EFFECTS OF POPULATION ON AVOIDANCE CHARACTERISTICS OF AYU FROM A FALLING OBJECT
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- ONITUKA Kouki
- Kyushu Institute of Technology
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- AKIYAMA Juichiro
- Kyushu Institute of Technology
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- SIRAKOAK Bin
- Kyushu Institute of Technology
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- MIHARA Kazuya
- Kyushu Institute of Technology
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- OTSUKA Hiroktaka
- Kyushu Institute of Technology
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- UTIDA Kazuma
- Kyushu Institute of Technology
Bibliographic Information
- Other Title
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- 落下物に対するアユの忌避特性に及ぼす尾数の影響
- ラッカブツ ニ タイスル アユ ノ キヒ トクセイ ニ オヨボス ビスウ ノ エイキョウ
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Abstract
Fishermen are embarrassed upon the population reduction of larval fish by the sluice gate which is constructed with dams and weirs. The terror by the falling object from the upward may be valid to make fish avoid from the sluice gate. In this study, the small object was dropped from the upward toward the water surface of a pool, and the fish trajectories were recorded by a digital video camera. It was found that the ayu avoid from the object very quickly during about 1s, and after that ayu make a school of fish gradually. The swimming speed and also the swimming distance during avoiding decreases with an increase of the fish population due to the crowding.
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) 69 (4), I_1327-I_1332, 2013
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390001205352334080
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- NII Article ID
- 130004558159
- 40019820507
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- NII Book ID
- AN10426673
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- ISSN
- 18808751
- 2185467X
- 09167374
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- HANDLE
- 10228/5476
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- NDL BIB ID
- 024918934
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed