气体交换模式的温度依赖在蝶Pieris napi中随着隔膜的进展而变化
Philip Süess1, Kevin T Roberts1, Philipp Lehmann2
1Department of Zoology, Stockholm University, 11418 Stockholm, Sweden.
Journal of insect physiology
|November 17, 2023
概括
昆虫的呼吸模式在隔离期间在连续气体交换 (CGE) 和不连续气体交换 (DGE) 之间发生变化. 这项研究表明,Pieris napi pupae中的这些变化可以表明隔膜状态和热调节.
科学领域:
- 昆虫生理学 昆虫生理学
- 环境适应环境适应
- 代谢调节 代谢调节 代谢调节
背景情况:
- 昆虫表现出灵活的新陈代谢率,影响呼吸模式,如连续气体交换 (CGE) 和不连续气体交换 (DGE).
- 不连续的气体交换 (DGE) 经常在昆虫的隔离过程中观察到,这是对不利条件的生存策略.
- 断期间DGE的确切作用和调节需要进一步研究.
研究的目的:
- 为了研究皮埃里斯·纳皮·布帕在隔膜停滞期间CGE和DGE之间的转变.
- 确定呼吸模式是否可以作为隔离状态和隔离后过渡的非侵入性指标.
- 探索DGE模式的热依赖及其对断期间内源性过程的影响.
主要方法:
- 在不同温度下对Pieris napi pupae进行了长期呼吸计测量.
- 呼吸模式 (CGE与DGE) 在关键的隔离期阶段进行了监测.
- 分析了与温度和发育阶段相关的二氧化碳生产和DGE循环特征.
主要成果:
- 皮埃里斯·纳皮·巴在化后不久从CGE过渡到DGE,这与在隔膜开始时的代谢抑制相吻合.
- 在隔膜停滞期间,子即使在较高的温度下也保持DGE,增加DGE周期频率,而不是切换到CGE.
- 每个开放阶段的二氧化碳释放量保持不变,这表明内部二氧化碳水平 (ρCO2) 的调节.
- 隔离期后的发展导致二氧化碳产量增加,并在允许条件下重新转向CGE.
结论:
- 在Pieris napi pupae的呼吸模式在隔膜休息期间受到严格调节.
- 呼吸模式的变化 (CGE/DGE) 是对隔离期进展和隔离期后发展的可靠指标.
- 在隔离期间捍卫特定的内部二氧化碳设定点,不管外部温度变化如何.
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