当前位置: X-MOL 学术PLOS Biol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Parental breeding age effects on descendants' longevity interact over 2 generations in matrilines and patrilines.
PLOS Biology ( IF 7.8 ) Pub Date : 2019-11-25 , DOI: 10.1371/journal.pbio.3000556
Zachariah Wylde 1 , Foteini Spagopoulou 2 , Amy K Hooper 1 , Alexei A Maklakov 2, 3 , Russell Bonduriansky 1
Affiliation  

Individuals within populations vary enormously in mortality risk and longevity, but the causes of this variation remain poorly understood. A potentially important and phylogenetically widespread source of such variation is maternal age at breeding, which typically has negative effects on offspring longevity. Here, we show that paternal age can affect offspring longevity as strongly as maternal age does and that breeding age effects can interact over 2 generations in both matrilines and patrilines. We manipulated maternal and paternal ages at breeding over 2 generations in the neriid fly Telostylinus angusticollis. To determine whether breeding age effects can be modulated by the environment, we also manipulated larval diet and male competitive environment in the first generation. We found separate and interactive effects of parental and grand-parental ages at breeding on descendants' mortality rate and life span in both matrilines and patrilines. These breeding age effects were not modulated by grand-parental larval diet quality or competitive environment. Our findings suggest that variation in maternal and paternal ages at breeding could contribute substantially to intrapopulation variation in mortality and longevity.

中文翻译:


亲代繁殖年龄对后代寿命的影响在母系和父系两代人中相互作用。



人群中的个体在死亡风险和寿命方面存在巨大差异,但这种差异的原因仍然知之甚少。这种变异的一个潜在重要且系统发育广泛的来源是母亲的繁殖年龄,这通常会对后代的寿命产生负面影响。在这里,我们表明,父亲年龄对后代寿命的影响与母亲年龄一样强烈,并且繁殖年龄的影响可以在母系和父系的两代人中相互作用。我们在巢蝇 Telostylinus angusticollis 的繁殖过程中控制了母本和父本的年龄,超过 2 代。为了确定环境是否可以调节繁殖年龄的影响,我们还操纵了第一代幼虫的饮食和雄性竞争环境。我们发现父母和祖父母的繁殖年龄对母系和父系后代的死亡率和寿命都有单独和相互作用的影响。这些繁殖年龄的影响不受祖父母幼虫饮食质量或竞争环境的调节。我们的研究结果表明,繁殖时母亲和父亲年龄的差异可能会极大地影响种群内死亡率和寿命的差异。
更新日期:2019-12-03
down
wechat
bug