Swimbladder Morphology and Target Strength of a Mesopelagic Fish, Maurolicus japonicus

• FUJINO Tadanori

  Japan Sea National Fisheries Research Institute

• SADAYASU Kazuhiro

  National Fisheries Research Institute of Fisheries Engineering

• ABE Koki

  National Fisheries Research Institute of Fisheries Engineering

• KIDOKORO Hideaki

  Japan Sea National Fisheries Research Institute

• TIAN Yongjun

  Japan Sea National Fisheries Research Institute

• YASUMA Hiroki

  Hokkaido University

• MIYASHITA Kazushi

  Hokkaido University

抄録

The relationship of target strength (TS), tilt angle and the effect of swimbladder resonance were examined using a theoretical scattering model for Maurolicus japonicus (30.4-46.8 mm standard length (SL)) at 38 kHz and 120 kHz, based on swimbladder measurements. The effect of tilt angle on TS was seen at 120 kHz, but was minimal at 38 kHz. The effect of resonance on TS was clear at 38 kHz, but was minimal at 120 kHz. This was due to the small size (average 11 % of SL) and oval shape with a relatively high aspect ratio (average 0.48) of the swimbladder. Considering the effect of resonance, the TS-SL relationships at 38 kHz were estimated: TS = 10.0 log₁₀SL - 61.3 at 200 m depth. Considering the effect of tilt angle, the average TS (TS_avg) -SL relationship at 120 kHz was estimated: TS_avg = 16.5 log₁₀SL - 75.1.

収録刊行物

• 海洋音響学会誌

  海洋音響学会誌 36 (4), 241-249, 2009

  特定非営利活動法人 海洋音響学会

キーワード

• <I>Maurolicus japonicus</I>
• Mesopelagic fish
• Target strength
• Swimbladder resonance

詳細情報

• CRID: 1390001204367207552
• NII論文ID: 130004490624
• NII論文ID: 40016853483
• NII書誌ID: AN10299394
• DOI: 10.3135/jmasj.36.241
• ISSN: 18816819
• ISSN: 09165835
• ISSN: http://id.crossref.org/issn/03882861
• NDL書誌ID: 10458038
• Web Site: http://id.ndl.go.jp/bib/10458038
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10458038
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可