Hydrodynamic trail-following in harbor seals (Phoca vitulina)
Hydrodynamic trail-following in harbor seals (Phoca vitulina)
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DOI：
10.1126/science.1060514
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发表时间：
2001-07-06
期刊：
影响因子：
56.9
通讯作者：
Bleckmann, H
中科院分区：
文献类型：
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作者：
Dehnhardt, G;Mauck, B;Bleckmann, H
海洋哺乳动物经常在黑暗或浑浊的水域觅食。海豚在这种情况下使用回声定位，而鳍脚类显然缺乏这种感觉能力。对于在黑暗中捕食的海豹来说，感官信息的一个来源可能是鱼产生的水运动，海豹可以用它们高度敏感的胡须探测到。鱼尾随的水运动持续了几分钟。在这里，我们展示了被蒙上眼睛的海豹可以使用它们的胡须来探测并准确地跟踪微型潜艇产生的水动力轨迹。这说明水动力信息可以用于远距离的猎物定位。
Marine mammals often forage in dark or turbid waters. Whereas dolphins use echolocation under such conditions, pinnipeds apparently lack this sensory ability. For seals hunting in the dark, one source of sensory information may consist of fish-generated water movements, which seals can detect with their highly sensitive whiskers. Water movements in the wake of fishes persist for several minutes. Here we show that blindfolded seals can use their whiskers to detect and accurately follow hydrodynamic trails generated by a miniature submarine. This shows that hydrodynamic information can be used for Long-distance prey location.