Extremely low-frequency electromagnetic fields disrupt magnetic alignment of ruminants
Extremely low-frequency electromagnetic fields disrupt magnetic alignment of ruminants
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DOI：
10.1073/pnas.0811194106
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发表时间：
2009-04-07
影响因子：
11.1
通讯作者：
Nemec, Pavel
中科院分区：
文献类型：
--
作者：
Burda, Hynek;Begall, Sabine;Nemec, Pavel
休息和吃草的牛和鹿倾向于将它们的身体轴对准地磁南北方向。这种行为背后的机制仍然未知。在这里，我们表明，极低频磁场（ELFMF）所产生的高压电力线破坏这些动物的身体与地磁场的对齐。牛和梅花鹿的身体方向是随机的牧场下或附近的电力线。此外，牛暴露于各种磁场直接下方或附近的电力线倾向于在不同的磁方向表现出不同的模式的对齐。ELFMF对人体定位的干扰作用随着与导体的距离而减小。这些发现构成了大型哺乳动物的磁感觉的证据，以及脊椎动物对弱ELFMF的明显行为反应的证据。对弱ELFMF的反应表明在细胞和分子水平上的影响。
Resting and grazing cattle and deer tend to align their body axes in the geomagnetic North-South direction. The mechanism(s) that underlie this behavior remain unknown. Here, we show that extremely low-frequency magnetic fields (ELFMFs) generated by high-voltage power lines disrupt alignment of the bodies of these animals with the geomagnetic field. Body orientation of cattle and roe deer was random on pastures under or near power lines. Moreover, cattle exposed to various magnetic fields directly beneath or in the vicinity of power lines trending in various magnetic directions exhibited distinct patterns of alignment. The disturbing effect of the ELFMFs on body alignment diminished with the distance from conductors. These findings constitute evidence for magnetic sensation in large mammals as well as evidence of an overt behavioral reaction to weak ELFMFs in vertebrates. The demonstrated reaction to weak ELFMFs implies effects at the cellular and molecular levels.