2015 Fiscal Year Final Research Report
Importance of essential fatty acids in terrestrial organic matters for a marine ecosystem
| Project/Area Number |
26820218
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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 |
Civil and environmental engineering
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| Research Institution | Akita Prefectural University (2015)
Tohoku University (2014) |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 必須脂肪酸 / 炭素安定同位体比 / 食物網 / 陸上有機物 / 山川海 |
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| Outline of Final Research Achievements |
Assimilated food sources of benthic animals in Hiroura Lagoon and Gamou Lagoon in Miyagi Prefecture was investigated by using stable isotopes of bulk carbon and essential fatty acids. Stable isotope ratio of bulk carbon in benthic animals showed around -20‰ in both sampling sites, indicating main assimilated food sources of benthic animals were originated from marine. For stable carbon isotope ratio of fatty acid, depleted isotope ratio (less than -30‰) was detected in 18:2ω6 and 18:3ω3 with all collected benthic animals. This indicate that origin of these 2 essential fatty acid was terrestrial organic matters. These results demonstrated that main assimilated food source of benthic animals were marine origin, but some quantitatively minor essential nutrients, such as 18:2ω6 and 18:3ω3 were from terrestrial organic matters.
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| Free Research Field |
生態工学
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