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The Dung Beetle Compass

机译：粪甲虫指南针

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摘要

What do a burly rower, a backstroke swimmer and a hard-working South African dung beetle all have in common? The answer is: they all benefit from moving along a straight path, and do so moving backwards. This, however, is where the similarity ends. While the rower has solved this navigational challenge by handing the task of steering to the coxswain, who faces the direction of travel, and the swimmer is guided down her lane by colourful ropes, the beetle puts its faith in the sky. From here, it utilises a larger repertoire of celestial compass cues than is known to be used by any other animal studied to date. A robust internal compass, designed to interpret directional information, has evolved under the selective pressure of shifting today’s lunch efficiently out of reach of competitors, also drawn to the common buffet. While this is a goal that beetles might share with the hungry athletes, they reach it with drastically different brain powers; the brain of the beetle is several times smaller than a match head, containing fewer than a million neurons.
机译：什么是魁梧的划船，仰泳游泳运动员和一个勤劳的南非粪甲虫都共同普遍？答案是：它们都受益于直接路径移动，并倒退。然而，这是相似性结束的地方。虽然Rower通过递给面对旅行方向的Coxswain的任务来解决了这种导航挑战，而游泳运动员被五彩缤纷的绳索引导她的车道，甲虫将其信仰放在天空中。从这里，它利用了较大的天线罗盘线索，而不是被研究到迄今为止的任何其他动物使用的圆形罗盘线索。旨在解释定向信息的强大内部指南针在快速移出竞争对手的午餐的选择性压力下，已经进化了，也被竞争对手达到了竞争对手。虽然这是甲虫可能与饥饿的运动员分享的目标，但他们达到了巨大的大脑力量;甲虫的大脑比匹配头小几倍，含有少于一百万神经元。

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  • 来源
    《Current Biology: CB》 |2018年第17期|共5页
  • 作者

    Marie Dacke; Basil el Jundi;

  • 作者单位

    Lund Vision Group Department of Biology Lund University;

    Emmy Noether Animal Navigation Group Zoology II Biocenter University of Wuerzburg;

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  • 中图分类 生物科学;
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