Ability for swimming analysis of the small consecutive wandering fish in the downstream of the river area and application to a fishway design.

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450336
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rural environmental engineering/Planning
• Research Institution: Hirosaki University
• Principal Investigator: IZUMI MATTASHI 弘前大学, 農学生命科学部, 教授 (60132007)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 河川横断工作物 / 魚道 / 小型回遊魚 / 遊泳能力 / 魚道設計

Outline of Final Research Achievements

To contribute to the design technology of fishways for small migratory fish, such as ice goby (Leucopsarion petersi), pond smelt (Hypomesus nipponensis), and goby (Gymnogobius urotaenia sp.), the authors conducted a field swimming experiment to determine the swimming ability of these fish. Results show that the relation between the swimming speed and the swimming distance corresponding to the velocity condition of the required hydraulic factor for fishway design was clarified for the first time nationally. The analysis results of the swimming ability of these fish are available as a guideline for the hydraulic design of mild slope-type and a pool-type fishways with partitions.

Free Research Field

地域環境工学・計画学