| Project/Area Number |
24780190
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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 |
General fisheries
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| Research Institution | Nagasaki University |
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Principal Investigator |
UMEZAWA Yu 長崎大学, 大学院 水産・環境科学総合研究科, 准教授 (50442538)
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| Research Collaborator |
KAWABE Ryo 長崎大学, 大学院水産環境科学総合研究科, 教授 (80380830)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | アミノ酸同位体 / バルク同位体 / 近海魚類 / 生態・行動 / 硝酸同位体 |
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| Research Abstract |
Stable carbon and nitrogen isotopes (d13C,d15N) in the muscle tissues of the Japanese flounders, the movement of which had been identified based on the high-frequency depth data loggers, were analyzed and interpreted with d13C & d15N in particulate organic matter (POM) collected around Nagasaki and d15N in specific amino acids (phenylalanine and glutamic acid) in the same muscle tissues. It was suggested that the difference of bulk isotopes in the flounders reflected the values of primary producers supporting the food web, rather than the difference of the trophic levels among the flounders targeted. This study successfully indicated that the bulk isotopes in the coastal fishes can be used as one of good indicator to identify their swimming and feeding behaviors at the coastal areas with spatial variation of d13C and d15N in primary producers.
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