Maternal death and offspring fitness in multiple wild primates

Maternal death and offspring fitness in multiple wild primates
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多种野生灵长类动物的孕产妇死亡和后代健康

DOI:
10.1073/pnas.2015317118
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发表时间:
2020
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
通讯作者:
Stoinski, Tara S.
Stoinski, Tara S.
中科院分区:
--
文献类型:
--
作者:
Zipple, Matthew N.;Altmann, Jeanne;Campos, Fernando A.;Cords, Marina;Fedigan, Linda M.;Lawler, Richard R.;Lonsdorf, Elizabeth V.;Perry, Susan;Pusey, Anne E.;Stoinski, Tara S.

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灵长类动物的后代往往在断奶年龄之后还要依赖母亲,而在生命早期经历过母亲死亡的后代在整个生命周期中的适应能力会大大降低。在这里,我们利用来自8个野生灵长类动物种群(7个物种)的数据来研究两个未被充分认识的途径,将早期孕产妇死亡和后代健康联系起来,这与孤儿对后代生存的直接影响不同。首先,我们发现,对于七个物种中的五个,在母亲死亡之前的几年里,后代面临着生存减少,而母亲仍然活着。其次,我们确定了三个物种(猕猴,狒狒和蓝猴)的早期孕产妇死亡的代际效应,例如,在一代经历的早期孕产妇死亡导致后代存活率降低。我们的研究结果对灵长类动物缓慢生活史的进化具有重要意义,因为它们表明,母亲的条件和生存对后代的适应性比以前意识到的更重要。
Primate offspring often depend on their mothers well beyond the age of weaning, and offspring that experience maternal death in early life can suffer substantial reductions in fitness across the life span. Here, we leverage data from eight wild primate populations (seven species) to examine two underappreciated pathways linking early maternal death and offspring fitness that are distinct from direct effects of orphaning on offspring survival. First, we show that, for five of the seven species, offspring face reduced survival during the years immediately preceding maternal death, while the mother is still alive. Second, we identify an intergenerational effect of early maternal loss in three species (muriquis, baboons, and blue monkeys), such that early maternal death experienced in one generation leads to reduced offspring survival in the next. Our results have important implications for the evolution of slow life histories in primates, as they suggest that maternal condition and survival are more important for offspring fitness than previously realized.
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