在高温环境下,Tupaia belangeri热调节的生理适应策略面临挑战
Dongjie Liu1, Wanlong Zhu1,2,3
1Key Laboratory of Ecological Adaptive Evolution and Conservation on Animals-Plants in Southwest Mountain Ecosystem of Yunnan Province Higher Institutes College, Yunnan Normal University, Kunming, China.
Frontiers in physiology
|September 15, 2025
概括
图帕亚 belangeri 通过增加体温和散热,证明其热带起源的显著适应性高温. 这种哺乳动物可以承受变暖趋势和全球气候变化.
科学领域:
- 生理生态生态学 生理生态学
- 哺乳动物的温度调节
- 适应气候变化 适应气候变化
背景情况:
- 研究Tupaia belangeri的热耐受性对于了解其适应全球变暖的能力至关重要.
- 通过热中性区 (TNZ) 分析评估物种的热带起源,可以提供进化见解.
研究的目的:
- 为了确定Tupaia belangeri能够承受高温环境的能力.
- 通过TNZ分析,检查物种热带起源的证据.
- 评估适应全球变暖趋势的能力.
主要方法:
- Tupaia belangeri在28天内适应35°C的温度.
- 体温 (Tb),基底代谢率 (BMR) 和热导率 (C) 在各种环境温度 (Ta) 中测量.
- 对比了90种小型哺乳动物的TNZ和度分布.
主要成果:
- 高温适应导致Tb升高,BMR降低,TNZ缩小,热导率增加.
- 在高温条件下,TNZ在30°C-35°C之间趋同.
- 这两个适应群体的TNZ都属于热带高温区间.
结论:
- 图帕亚白通过增加Tb,降低新陈代谢率,增强散热,并转移其TNZ来适应热应激.
- 这种物种表现出强大的适应能力,适应更温暖的环境,在热应激下TNZ波动最小.
- 在热带高温区内的TNZ的位置提供了Tupaia belangeri热带起源的生理证据.
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