Marine mammals are an important part of ocean ecosystems, of which, whales play a vital role in the marine food chain. In this study, the mucosa and contents from different intestinal tract segments (ITSs) of a stranded dwarf minke whale (Balaenoptera acutorostrata) were analyzed. The gut microbiota were sequenced using high‐throughput sequencing technology, based on a 16S rRNA approach. The microbial composition of the intestinal mucosa and its contents were similar in every single ITS. Large intestine microbiota richness and diversity were significantly higher when compared to the duodenum and jejunum. The dominant bacteria in the gut were Firmicutes and Actinobacteria; the former was enriched in the large intestine, whereas the latter was more abundant in the duodenum and jejunum. Our findings provide novel insights for microbiota in B. acutorostrata.

中文翻译：

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滞留的矮小小须鲸（Balaenoptera acutorostrata）不同肠道段中微生物群的分布。

海洋哺乳动物是海洋生态系统的重要组成部分，鲸鱼在海洋食物链中起着至关重要的作用。在这项研究中，分析了滞留的小须鲸（Balaenoptera acutorostrata）不同肠道段（ITSs）的粘膜和内容物。基于16S rRNA方法，使用高通量测序技术对肠道菌群进行了测序。在每一个ITS中，肠粘膜的微生物组成及其含量均相似。与十二指肠和空肠相比，大肠微生物群的丰富性和多样性明显更高。肠道中的主要细菌是Firmicutes和放线菌; 前者在大肠中富集，而后者在十二指肠和空肠中更丰富。我们的研究结果提供了新的见解细菌在acutorostrata。