Narazaki Tomoko, Nakamura Itsumi, Aoki Kagari, Iwata Takashi, Shiomi Kozue, Luschi Paolo, Suganuma Hiroyuki, Meyer Carl G, Matsumoto Rui, Bost Charles A, Handrich Yves, Amano Masao, Okamoto Ryosuke, Mori Kyoichi, Ciccione Stéphane, Bourjea Jérôme, Sato Katsufumi
Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
Organization for Marine Science and Technology, Nagasaki University, 1551-7 Tairamachi, Nagasaki, Nagasaki 851-2213, Japan.
iScience. 2021 Mar 18;24(4):102221. doi: 10.1016/j.isci.2021.102221. eCollection 2021 Apr 23.
Advances in biologging technology have enabled 3D dead-reckoning reconstruction of marine animal movements at spatiotemporal scales of meters and seconds. Examining high-resolution 3D movements of sharks (, N = 4; , N = 1), sea turtles (, N = 3), penguins (, N = 6), and marine mammals (, N = 4; , N = 1), we report the discovery of circling events where animals consecutively circled more than twice at relatively constant angular speeds. Similar circling behaviors were observed across a wide variety of marine megafauna, suggesting these behaviors might serve several similar purposes across taxa including foraging, social interactions, and navigation.
生物记录技术的进步使得在米级和秒级的时空尺度上对海洋动物的运动进行三维航位推算重建成为可能。通过研究鲨鱼（，N = 4；，N = 1）、海龟（，N = 3）、企鹅（，N = 6）和海洋哺乳动物（，N = 4；，N = 1）的高分辨率三维运动，我们报告发现了动物以相对恒定的角速度连续盘旋两次以上的盘旋事件。在各种各样的海洋大型动物中都观察到了类似的盘旋行为，这表明这些行为可能在包括觅食、社交互动和导航在内的多个分类群中具有几个相似的目的。
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