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 (discontinuousgas 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。
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 CO (2) escapes and the open period during which lots of CO (2) 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.
出处
《昆虫学报》
CAS
CSCD
北大核心
2005年第2期273-278,共6页
Acta Entomologica Sinica
关键词
呼吸
不连续气体交换循环
气门
CO2
Respiration
discontinuous gas exchange cycle
spiracle
carbon dioxide
