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系统的方法来评估高温限制动物的生育能力

Amanda Bretman¹, Claudia Fricke², Julian Baur³

¹Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, United Kingdom.

Journal of evolutionary biology

|February 13, 2024

概括

热生育极限 (TFLs) 低于临界热极限 (CTLs),更好地预测物种分布和灭绝风险. 提出了标准化的方法来评估不同种类的生育能力对热的影响.

科学领域:

生态生态学生态生态学
进化生物学进化生物学
生理学生理学生理学

背景情况:

临界热极限 (CTL) 评估温度对生存和功能的影响,为气候变化弹性预测提供信息.
最近对虫的研究表明,热生育极限 (TFL) 通常低于CTL,并且更好地预测物种分布和灭绝风险.
生育能力通常对温度变化比生存更敏感,这表明对变暖的脆弱性更大.

研究的目的:

解决评估对生育能力的热影响的数据和方法上的差距.
提出标准化的方法来评估陆地无脊椎动物生育能力的热效应.
为了使基于生育能力的热极限评估在各个种群中得到更广泛的应用.

主要方法:

用短期热冲击来确定TFL的"黄金标准"协议,模拟气候变化驱动的极端热事件.
一个标准化的协议,用于评估生育的热敏感性 (TSF).适应各种生物体.
一个用于量化自然环境中的生育损失的框架,补充基于实验室的方法.

主要成果:

TFLs通常低于CTLs,表明生育率是热应激的更敏感指标.
与生存影响相比,生育能力的丧失发生在较少的极端温度下.
目前的TFL数据有限,主要是Drosophila,阻碍了更广泛的生态预测.

结论:

标准化方法对于对不同物种生育能力的热影响的一致评估至关重要.
生育能力对温度的敏感性对气候变化下的物种构成的威胁比以前认为的更为重大.
实施这些标准化的方法将允许对物种对全球气温上升的反应进行可靠的预测.

关键词:

临界热极限是指临界的热极限.热量热量热量热量热量生殖生殖的繁殖.热生育率的极限值是什么生育能力的热敏感性.

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