Fiscal Year
2016
Title
Research on the relationship between food source and quality of aquacultures in Onagawa Bay
Project and Theme
Project 1. Study on ecological succession of fisheries ground
Representative Organization: Tohoku University
Theme1. Environmental monitoring and development of a marine habitat map for the coastal ecosystem of Onagawa Bay| Representative person | Kenji Kaneko |
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| Organization | Tohoku University |
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| Department | Graduate School of Agricultural Science |
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Theme1. Environmental monitoring and development of a marine habitat map for the coastal ecosystem of Onagawa Bay| Representative person | Akihiro Kijima |
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| Organization | Tohoku University |
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| Department | Graduate School of Agricultural Science |
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Research InformationPeriod and Interval2016/04/01 - 2017/03/31
monthly
Research Area
Onagawa Bay
CategoryField survey
OverviewResearch on the relationship between food source and quality of aquacultures (Scallop, Oyster and Sea pineapple) in Onagawa Bay
Overview of the Observation
Research Point Table
| Point | | Name | Takenoura |
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| Coordinates | 38.43988,141.488347 |
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| Name | Konorihama |
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| Coordinates | 38.438681,141.458121 |
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| Name | Iigohama |
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| Coordinates | 38.402189,141.480661 |
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Results and Future PlanThe carbon and nitrogen stable isotope ratios of aquacultures (scallop, oyster and sea pineapple) were different between three species. The carbon stable isotope ratio of sea pineapple was lower than the ratio of oyster and scallop. It is suggested that food source of sea pineapple is phytoplankton, and food source of oyster and scallop is attached microalgae.
The carbon stable isotope ratio of the rock barnacle which attached to the aquacultures was different from the ratio of three species. On the other hand, the carbon stable isotope ratio of the mussel which is filter-feeder was a same as the ratio of three species. Therefore, it is suggested that the mussel competes with aquacultures.
Investigation Item and Data Acquisition
| Investigation Item | Data Acquisition |
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| Growth of aquacultures | Wet weight, Dry weight |
| Body composition | Water content, Free amino acid contents |
| Food habits | Stable isotope ratios, Fatty acid contents |
Reference
Related Observation Plan
Related Observation Data
Person in charge of Investigation
| Representative person | Ayu Katayama |
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| Organization | Tohoku University |
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| Department | Graduate School of Life Sciences |
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| Fiscal Year | 2016 |
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| Organization | Tohoku University |
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| Category | Field survey |
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| Research Area | South Sanriku |
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| Discipline | Ocean biology / Ocean ecology -> Biomass
Ocean biology / Ocean ecology -> Ecology
Ocean biology / Ocean ecology -> Mollusks
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