HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >

Repeated selective enrichment process of sediment microbiota occurred in sea cucumber guts

Files in This Item:
YYamazaki_re-submitted_version.pdf262.02 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Repeated selective enrichment process of sediment microbiota occurred in sea cucumber guts
Authors: Yamazaki, Yohei Browse this author
Sakai, Yuichi Browse this author
Mino, Sayaka Browse this author →KAKEN DB
Suda, Wataru Browse this author →KAKEN DB
Hattori, Masahira Browse this author →KAKEN DB
Meirelles, Pedro Milet Browse this author
Thompson, Fabiano Browse this author
Sawabe, Tomoo Browse this author →KAKEN DB
Issue Date: Dec-2019
Publisher: John Wiley & Sons
Journal Title: Environmental microbiology reports
Volume: 11
Issue: 6
Start Page: 797
End Page: 807
Publisher DOI: 10.1111/1758-2229.12791
Abstract: Deposit‐feeding sea cucumbers repeat ingestion of sediments and excretion of faeces daily and consequently increase bacterial abundance in sediments and promote organic matter mineralization. Such ecological roles are expected to be collaborative activities of sea cucumbers and the gut microbiota. Here, we performed a spatiotemporally broad 16S rRNA gene analysis using 109 samples from sea cucumber faeces and habitat sediments to explore potential contribution of their gut microbiota to the ecological roles. Most operational taxonomic units (OTUs) observed in the faecal samples were shared with the sediment samples, nevertheless faecal and sediment microbiota differed from each other in UniFrac analysis. Lower bacterial diversity and increased relative abundance of specific OTUs in the faecal microbiota strongly suggest selective enrichment of ingested sediment microbiota in their guts. Interestingly, representative faecal OTUs were more abundant in sea cucumber‐populated sediments than in un‐inhabited sediments, indicating bacteria selectively enriched in the guts were spread on ambient sediments via faeces. Moreover, the predicted microbial community metabolic potential showed a higher abundance of genes related to carbohydrate and xenobiotics metabolisms in faeces than in sediments. Our study suggests the repeated selective enrichment transforms ambient sediment microbial communities and maintains the host's ecological roles by promoting organic matter mineralization.
Rights: This is the peer reviewed version of the following article: Repeated selective enrichment process of sediment microbiota occurred in sea cucumber guts, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 澤辺 智雄

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University