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- Material Type
- 文書・図像類
- Author/Editor
- 米山, 和良
- Author Heading
- Publication, Distribution, etc.
- Alternative Title
- Analysis of the swimming behavior of cultivated Pacific bluefin tuna following a change in environment
- Text Language Code
- jpn
- Target Audience
- 一般
- Note (General)
- 2009-2010年度科学研究費補助金(研究活動スタート支援)研究成果報告書 課題番号：21880047 研究代表者：米山和良 (鹿児島大学水産学部助教)本研究では、浮沈式沖合養殖施設内においてクロマグロの養成に必要な情報となる行動記録の計測を実施し、養成環境の変化に対するクロマグロの反応行動を分析した。本研究では、冷水塊の差し込みによる養魚の顕著な遊泳深度の変化をとらえた。また、養魚の3次元遊泳経路の計測に成功し、浮沈操作による養成空間の強制的な変化、潮流による生簀容積の減少がクロマグロの遊泳行動にどのような影響をもたらすのかを本研究で具体的に評価できるようになった。To examine responses to environment changes, we monitored the behavior of cultivated Pacific bluefin tuna in a submerged aquaculture net cage. We confirmed notable changes in the swimming depth of fish when cold water was added to the aquaculture net cage. Additionally, we successfully measured the three dimensional swimming path of the fish. This will enable us to evaluate which factors (i.e., a change in the living space of the submerged net cage by upward or downward movement or a decreased volume caused by ocean currents) affect the behavior of the fish by reconstructing their swimming paths.