Dalian Key Laboratory of Conservation Biology for Endangered Marine mammals, Liaoning Ocean and Fisheries Science Research Institute, Dalian, China.
Dalian Sun Asia Tourism Holding Co., Ltd., Dalian, China.
Microbiologyopen. 2021 Mar;10(2):e1190. doi: 10.1002/mbo3.1190.
Age is known to affect the gut microbiota in various animals; however, this relationship is poorly understood in seabirds. We investigated the temporal succession of gut microbiota in captive chinstrap penguins of different ages using high-throughput sequencing. The gut microbiota exhibited a significant age succession pattern, reaching maturity in adults and then declining with increasing age. Only 15 amplicon sequence variants were shared among the gut microbiota in chinstrap penguins at all studied ages, and these contributed to most of the age-related variations in total gut microbiota. Co-occurrence networks found that these key bacteria belonged to the genera Acinetobacter, Clostridium sensu stricto, and Fusobacterium, and more species interactions were found within the same taxonomy. Functional prediction indicated that most of the metabolic functions were more abundant in the gut microbiota in adult chinstrap penguins, except for carbohydrate metabolism, which was significantly more abundant in older individuals.
年龄已知会影响各种动物的肠道微生物群；然而，在海鸟中，这种关系知之甚少。我们使用高通量测序研究了不同年龄的圈养帽带企鹅肠道微生物群的时间演替。肠道微生物群表现出显著的年龄演替模式，在成年期达到成熟，然后随着年龄的增长而下降。在所有研究的年龄中，帽带企鹅的肠道微生物群中只有 15 个扩增子序列变异体是共享的，这些变异体对总肠道微生物群的大部分年龄相关变化起作用。共生网络发现，这些关键细菌属于不动杆菌属、严格梭菌属和梭杆菌属，在同一分类群中发现了更多的物种相互作用。功能预测表明，除了碳水化合物代谢外，大多数代谢功能在成年帽带企鹅的肠道微生物群中更为丰富，而碳水化合物代谢在年龄较大的个体中更为丰富。
