Patterns of actuarial senescence can be highly variable among species. Previous comparative analyses revealed that both age at the onset of senescence and rates of senescence are linked to position of a species along the fast-slow life-history continuum. As there are few long-term datasets of wild populations with known-age individuals, intraspecific (i.e. between-population) variation in senescence is understudied and limited to comparisons of wild and captive populations of the same species, mostly birds and mammals. In this paper, we examined how population position along the fast-slow life history continuum affects intraspecific variation in senescence in an amphibian, Bombina variegata. We used capture-recapture data collected in four populations with contrasting life history strategies. Senescence trajectories were analyzed using Bayesian capture-recapture models. We show that in fast populations the onset of actuarial senescence was earlier and individuals aged at a faster rate than individuals in slow populations. Our study provides one of the few empirical examples of among-population variation in actuarial senescence patterns in the wild and confirms that the fast-slow life history gradient is associated with both macroevolutionary and microevolutionary patterns of actuarial senescence.

中文翻译：

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沿快慢生活史连续体的人口位置预测精算衰老的种内变异

精算衰老的模式可能因物种而异。先前的比较分析表明，衰老开始时的年龄和衰老率都与物种在快-慢生活史连续体中的位置有关。由于具有已知年龄个体的野生种群的长期数据集很少，因此对衰老的种内（即种群间）变异研究不足，仅限于对同一物种（主要是鸟类和哺乳动物）的野生和圈养种群进行比较。在本文中，我们研究了沿着快慢生活史连续体的种群位置如何影响两栖动物 Bombina variegata 衰老的种内变异。我们使用了在四个具有对比生活史策略的人群中收集的捕获-再捕获数据。使用贝叶斯捕获-再捕获模型分析衰老轨迹。我们表明，在快速人群中，精算衰老的开始更早，并且个体比慢速人群中的个体衰老速度更快。我们的研究提供了为数不多的关于野外精算衰老模式的种群间变异的实证例子之一，并证实了快-慢的生活史梯度与精算衰老的宏观进化和微观进化模式相关。