›› 2005, Vol. 48 ›› Issue (2): 273-278.doi:

• 研究论文 • 上一篇    下一篇

昆虫不连续气体交换

姚  青, 沈佐锐*   

  1. 中国农业大学农学与生物技术学院
  • 出版日期:2005-07-10 发布日期:2005-11-20
  • 通讯作者: 沈佐锐

Discontinuous gas exchange in insects

YAO Qing, SHEN Zuo-Rui*   

  1. College of Agronomy and Biotechnology, China Agricultural University
  • Online:2005-07-10 Published:2005-11-20
  • Contact: SHEN Zuo-Rui

摘要: 许多昆虫呼吸时气体交换是不连续的循环式进行的。根据气门开闭,一个典型的不连续气体交换循环(discontinuous gas exchange cycle, DGC)可以明显分为3个阶段: 关闭阶段,极少或没有气体交换;颤动阶段,气门迅速微开和关闭,O2进入气管,少量CO2释放;最后是开放阶段,大量的CO2释放。该文综述了DGC特征及昆虫活动、温度、体重对DGC的影响,并讨论了DGC与呼吸失水、缺氧或高CO2浓度环境有关的进化适应意义。

关键词: 呼吸, 不连续气体交换循环, 气门, CO2

Abstract: Many insects exchange respiratory gas cyclically and discontinuously. According to the opening or closing spiracle, a typical discontinuous gas exchange cycle (DGC) has three distinct phases: the closed period  with little or no external gas exchange, the flutter period  during which oxygen enters tracheae and little CO2 escapes and the open period  during which lots of CO2 escape. This paper reviews the characteristics of DGC and the effect of insect activities, temperature and mass on DGC, and discusses the evolutionary and adaptive meanings of DGC related to respiratory water loss, hypoxic or hypercapnic environments.

Key words: Respiration, discontinuous gas exchange cycle, spiracle, carbon dioxide