| Project/Area Number |
22580210
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Nihon University |
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Principal Investigator |
TAKAI Noriyuki 日本大学, 生物資源科学部, 准教授 (00350033)
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| Co-Investigator(Kenkyū-buntansha) |
KUWAE Tomohiro (独)港湾空港技術研究所, 海洋・水工部, チームリーダー (40359229)
SATO Yoshikazu 日本大学, 生物資源科学部, 准教授 (60366622)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 生態 / 行動 / カワウ / 食害 / 生態系 / 安定同位体 / 内水面漁業 / 駆除 / アユ / ウグイ / 動物 / 生態学 / 水産学 / 行動学 |
|---|
| Research Abstract |
Feeding ecology of Great Cormorants in the Kano River basin, the lzu Peninsula, Japan, was examinedt。evaluate the effect of elimination of the corm。rants for the conservation of lnland fisheries resources.The results in analyses of stomach contents and stable isotope ratios showed that the corrnorants preyedmainly onfreshwator fishes inhabiting the Kano River watershed. The results in population censusesshowed that the Kano River is likely the main feeding ground for the cormorants from summer to earlywinter, irrespective of execution of elimination for the commorants and the change of location of cormorant colonies. It is necessary to introduce different methods for prevention of the feeding damagesby the cormorants.
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