INFLUENCE OF SIDEWALL ON SWIMMING BEHAVIOR OF ISOLATED AYU, PLECOGLOSSUS ALTIVELIS ALTIVELIS

• ONITSUKA Kouki

  Kyushu Institute of Technology, Civil Engineering

• AKIYAMA Juichiro

  Kyushu Institute of Technology, Civil Engineering

• MATSUDA Koichiro

  Kyushu Institute of Technology, Civil Engineering

• NOGUCHI Shohei

  Kyushu Institute of Technology, Civil Engineering

• TAKEUCHI Hikaru

  Penta-Ocean Construction Corporation

Bibliographic Information

Other Title

• 単独で遊泳するアユの挙動に及ぼす側壁の影響

Abstract

Behavior of the fish has been investigated so much. However, the effects of the side-wall on the fish behaviors have not been investigated. In this study, the swimming behavior of isolated ayu in a rectangular open-channel flow was recorded with a digital video camera with changing the velocity. It was found that the fish behavior is affected by the side-wall where the distance from sidewall is less than one time of body length of ayu, so that this area was defined as the side-wall area. The mode value of the ground distance, ground speed, swimming distance and swimming speed in the side-wall area is smaller than those in the universal area, and also that the angle of refraction in the side-wall area is constant, irrespective of flow velocity.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 68 (4), I_661-I_666, 2012

  Japan Society of Civil Engineers

Keywords

• isolated ayu
• side-wall area
• universal area
• angle
• running water

Details

• CRID: 1390282680328920320
• NII Article ID: 130004557734
• NII Book ID: AA12199490
• DOI: 10.2208/jscejhe.68.i_661
• ISSN: 2185467X
• HANDLE: 10228/5946
• Web Site: https://kyutech.repo.nii.ac.jp/records/4726
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed