Hatherly Laboratories, University of Exeter, Prince of Wales Road, Exeter, EX4 4PS, UK.
Conservation, Information and Research on Cetaceans (CIRCE), Cabeza de Manzaneda 3, 11390, Pelayo-Algeciras, Spain.
Sci Rep. 2024 Nov 26;14(1):29352. doi: 10.1038/s41598-024-80744-0.
Biologging has been used on a range of wild animals to document spectacular feats of migration and behaviour. We describe the pursuit, capture, and ingestion of an adult Atlantic bluefin tuna (Thunnus thynnus) (175 cm, estimated weight: 81 kg), which was instrumented with a biologging tag, by a predator, most likely an orca (Orcinus orca). The predation event lasted over 19 min, with the tuna exhibiting elevated activity (max acceleration 3.12 g) and a rapid ascent from 126 m at 3.6 m.s followed by death and handling at the surface. Orca were separately recorded using video tags, capturing and handling tuna cooperatively in a manner consistent with the tuna data. We then present the longest orca accelerometry dataset from the ingested MiniPAT tag, with diel patterns of activity and 77 feeding events. These unique datasets provide insight into the energetic dynamics of two of the ocean's fastest predators.
生物遥测技术已被应用于一系列野生动物身上，以记录壮观的迁徙和行为壮举。我们描述了一条成年大西洋蓝鳍金枪鱼（Thunnus thynnus）（175 厘米，估计体重：81 公斤）被追捕、捕获和吞食的过程，这条金枪鱼被装上了生物遥测标签，捕食者很可能是虎鲸（Orcinus orca）。捕食事件持续了 19 分钟以上，金枪鱼表现出高度活跃（最大加速度为 3.12g），从 126 米快速上升到 3.6 米/秒，随后在水面死亡并被处理。虎鲸也分别使用视频标签进行了记录，以一种与金枪鱼数据一致的方式合作地捕捉和处理金枪鱼。然后，我们展示了从摄入的 MiniPAT 标签中获得的最长的虎鲸加速度计数据集，其中包括活动的昼夜模式和 77 次进食事件。这些独特的数据集为了解海洋中两种最快的捕食者的能量动态提供了深入的见解。
