Studies on harbour porpoise Phocoena phocoena incidentally caught by fishing gears around Japan and the mechanism of bycatch

日本各地渔具误捕港湾鼠海豚及其兼捕机制研究

• 批准号: 15310159
• 负责人: MATSUISHI Takashi
• 金额: $ 8.45万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15310159/
• 关键词: Harbour Porpoise; Stranding; searching behaviour; echo-location; cricks; 首振り行動; パスアビリティー; 生物学的π数

The stranding records of Harbour porpoise Phocena phocoena collected by Institute of Cetacean Research was analyzed and the high proportion of the stranding was reported on April and May. The most frequently reported stranding place was Usujiri (36 individuals) and the next was Shiraoi (7 individuals). The number of bycatch individuals confirmed by our survey was 16. From the observation of ovary, they were immature. The passability experiment was conducted in the pool of Otaru Aquarium for an individual and found that the 50% passable aperture width was 39cm and become narrower as the habituation. The tau dot analysis was conducted to find the approach speed control to the target. Tau was increased linearly and tau-dot was estimated as 0.772. There were two inflection points of tau at 2sec and 0.7sec before the target. From the behaviour observation, there were two peaks of inter crick intervals at 2ms and 5ms, which means the target of the echo-location was 1.5m and 4m. These result suggest that the target recognitions of harbour porpoise was occurred at 4m and 1.5m before the target using echo-location.

对鲸类研究所收集的港湾海豚搁浅记录进行了分析，发现4月和5月的港湾海豚搁浅率较高。报告搁浅次数最多的是乌苏尻（36只），其次是白井（7只）。经调查确认的副渔获物有16条。从卵巢观察，它们是未成熟的。在小樽水族馆的水池中对个体进行了可通过性实验，发现50%的可通过性孔径宽度为39cm，随着习惯化逐渐变窄。利用tau点分析找到了对目标的接近速度控制。Tau呈线性增加，估计Tau点为0.772。tau在靶前2sec和0.7sec有两个拐点。从行为观察来看，在2ms和5ms处出现了两个响动间隔峰值，说明回声定位目标在1.5m和4m处。这些结果表明，港湾鼠海豚利用回声定位在目标前4m和1.5m处进行目标识别。

项目成果

津軽海峡における鯨類の種構成と地理的・季節的分布についてII

津轻海峡II鲸目动物的种类组成及地理季节分布

• 发表时间: 2005
• 期刊: 日本海セトロジー研究会第16回大会発表要旨集
• 作者: 長尾優輝;須藤竜介;浦西莱耶;川南拓丸;井原美香;飯塚慧;上田茉莉;松石 隆
• 通讯作者: 松石 隆

Species composition and geographical seasonal distribution of Cetacean in Tsugaru Strait, Japan. II

日本津轻海峡鲸类的物种组成及地理季节分布。

• 发表时间: 2005
• 期刊: Abstracts of the papers presented at the 16^<th> congress of The sea of Japan Cetology Research group
• 作者: Nagao;Y.;Sudo;R.;Uranishi;M.;Kawaminami;T.;Ihara;M.;Iizuka;S.;Ueda;M.;Matsuishi;T.
• 通讯作者: T.

北海道南部噴火湾沖の定置網に混獲された幼ネズミイルカの卵巣組織

北海道南部芬卡湾海岸附近的固定网中捕获的一只幼鼠海豚的卵巢组织

• 发表时间: 2005
• 期刊: 日本海セトロジー研究会第16回大会発表要旨集
• 作者: 本間義治;牛木辰男;武田政衛;松石 隆
• 通讯作者: 松石 隆

Honno, Y., Ito, K., Matsuishi, T., Okura, M., Sasaki, M.: "Behavior of a harbor porpoise in an unfamiliar environment"Studies in perception and action. 7. (2003)

Honno, Y.、Ito, K.、Matsuishi, T.、Okura, M.、Sasaki, M.：“港湾鼠海豚在陌生环境中的行为”感知和行动研究。

The study on perception of passability between interspaces by a harbor porpoise (Phocoena phocoena) from ecological approach.

从生态学角度研究港湾鼠海豚（Phocoena phocoena）对空间间通过性的感知。

• 发表时间: 2005
• 期刊: Abstracts of the papers presented at the 16^<th> congress of The sea of Japan Cetology Research group
• 作者: Ito;K.;Matsuishi;T.;Nishiwaki;S.;Sasaki;M.;Aoyama;M.
• 通讯作者: M.