Department of Ecology & Evolutionary Biology, Princeton University, Princeton, New Jersey 08544, USA.
Ann N Y Acad Sci. 2010 Aug;1204:127-38. doi: 10.1111/j.1749-6632.2010.05531.x.
The pace of reproductive aging has been of considerable interest, especially in regard to the long postreproductive period in modern women. Here we use data for both sexes from a 37-year longitudinal study of a wild baboon population to place reproductive aging within a life history context for this species, a primate relative of humans that evolved in the same savannah habitat as humans did. We examine the patterns and pace of reproductive aging, including birth rates and reproductive hormones for both sexes, and compare reproductive aging to age-related changes in several other traits. Reproductive senescence occurs later in baboon females than males. Delayed senescence in females relative to males is also found in several other traits, such as dominance status and body condition, but not in molar wear or glucocorticoid profiles. Survival, health, and well-being are the product of risk factors in morphological, physiological, and behavioral traits that differ in rate of senescence and in dependence on social or ecological conditions; some will be very sensitive to differences in circumstances and others less so.
生殖衰老的速度一直是人们非常关注的问题，尤其是在现代女性具有漫长的生育后期这方面。在这里，我们利用来自一个长达 37 年的野生狒狒种群纵向研究的两性数据，将生殖衰老置于该物种的生活史背景中进行研究，因为狒狒是人类的灵长类近亲，与人类在同一稀树草原栖息地进化。我们研究了生殖衰老的模式和速度，包括两性的出生率和生殖激素，并将生殖衰老与其他几个特征的年龄相关变化进行了比较。在雌性狒狒中，生殖衰老发生得比雄性晚。在几个其他特征中，如支配地位和身体状况，也发现了雌性相对于雄性的衰老延迟，但在磨牙磨损或糖皮质激素特征中没有发现。生存、健康和幸福是形态、生理和行为特征中风险因素的产物，这些特征在衰老速度和对社会或生态条件的依赖程度上存在差异；有些因素对环境差异非常敏感，而有些因素则不太敏感。
