能量的可用性影响了热表型可塑性的动态
Martine Camilla Graham1, Tim Burton2, Sigurd Einum1
1Department of Biology, Norwegian University of Science and Technology, Realfagbygget, NO-7491 Trondheim, Norway.
The Journal of experimental biology
|November 28, 2025
概括
食物的可用性在热耐受性方面显著影响表型可塑性. 有食物的生物表现出更强的适应温度变化的能力,这表明实验室研究可能高估了现实世界的弹性.
科学领域:
- 环境生理学环境生理学
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
背景情况:
- 现型可塑性对于生物适应环境变化,特别是温度波动至关重要.
- 了解限制这种可塑性的环境因素对于预测物种对气候变化的反应至关重要.
研究的目的:
- 研究食物供应在调节海洋两足动物 (Echinogammarus marinus) 热耐性的表型可塑性中的作用.
- 为了确定食物是否会影响热耐受性调整的速度和能力.
主要方法:
- *Echinogammarus marinus*的标本在不同时间内从10°C的基线适应到20°C.
- 应用了两种养治疗方法:养和不养.
- 通过测量30°C的固定时间来评估耐热度.
主要成果:
- 在被养和未养的群体中,热耐受性随着适应时间的增加而增加.
- 在被养的个体中,与未养的个体相比,随着适应而增加的热耐受性大约是养个体的两倍.
- 食物的可用性主要影响了耐热能力的容量组成部分,而不是变化速度.
结论:
- 食物的可用性是一个关键因素,限制了Echinogammarus marinus*热耐性的表型可塑性.
- 在最佳养条件下进行的实验室研究可能会高估生物体对自然环境中热应激的适应能力.
- 在评估生物体对气候变化的弹性时,必须考虑食物供应等生态因素.
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