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摘要

It's not a divine power. Mosquitoes can walk on water because of the angle at which their legs touch its surface. A mosquito's leg is strong enough to bear up to 23 times its total body weight, which is one reason why it can walk on water so effortlessly. This greatly exceeds the leg strength of other water-walking insects like water striders, whose legs have been more rigorously studied. Jian-Lin Liu of the China University of Petroleum in Qingdao and his colleagues thought a mosquito's advantage might also come from the protective wax and microscopic scales coating its legs. They removed these layers and measured the change in the leg's load-bearing capacity, but found that the layers were responsible for less than 12.5 per cent of the overall supporting force. The main player turned out to be the angle between the leg and the water surface. The supporting force was strongest when the leg was nearly parallel to the surface. Any angle greater than 62 degrees would make the mosquito penetrate the surface.
机译:这不是神圣的力量。蚊子可以在水上行走,因为它们的腿接触到其表面成一定角度。蚊子的腿足够坚固,可以承受其总重量的23倍,这就是它可以如此轻松地在水上行走的原因之一。这大大超过了其他水上行走昆虫(如水str)的腿部力量,对它们的腿进行了更严格的研究。青岛中国石油大学的刘建林和他的同事认为,蚊子的优势也可能来自保护蜡和覆盖在其腿上的微观鳞片。他们去除了这些层并测量了腿部承重能力的变化,但发现这些层所占的支撑力不足总支撑力的12.5%。主要参与者是腿与水面之间的夹角。当腿几乎平行于表面时,支撑力最大。大于62度的任何角度都会使蚊子穿透表面。

著录项

  • 来源
    《New scientist》 |2015年第3036期|16-17|共2页
  • 作者

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 02:51:51
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