Prabh Neel, Linnenbrink Miriam, Jovicic Milan, Guenther Anja
Max Planck Institute for Evolutionary Biology, Plön, Germany.
Ecol Lett. 2023 Jan;26(1):99-110. doi: 10.1111/ele.14137. Epub 2022 Nov 10.
The pace-of-life syndrome hypothesis provides a framework for the adaptive integration of behaviour, physiology and life history between and within species. It suggests that behaviours involving a risk of death or injury should co-vary with a higher allocation to fast reproduction. Empirical support for this hypothesis is mixed, presumably because important influencing factors such as environmental variation, are usually neglected. By experimentally manipulating food quality of wild mice living under semi-natural conditions for three generations, we show that individuals adjust their life history strategies and risk-taking behaviours as well as trait covariation (N = 1442). These phenotypic differences are correlated to differences in transcriptomic gene expression of primary metabolic processes in the liver while no changes in gene frequencies occurred. Our discussion emphasises the need to integrate the role of environmental conditions and phenotypic plasticity in shaping relationships among behaviour, physiology and life history in response to changing environmental conditions.
生活节奏综合征假说为物种间及物种内行为、生理和生活史的适应性整合提供了一个框架。该假说认为，涉及死亡或受伤风险的行为应与更高比例的快速繁殖共同变化。对这一假说的实证支持喜忧参半，大概是因为环境变化等重要影响因素通常被忽视了。通过对在半自然条件下生活三代的野生小鼠的食物质量进行实验性操控，我们发现个体调整了它们的生活史策略、冒险行为以及性状协变（N = 1442）。这些表型差异与肝脏中主要代谢过程的转录组基因表达差异相关，而基因频率没有变化。我们的讨论强调，需要整合环境条件和表型可塑性在应对不断变化的环境条件时塑造行为、生理和生活史之间关系中的作用。
