...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Multifunctionality and mechanical origins: Ballistic jaw propulsion in trap-jaw ants
【24h】

Multifunctionality and mechanical origins: Ballistic jaw propulsion in trap-jaw ants

机译：多功能性和机械起源：夹爪蚂蚁的弹道下颌推进

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Extreme animal movements are usually associated with a single, a high-performance behavior. However, the remarkably rapid mandible strikes of the trap-jaw ant, Odontomachus bauri, can yield multiple functional outcomes. Here we investigate the biomechanics of mandible strikes in O. bauri and find that the extreme mandible movements serve two distinct functions: predation and propulsion. During predatory strikes, O. bauri mandibles close at speeds ranging from 35 to 64 m(.)s(-1) within an average duration of 0.13 ms, far surpassing the speeds of other documented ballistic predatory appendages in the animal kingdom. The high speeds of the mandibles assist in capturing prey, while the extreme accelerations result in instantaneous mandible strike forces that can exceed 300 times the ant's body weight. Consequently, an O. bauri mandible strike directed against the substrate produces sufficient propulsive power to launch the ant into the air. Changing head orientation and strike surfaces allow O. bauri to use the trap-jaw mechanism to capture prey, eject intruders, or jump to safety. This use of a single, simple mechanical system to generate a suite of profoundly different behavioral functions offers insights into the morphological origins of novelties in feeding and locomotion.
机译：动物的极端运动通常与一种单一的高性能行为有关。但是，下颚蚂蚁鲍氏突齿的下颌突击非常迅速，可以产生多种功能结果。在这里，我们研究了鲍里乌骨下颌骨撞击的生物力学，发现极端的下颌骨运动具有两种不同的功能：掠食和推进。在掠食性攻击期间，鲍里氏下颚骨在平均持续时间0.13毫秒内以35到64 m（。）s（-1）的速度关闭，远远超过了动物界中其他有记录的弹道掠夺性附件的速度。下颌骨的高速有助于捕获猎物，而极端的加速度会导致下颌骨的瞬时打击力超过蚂蚁体重的300倍。因此，定向于底物的鲍氏鲍氏下颌骨撞击产生足够的推进力以将蚂蚁发射到空气中。改变头的朝向和撞击面使鲍里奥氏菌可以使用下颌机构捕获猎物，弹出入侵者或跳转到安全地带。通过使用单个简单的机械系统来产生一系列极为不同的行为功能，就可以洞察进食和运动中新奇事物的形态学起源。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号