Composition of Gut Microbiota in the Gibel Carp (Carassius auratus gibelio) Varies with Host Development
Composition of Gut Microbiota in the Gibel Carp (Carassius auratus gibelio) Varies with Host Development
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银鲫 (Carassius auratus gibelio) 肠道微生物群的组成随宿主发育而变化
DOI：
10.1007/s00248-016-0924-4
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发表时间：
2017-07-01
影响因子：
3.6
通讯作者：
Yan, Qingyun
中科院分区：
文献类型：
--
作者：
Li, Xinghao;Zhou, Li;Yan, Qingyun
为了了解无菌鱼肠道生态系统如何随着鱼的年龄发展微生物群，我们对孵化的异育银鲫（Carassius auratus gibelio）的肠道微生物群进行了为期1年的研究。我们的研究结果表明，肠道微生物多样性显着增加鱼类的发展。肠道微生物群落组成显示出显着的变化对应于主机的年龄，并出现在两个时间点，尽管一致的饮食和环境条件下，这表明肠道微生物群落的一些功能可能是由主机的发展。饮食和环境变化似乎也会导致鱼肠道微生物群落的显著变化。这项研究表明，异育银鲫的肠道微生物群在宿主发育的不同时间组装成不同的群落，这一过程受周围环境的影响小于宿主饮食和发育。基于净相关指数的群落系统发育分析进一步表明，环境过滤（宿主选择）决定性地控制着肠道微生物群落组成。更重要的是，在宿主发育过程中，宿主相关的确定性过滤的影响往往会显著减弱。然而，还需要进一步的研究来评估在不同的饲养策略下，肠道微生物群中这种宿主发育依赖性的转变是否仍然存在。
To understand how a bacteria-free fish gut ecosystem develops microbiota as the fish ages, we performed a 1-year study on the gut microbiota of hatchling gibel carp (Carassius auratus gibelio). Our results indicate that the gut microbial diversity increases significantly as the fish develop. The gut microbial community composition showed significant shifts corresponding to host age and appeared to shift at two time points despite consistent diet and environmental conditions, suggesting that some features of the gut microbial community may be determined by the host’s development. Dietary and environmental changes also seem to cause significant shifts in the fish gut microbial community. This study revealed that the gut microbiota of gibel carp assemble into distinct communities at different times during the host’s development and that this process is less affected by the surrounding environment than by the host diet and development. Community phylogenetic analyses based on the net relatedness index further showed that environmental filtering (host selection) deterministically governs the gut microbial community composition. More importantly, the influence of host-associated deterministic filtering tends to weaken significantly over the course of the host’s development. However, further studies are needed to assess whether this host development-dependent shift in gut microbiota will still exist under different rearing strategies.