Conservation method for endangered Amami-ryukyu Ayu, Plecoglossus altivelis ryukyuensis
Project/Area Number |
26550099
|
Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Design and evaluation of sustainable and environmental conscious system
|
Research Institution | Nagasaki University |
Principal Investigator |
IGUCHI Keiichiro 長崎大学, 水産・環境科学総合研究科(環境), 教授 (00371865)
|
Co-Investigator(Kenkyū-buntansha) |
阿部 信一郎 茨城大学, 教育学部, 教授 (40371869)
堀江 哲也 上智大学, 経済学部, 准教授 (40634332)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | 希少魚 / 栄養塩類 / 社会実装 / 主流化 / 希少種 / 持続可能性 / 奄美 / 観光資源 |
Outline of Final Research Achievements |
Ryukyu-ayu Plecoglossus altivelis ryukyuensis is concerned about the decline in the population as well as downsizing. In Yakugachi River which is of a major habitat for Ryukyu-ayu, productivity of current water was higher in upper reaches than in middle reaches. Consequently, attatched algae in the water of upper reaches grows faster than algae in the water from middle reach. Small adult size of the recent Ryukyu-ayu is explicable by the lower productivity in the middle reaches.
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Report
(4 results)
Research Products
(13 results)