门变化和发育温度影响在容忍度和可塑性之间进行权衡
Belinda van Heerwaarden1, Carla Sgrò2, Vanessa M Kellermann2,3
1School of BioSciences, The University of Melbourne, Parkville 3010 Victoria, Australia.
Proceedings. Biological sciences
|February 6, 2024
概括
耐热度较高的生物需要更强的适应刺激,挑战可塑性-耐受性权衡. 门变化显著影响我们如何研究ectotherms的气候变化适应.
科学领域:
- 生理生态生态学生理生态学
- 气候变化生物学
- 进化生物学是进化的生物学.
背景情况:
- 湿热生物面临着热极限,其表型可塑性被提出作为气候变化缓冲剂.
- 耐受性-可塑性权衡假设表明,更高的热耐受性与更低的可塑性相关.
- 对这种权衡的经验支持是混合的,可能是由于值转移等方法学因素.
研究的目的:
- 调查值转移对公差-可塑性权衡的影响.
- 为了检查Drosophila物种的干燥耐受性和临界热最大 (CT_MAX) 的硬化能力.
- 评估不同分布和对热/干燥应激的敏感性如何影响这些关系.
主要方法:
- 在Drosophila物种中检查了干燥耐受性和CT_MAX的值变化.
- 在不同发育适应温度下评估硬化能力.
- 分析了考虑不同硬化处理和发育温度的权衡模式.
主要成果:
- 在干燥耐受性和CT_MAX.中发现了值转移的证据.
- 耐热/干燥耐受性较高的物种需要更长的硬化期才能获得最大的反应.
- 更高的耐热性与在发育温度升高时硬化能力的降低有关.
结论:
- 值转移对于理解ECTotherms中的耐受性-可塑性权衡至关重要.
- 塑性耐受性权衡取决于背景,受硬化处理和发育温度的影响.
- 未来的研究必须纳入值转移和各种环境条件,以准确评估适应潜力.
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