In‐situ observations of the sensory hairs of Antarctic minke whales ( Balaenoptera bonaerensis )
In‐situ observations of the sensory hairs of Antarctic minke whales ( Balaenoptera bonaerensis )
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南极小须鲸（Balaenoptera bonaerensis）感觉毛的现场观察
DOI：
10.1002/ar.24720
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Friedlaender, Ari
中科院分区：
文献类型：
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作者：
Reichmuth, Colleen;Casey, Caroline;Friedlaender, Ari
最大的海洋哺乳动物的触觉知之甚少。虽然神秘主义者拥有专门的感觉毛，这些结构的描述几乎完全基于对死后个体组织的检查。在现存的鲸类中，很少观察到和描述过感觉毛。我们在南极西部半岛拍摄了南极小须鲸Balaenoptera bonaerensis，并使用高分辨率图像来描述自由游泳个体的感觉毛的数量，分布，方向和相对大小。感觉毛发达。它们分布在下颌尖、上下颌边缘和气孔附近。观察到的毛远少于其他mysticete物种，包括相关物种Balaenoptera acutorostrata。在活组织内的感觉毛的位置和明显的硬度结合移动鲸鱼的观察和图像表明，这些结构有助于检测空气和冰的界面，并可能是淹没的猎物场的边界。
The sense of touch in the largest marine mammals is poorly understood. While mysticetes possess specialized sensory hairs that are present through adulthood, descriptions of these structures are based almost entirely on examination of tissues in post‐mortem individuals. Sensory hairs have rarely been observed and described in living whales. We photographed Antarctic minke whalesBalaenoptera bonaerensisin the Western Antarctic Peninsula and used high‐resolution images to describe the number, distribution, orientation, and relative size of sensory hairs in freely swimming individuals. Sensory hairs were well developed. They were distributed on the tip of the lower jaw, the margins of the upper and lower jaw, and near the blowhole. Far fewer hairs were observed than reported for other mysticete species, including the related speciesBalaenoptera acutorostrata. Placement and apparent stiffness of sensory hairs within living tissue combined with observations and images of moving whales suggest these structures aid in detecting air and ice interfaces, and possibly, the boundaries of submerged prey fields.