Evolutionary theories relating to aging predict that patterns of actuarial and reproductive senescence should be aligned, with a common onset of senescence set at the age of first reproduction. However, a few empirical studies reported asynchrony between actuarial and reproductive senescence. This asynchrony is expected to be particularly pronounced in organisms with indeterminate growth. Yet, this process is still poorly documented due to the lack of long-term demographic data on known-aged individuals. We investigated the asynchrony of actuarial and reproductive senescence in the European whip snake, Hierophis viridiflavus, an oviparous colubrid with indeterminate growth. Using demographic data collected over a 29-year period, we showed that females did not experience any fecundity loss late in life. In contrast, they suffered from an early, severe actuarial senescence. Our findings thus revealed a pronounced asynchrony in actuarial and reproductive senescence processes, a phenomenon that could be widespread across the tree of life.

中文翻译：

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精算和生殖衰老的异步性：不确定的种植者的教训

与衰老有关的进化理论预测，精算和生殖衰老的模式应保持一致，并在首次生殖时就开始出现衰老。然而，一些实证研究报道精算和生殖衰老之间存在异步性。预期这种不确定性在生长不确定的生物中尤其明显。但是，由于缺乏有关已知年龄个体的长期人口统计学数据，该过程的记录仍然很少。我们调查了欧洲鞭蛇Hierophis viridiflavus的精算和生殖衰老的异步性，卵生共生，生长不确定。使用在过去29年中收集的人口统计数据，我们表明女性在生命后期没有任何生育力下降。相反，他们患有早期，严重的精算衰老。因此，我们的发现揭示了精算和生殖衰老过程中明显的异步性，这种现象可能在生命之树中广泛传播。