 77 (10), 2802-2812
- https://doi.org/10.1007/s00284-020-02088-y
Abstract
Coilia nasus is influenced by various external pressures during spawning migration and these anadromous transitions can lead to specific gut microbiome characteristics that affecting the host biological process. Therefore, the purpose of this study was to determine the variations of components and functions in the gut prokaryotic microbiome during spawning migration as well as the key factors that triggered the changes. The gut microbiome in C. nasus was mainly consisted of Proteobacteria, Bacteroidetes, Firmicutes, Deinococcus-Thermus and Fusobacteria via 16S rRNA Gene Amplicon Sequencing. The relative abundance of Acinetobacter and Clostridium increased, while Corynebacterium, Actinomyces, Bacillus, Klebsiella and Ochrobactrum decreased after entering freshwater, indicated the preference of C. nasus gut microbial members transferred from seawater to freshwater. Additionally, the proportion of Firmicutes significantly decreased and then increased, as well as the arise of some soil bacteria in gut, corresponding to the phenomenon that C. nasus are fasting during the upstream process and refeeding after entering the spawning grounds. The function prediction of gut microbiome was also consistent with the above results. The present study generally demonstrated the gut microbiome dynamics and the significant correlation between the gut microbiome and salinity and feeding behavior in the spawning migration of C. nasus.Funding Information
- National Key R & D Program of China (2018YFD0900901, 2019YFD0901203)
- Major project of hydrobios resources in Jiangsu province (ZYHB16)
- Species Resources Conservation Project of the Ministry of Agriculture (Investigation and Analysis of Special fishing speci)
- Ecological and Environmental Monitoring system of the three Gorges Project of the Yangtze River (Downstream station) monitoring project (JJ[2017]-010)
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