| Project/Area Number |
08456093
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General fisheries
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| Research Institution | Ocean Research Institute, The University of Tokyo |
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Principal Investigator |
KOGURE Kazuhiro Division of Marine Microbiology, Ocean Research Institute, The University of Tokyo Associate Professor, 海洋研究所, 助教授 (10161895)
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| Co-Investigator(Kenkyū-buntansha) |
TSUTSUMI Hiroaki Department of Life Sciecnce, Kumamoto Prefectural University, 生活科学部, 助教授 (50197737)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1997: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1996: ¥6,200,000 (Direct Cost: ¥6,200,000)
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| Keywords | Capitella sp.1 / Heterotrophic Bacteria / Bacterial Activity / Organic Pollution / イオウ化合物 / 有機物代謝 / イオウ細菌 / 環境浄化 / 底質 / 独立栄養 / 共生細菌 |
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| Research Abstract |
Capitella sp. I is a bcnthic organism of which normal habitat is coastal polluted sediments. Previous observations clarified that presence of this organism may prevent from further deterioration of the environments. The actual mechanism was assumed to be introduction of oxic seawater from upper water column and oxidation of sulfide to sulfur or sulfate. Bacteria may play an important role as nutritional source for Capitella sp. I and/or degrader of organic pollutants in the environments. The purpose of this investigation was to clarify these contributions. During the course of this study, we developed a new method to culture and observe the behavior of Capitella sp. I directly, by using transparent containcr and solidified agar. In addition, we used the chemical (I NT) which made it possible to visualize and quantity the bacterial respiratory activity. The result showed that Capitella sp. I stimulates the activity of bacteria by making holes in the sediment and introducing oxic seawater. As heterotrophic bacterial activity is assumed to couple to degradation of organic matter, it was conchided that presence and behavior of Capitella sp. I does play important roles to prevent from deterioration. This new technique will be applicable for various research on the interact on between benthic organisms and bacteria.
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