The Contributions of Maternal Age Heterogeneity to Variance in Lifetime Reproductive Output
The Contributions of Maternal Age Heterogeneity to Variance in Lifetime Reproductive Output
复制标题
母亲年龄异质性对终生生殖产出差异的贡献
DOI:
10.1086/718716
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Gribble, Kristin E.
中科院分区:
文献类型:
--
作者:
van Daalen, Silke F.;Hernández, Christina M.;Caswell, Hal;Neubert, Michael G.;Gribble, Kristin E.
Variance among individuals in fitness components reflects both genuine heterogeneity between individuals and stochasticity in events experienced along the life cycle. Maternal age represents a form of heterogeneity that affects both the mean and the variance of lifetime reproductive output (LRO). Here, we quantify the relative contribution of maternal age heterogeneity to the variance in LRO using individual-level laboratory data on the rotiferBrachionus manjavacasto parameterize a multistate age × maternal age matrix model. InB. manjavacas, advanced maternal age has large negative effects on offspring survival and fertility. We used multistate Markov chains with rewards to quantify the contributions to variance in LRO of heterogeneity and of the stochasticity inherent in the outcomes of probabilistic transitions and reproductive events. Under laboratory conditions, maternal age heterogeneity contributes 26% of the variance in LRO. The contribution changes when mortality and fertility are reduced to mimic more ecologically relevant environments. Over the parameter space where populations are near stationarity, maternal age heterogeneity contributes an average of 3% of the variance. Thus, the contributions of maternal age heterogeneity and individual stochasticity can be expected to depend strongly on environmental conditions; over most of the parameter space, the variance in LRO is dominated by stochasticity.
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影响因子:
2
作者:
HAMILTON, WD
通讯作者:
HAMILTON, WD
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Stuart Barker
通讯作者:
Stuart Barker
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
M. Bogdanova;R. Nager;P. Monaghan
通讯作者:
P. Monaghan
影响因子:
5.2
作者:
Fox, CW;Bush, ML;Wallin, WG
通讯作者:
Wallin, WG
DOI:
--
发表时间:
2005
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
作者:
O. Jones;M. Crawley;J. Pilkington;J. Pemberton
通讯作者:
J. Pemberton