Influence of coral mucus on microbial food chain

珊瑚粘液对微生物食物链的影响

• 批准号: 24710013
• 负责人: NAKAJIMA Ryota
• 金额: $ 2.33万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24710013/
• 关键词: サンゴ粘液; 微生物; 細菌; 鞭毛虫; 従属栄養細菌; 微生物食物連鎖

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.

本研究考察了硬核珊瑚产生的有机物（珊瑚黏液）对珊瑚礁生态系统中微生物和微生物食物链的影响。在有珊瑚黏液的海水中，异养细菌（以下简称细菌）的丰度明显高于无黏液的海水。同时，有黏液的海水中溶解有机质（DOM）和溶解无机磷酸盐（DIP）浓度显著降低。这些结果表明，细菌的生长消耗了DOC和DIP。本研究还显示，在珊瑚覆盖较广的地点，微生物（细菌和鞭毛虫）的浓度较高，这可能是由于珊瑚释放的有机物较多。因此，珊瑚黏液可能会促进珊瑚礁生态系统中微生物食物链（DOM ->细菌->鞭毛虫）中的碳流。

项目成果

Biomass and estimated production rate of metazoan zooplankton community in a tropical coral reef of Malaysia

马来西亚热带珊瑚礁后生浮游动物群落的生物量和估计生产率

• 发表时间: 2013
• 期刊: Marine Ecology
• 作者: Nakajima R;Yoshida T;Othman BHR;Toda T
• 通讯作者: Toda T

第9回IOC/WESTPAC国際科学シンポジウム 「若手研究者賞」を受賞

荣获第九届IOC/WESTPAC国际科学研讨会青年研究员奖

Biomass and estimated production rates of metazoan zooplankton community in a tropical coral reef of Malaysia

马来西亚热带珊瑚礁后生浮游动物群落的生物量和估计生产率

• DOI: 10.1111/maec.12062
• 发表时间: 2014
• 期刊: Marine Ecology
• 作者: Ryota Nakajima;Teruaki Yoshida;Bin Haji Ross Othman;Tatsuki Toda
• 通讯作者: Tatsuki Toda

High inorganic phosphate concentration in coral mucus and its utilization by heterotrophic bacteria in a Malaysian coral reef

马来西亚珊瑚礁珊瑚粘液中的高无机磷酸盐浓度及其异养细菌的利用

• 期刊: Marine Ecology
• 作者: Nakajima R;Fujisawa T;Tanaka Y;Yoshida T;Nakayama A;Fuchinoue Y;Othman BHR;Toda T
• 通讯作者: Toda T

サンゴ礁におけるメソ動物プランクトン群集の栄養構造

珊瑚礁中型浮游动物群落的营养结构

• 发表时间: 2014
• 作者: Nakajima R;Lindsay DJ;Yoshida T;Othman BHR;Toda T;Ryota Nakajima;中嶋亮太
• 通讯作者: 中嶋亮太