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首页> 外文期刊>The Journal of Experimental Biology >Lizards respond to an extremely low-frequency electromagnetic field
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Lizards respond to an extremely low-frequency electromagnetic field

机译：蜥蜴对极低频电磁场作出反应

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摘要

Animals from a wide range of taxa have been shown to possess magnetic sense and use magnetic compasses to orient; however, there is no information in the literature on whether lizards have either of these abilities. In this study, we investigated the behavioral responses of a diurnal agamid lizard (Pogona vitticeps) to a sinusoidal extremely low-frequency electromagnetic field (ELF-EMF; 6 and 8 Hz, peak magnetic field 2.6 mu T, peak electric field 10 V m(-1)). Fourteen adult lizards were divided randomly into two groups (the EMF and control groups; each group had three males and four females). The EMF group received whole-body exposure to ELF-EMF and the control group did not. Lizards in the EMF group were exposed to ELF-EMF for 12 h per day (during the light period). The number of tail lifts was monitored beginning 3 days before exposure and ending after 5 days of exposure. For each individual, the average number of tail lifts per day was calculated. The average number of tail lifts per individual per day was greater in the EMF group than in the control group (20.7 +/- 6.3 and 9.1 +/- 4.5 tail lifts, respectively, N=7 each, P=0.02). We confirmed the reproducibility of this response by a cross-over trial. These results suggest that at least some lizards are able to perceive ELF-EMFs. Furthermore, when the parietal eye of the lizards was covered with a small round aluminum 'cap' which could block light, the tail-lifting response to ELF-EMF disappeared. Our experiments suggest that (1) lizards perceive EMFs and (2) the parietal eye may be involved in light-dependent magnetoreceptive responses.
机译：各种各样的分类单元的动物被证明具有磁性，并使用磁性罗盘进行定向。但是，在文献中没有关于蜥蜴是否具有上述能力之一的信息。在这项研究中，我们研究了日龄蜥蜴蜥蜴（Pogona vitticeps）对正弦极低频电磁场（ELF-EMF; 6和8 Hz，峰值磁场2.6μT，峰值电场10 V m的行为响应） （-1））。将十四只成年蜥蜴随机分为两组（EMF和对照组;每组三只雄性和四只雌性）。 EMF组全身暴露于ELF-EMF，而对照组则没有。 EMF组的蜥蜴每天暴露于ELF-EMF中12小时（在光照期间）。在暴露前3天开始监测尾巴举升的次数，并在暴露5天后监测尾巴举升的次数。对于每个人，每天要计算平均举尾次数。 EMF组每人每天的平均尾巴举升次数高于对照组（分别为20.7 +/- 6.3和9.1 +/- 4.5尾巴举升，每个N = 7，P = 0.02）。我们通过交叉试验证实了该反应的可重复性。这些结果表明，至少一些蜥蜴能够感知到ELF-EMF。此外，当蜥蜴的顶眼被一个小的圆形铝制“帽子”覆盖时，该帽子可能会挡住光线，对ELF-EMF的提尾反应消失了。我们的实验表明，（1）蜥蜴感知到EMF，（2）顶眼可能参与了光依赖性磁感受性反应。

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