2013 Fiscal Year Final Research Report
Influence of coral mucus on microbial food chain
| Project/Area Number |
24710013
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
NAKAJIMA Ryota 独立行政法人海洋研究開発機構, 海洋・極限環境生物圏領域, ポストドクトラル研究員 (20546246)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | サンゴ粘液 / 微生物 / 細菌 / 鞭毛虫 |
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| Research Abstract |
This study examined the effect of organic matter produced by scleractinian corals (coral mucus) on microbes and microbial food chain in coral reef ecosystems. The abundance of heterotrophic bacteria (hereafter bacteria) significantly increased in the filtered seawater with coral mucus compared to that without mucus. Meanwhile, the concentrations of dissolved organic matter (DOM) and dissolved inorganic phosphate (DIP) decreased significantly in the seawater with mucus. These results suggest that the bacteria consumed DOC and DIP for their growth. This study also showed that a higher concentration of microbes (bacteria and flagellates) was observed in the higher coral coverage site, probably due to the higher organic matter released by corals. Therefore, coral mucus may enhance carbon flow in the microbial food chain (DOM -> bacteria -> flagellates) in reef ecosystems.
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[Journal Article] Enrichment of microbial abundance in the sea-surface microlayer over a coral reef : implications for biogeochemical cycles in reef ecosystems2013
Author(s)
Ryota Nakajima, Kenji Tsuchiya, Nobuyuki Nakatomi, Teruaki Yoshida, Yuya Tada, Fumie Konno, Tatsuki Toda, Victor S. Kuwahara, Koji Hamasaki, Bin Haji Ross Othman, Thirukanthan C. Segaran, A. W. M. Effendy
Volume
490巻
Pages
11-22
DOI
Peer Reviewed
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