Satellite tracking of whale sharks using tethered tags
Satellite tracking of whale sharks using tethered tags
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DOI：
10.1016/j.fishres.2006.11.011
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发表时间：
2007-03-01
影响因子：
2.4
通讯作者：
Antoniou, Alex
中科院分区：
文献类型：
--
作者：
Gifford, Andrew;Compagno, Leonard J. V.;Antoniou, Alex
鲸鲨（Rhincodon typus）每年聚集在南非（印度洋）和洪都拉斯湾群岛乌蒂拉周围的沃茨（加勒比海），形成鲸鲨生态旅游业的基础。1998年和1999年，鲨鱼研究所在五条鲸鲨身上安装了系留卫星标签，以收集关于它们潜水情况以及长期和短期活动的资料。潜水员将标签锚放置在鲨鱼的皮肤或肌肉组织中，并使用1.5至7米的系绳，将卫星标签附着在鲨鱼上，取得了不同程度的成功。系留标签提供有关鲸鲨的栖息地使用和潜水概况的实时数据，如果它们过早地从宿主动物身上分离，就可能被回收。一个意想不到的发现是，鲨鱼定期潜入超过320 m的深度，这可能导致标签因阻力而过早脱落，因此标签的流体动力学得到了改善。在南非的夸祖鲁-纳塔尔海岸外被标记的鲨鱼向北移动。在洪都拉斯乌蒂拉湾群岛沿岸被标记的一条鲨鱼游到天鹅群岛，然后沿沿着尤卡坦半岛进入墨西哥盆地，而在乌蒂拉沿岸被标记的第二条鲨鱼游到伯利兹沿岸。这项研究证实，当需要实时数据时，系留卫星标签是监测鲸鲨旅行路径和栖息地使用的有效工具。(c)2006 Elsevier B.V.保留所有权利。
Aggregations of whale sharks, Rhincodon typus, occur each year off South Africa (Indian Ocean) and in the waters surrounding Utila, Bay Islands, Honduras (Caribbean Sea), where they form the basis of a whale shark ecotourism industry. In 1998 and 1999 the Shark Research Institute deployed tethered satellite tags on five whale sharks in an effort to gather information on their diving profiles and both long-term and short-term movements. Satellite tags were attached to the sharks by divers using tag anchors placed in either the skin or musculature of the shark, and tethers from 1.5 to 7 m were used with varying degrees of success. Tethered tags provide real-time data about the habitat use and diving profiles of whale sharks, and may be recovered if they detach prematurely from the host animals. An unexpected finding was that the sharks dived regularly to depths of > 320 m, which may have contributed to premature detachment of the tags due to drag and, as result, the hydrodynamics of the tag were refined. Sharks tagged off the coast of KwaZulu-Natal, South Africa, travelled northwards. One shark tagged off the coast of Utila Bay Islands, Honduras, travelled to the Swan Islands, then moved along the Yucatan Peninsula and into the Mexico Basin, while the second shark tagged off Utila travelled to the coast of Belize. This study confirms that tethered satellite tags are effective tools in monitoring travel paths and habitat use of whale sharks when real-time data is needed. (c) 2006 Elsevier B.V. All rights reserved.