Investigation of cross-shelf migration mechanisms of Anguilla japonica glass eels using multiple approaches based on physical environments and behaviors
Project/Area Number |
15K14787
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Aquatic bioproduction science
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Research Institution | The University of Tokyo |
Principal Investigator |
Miyake Yoichi 東京大学, 大学院新領域創成科学研究科, 助教 (30624902)
|
Project Period (FY) |
2015-04-01 – 2018-03-31
|
Project Status |
Completed (Fiscal Year 2017)
|
Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
Keywords | シラスウナギ / 接岸回遊 / 黒潮 / 黒潮系暖水波及 |
Outline of Final Research Achievements |
The catches of juvenile Japanese eel were compared with physical environmental data. The cross-shelf migration of glass eels between the Kuroshio and Lake Hamana was investigated using numerical simulations. 1) The glass eel catch in Lake Hamana was correlated with the path of Kuroshio, as well as the water temperature difference between Lake Hamana and Shirahama. 2) The glass eel catches in several prefectures facing the Kuroshio were correlated with the average wind speeds. 3) The hypothetical sinking of glass eels was found to facilitate their detrainment and cross-shelf migration from the Kuroshio.
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Report
(4 results)
Research Products
(5 results)