The first step towards coexistence and co—prosperity of bIuefintuna and natural coral

研究成果の概要(和文): 近畿大学のクロマグロ養殖イケスは、奄美大島の花天湾にある。ここのイケスロープには、美しいサンゴが育っている。このクロマグロ養殖とサンゴ共存のメカニズムを物質循環の駆動力となる海洋細菌の動態とサンゴが大量に放出する粘液に注目して調べた。イケス周辺の「海水のみ」と「海水＋粘液」を一定時間培養し、比較すると、「海水のみ」ではあまり細菌群集構造が変化しなかったが、「海水＋粘液」ではその質も量も大きく変化した。 研究成果の概要(英文) : Many beautiful corals are living on the ropes of tuna cages in Amami Experimental Station of Kinki University. This suggests that the appropriate aquaculture activities would be done in this area. Such co-existence between aquaculture and coral is very rare in the world. In this study, we focused on the ecological functions of marine bacteria and coral mucus as the first step to understand the wonderful balance of the ecosystem. The mucus was collected from Acropora sp. which was a dominant species on ropes of the tuna cages. Bacterial abundance in the"mucus＋seawater" sample during 10-h-incubation increased, while that in the seawater sample (control) was lower and constant. Bacterial composition changed drastically in the "mucus＋seawater " sample, but not in the seawater sample.機関番号:34419; 研究種目：挑戦的萌芽研究; 研究期間：2011～2012; 課題番号：23658168; 研究分野：農学; 科研費の分科・細目：水産学・水産学一