AN IMPROVEMENT OF MIGRATION RATE WITH EVASION COLOR OF PLECOGLOSSUS ALTIVELIS ALTIVELIS IN POOL-AND-WEIR FISHWAY
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- ONITSUKA Kouki
- Kyushu institute of technology
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- AKIYAMA Juichiro
- Kyushu institute of technology
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- SHISHIDO Akira
- Kyushu institute of technology
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- ARISUDA Tomoko
- Kyushu institute of technology
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- TAKAMATSU Shuhei
- Kyushu institute of technology
Bibliographic Information
- Other Title
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- アユの忌避色を利用した階段式魚道における遡上率改善策
- アユ ノ キヒショク オ リヨウ シタ カイダンシキ ギョドウ ニ オケル ソジョウリツ カイゼンサク
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Abstract
Most of fishways installed in Japanese rivers belong to the pool-and-weir fishway type. This fishway is usually made by concrete, so that the color of the pool side-wall and bed are gray. On the other hand, it is pointed out that the fish behavior is affected by the wall color. Unfortunately, the effect of wall color in the fishway on the fish behavior has not been investigated. It has been found that ayu (Plecoglossus Altivelis Altivelis) evade red (5R4/14). In this study, the position where painted red were changed into pool side-wall and bed. It was found that the migration rate increases by painting downstream and left bank sidewall. It’s because ayu evaded painted sidewall and center of fish’s school is located nearby upstream notch.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71 (4), I_1087-I_1092, 2015
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390282680328794880
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- NII Article ID
- 130005123482
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- NII Book ID
- AN10426673
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- ISSN
- 18808751
- 2185467X
- 09167374
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- NDL BIB ID
- 026352515
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed