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Messages from mortality: the evolution of death rates in the old

机译:死亡率信息:旧时死亡率的演变

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摘要

Ageing is an increase in mortality and/or decline in fertility with advancing age. Evolutionary theories predict that ageing will evolve in response to the pattern of externally imposed hazards to survival and fertility; a prediction confirmed in new empirical studies. Recent studies of large cohorts of experimental animals and of humans have revealed that mortality rates do not continue to accelerate at very advanced ages. It has been suggested that evolutionary theories cannot account for these mortality patterns; however, this challenge is more apparent than real. Heterogeneity between individuals can shape mortality trajectories for populations, and recent evolutionary theory can both account for such heterogeneity and accommodate late-age mortality patterns.
机译:衰老是指随着年龄的增长死亡率增加和/或生育能力下降。进化论预测衰老将根据对生存和生育的外部危害模式而演变;新的经验研究证实了这一预测。最近对大型实验动物和人类进行的研究表明,死亡率在非常高的年龄不会继续加速。有人提出,进化论不能解释这些死亡率模式。但是,这一挑战比实际更为明显。人与人之间的异质性可以影响人口的死亡率轨迹,而最新的进化论既可以解释这种异质性,又可以适应后期的死亡率模式。

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