Quantification of microbial communities in hydrothermal vent habitats of the southern mariana trough and the mid-okinawa trough

Katsunori Yanagawa, Jun Ichiro Ishibashi, Takao Arai, Tetsuro Urabe, Michinari Sunamura

研究成果: 著書/レポートタイプへの貢献

抜粋

The structure of microbial populations near chemosynthetic faunal communities of two geographically and geologically distinct deep-sea hydrothermal vent fields were quantitatively evaluated using catalyzed reporter deposition-fluorescence in situ hybridization (CARD-FISH). The hydrothermal vent of the Southern Mariana Trough (SMT) was dominated by colonization of gastropods in the low-temperature diffuse hydrothermal fluid, whereas macrofauna in mixing zones of the Mid-Okinawa Trough (MOT) consisted of polychaetes, galatheid crabs, and bivalves. A quantitative comparison revealed that the microbial community of the SMT hydrothermal vent field is significantly different from that of the MOT and is strongly influenced by mixing conditions between reduced hydrothermal fluid and oxygenated seawater. In particular, a high proportion of Epsilonproteobacteria was found in the SMT hydrothermal fluid, which is composed of approximately 88% seawater. In contrast, sulfur oxidizers in Gammaproteobacteria were most abundant near vent fauna habitats in the MOT. Our results suggest that the SMT hydrothermal environment is distinct from that of the MOT and affects the community structure of macrofauna and microbial flora.

元の言語英語
ホスト出版物のタイトルSubseafloor Biosphere Linked to Hydrothermal Systems
ホスト出版物のサブタイトルTAIGA Concept
出版者Springer Japan
ページ61-69
ページ数9
ISBN(電子版)9784431548652
ISBN(印刷物)9784431548645
DOI
出版物ステータス出版済み - 1 1 2015

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

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  • これを引用

    Yanagawa, K., Ishibashi, J. I., Arai, T., Urabe, T., & Sunamura, M. (2015). Quantification of microbial communities in hydrothermal vent habitats of the southern mariana trough and the mid-okinawa trough. : Subseafloor Biosphere Linked to Hydrothermal Systems: TAIGA Concept (pp. 61-69). Springer Japan. https://doi.org/10.1007/978-4-431-54865-2_6