Walter Juline M, Bagi Andrea, Pampanin Daniela M
Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, NO-4036 Stavanger, Norway.
NORCE Norwegian Research Centre AS, 5008 Bergen, Norway.
Microorganisms. 2019 Jul 22;7(7):209. doi: 10.3390/microorganisms7070209.
Microorganisms are widespread in all environments, including in and on animal bodies. The gut microbiome has an essential influence on fish health, and is affected by several persistent and harmful organic and inorganic contaminants. Considering the shifts in gut microbiota composition observed in those studies, we hypothesized that certain microbial groups in the gut can serve as indicators of pollution. To test this hypothesis, we explored the possibility of identifying key microbial players that indicate environmental contamination.
Published 16S rRNA gene amplicon sequencing data generated from the gut microbiota of Atlantic cod caught in geographically different Norwegian waters were used for bacterial diversity comparison.
Different microbiomes were identified between the northern Norway and southern Norway samples. Several bacterial genera previously identified as polycyclic aromatic hydrocarbon degraders were present only in the samples collected in the southern Norway area, suggesting fish contamination with oil-related compounds.
The results contribute to the identification of bacterial taxa present in the Atlantic cod gut that indicate fish exposure to contaminants in the marine environment.
微生物广泛存在于所有环境中，包括动物体内和体表。肠道微生物群对鱼类健康具有重要影响，并受到多种持久性有害有机和无机污染物的影响。考虑到在这些研究中观察到的肠道微生物群组成的变化，我们假设肠道中的某些微生物群可以作为污染指标。为了验证这一假设，我们探索了识别指示环境污染的关键微生物的可能性。
利用从挪威不同地理区域捕获的大西洋鳕鱼肠道微生物群产生的已发表的16S rRNA基因扩增子测序数据进行细菌多样性比较。
在挪威北部和南部的样本中鉴定出不同的微生物群。先前被鉴定为多环芳烃降解菌的几个细菌属仅存在于挪威南部地区采集的样本中，这表明鱼类受到了与石油相关化合物的污染。
这些结果有助于识别大西洋鳕鱼肠道中存在的细菌分类群，这些分类群表明鱼类接触了海洋环境中的污染物。
