Maternal effects mediated by maternal age: from life histories to population dynamics
Maternal effects mediated by maternal age: from life histories to population dynamics
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DOI：
10.1111/j.1365-2656.2008.01434.x
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发表时间：
2008-09-01
影响因子：
4.8
通讯作者：
Plaistow, S. J.
中科院分区：
文献类型：
--
作者：
Benton, T. G.;St Clair, J. J. H.;Plaistow, S. J.
1.母亲效应描述母亲如何影响后代的生活史。在许多分类群中，母性效应是由不同的资源分配给年轻人引起的，通常通过繁殖体大小的变化来识别，并影响个体性状和种群动态。使用一个实验室模型系统，土壤螨Sancassania berlesei，我们表明，控制卵的大小，年长的母亲产卵孵化后，发展更慢，并在较大的身体尺寸成熟。3.生活史的这种差异导致了持续多代的显著的种群动态效应，正如一项实验所证明的那样，该实验使用来自年轻或年老母亲的类似大小的卵子。从最初的队列成熟的差异导致人口结构和生活史的差异，传播随着时间的推移最初的差异。母亲年龄的影响，这是不相关的总供应的鸡蛋，因此是表型神秘的，可以有深远的影响，人口动态，特别是如果环境变化可以影响成年人口的年龄结构。
1. Maternal effects describe how mothers influence offspring life histories. In many taxa, maternal effects arise by differential resource allocation to young, often identified by variation in propagule size, and which affects individual traits and population dynamics.2. Using a laboratory model system, the soil mite Sancassania berlesei, we show that, controlling for egg size, older mothers lay eggs that hatch later, develop more slowly, and mature at larger body sizes.3. Such differences in life histories lead to marked population dynamical effects lasting for multiple generations, as evidenced by an experiment initiated with similarly sized eggs that came from young or old mothers. Differences in maturation from the initial cohort led to differences in population structure and life history that propagated the initial differences over time.4. Maternal-age effects, which are not related to gross provisioning of the egg and are therefore phenotypically cryptic, can have profound implications for population dynamics, especially if environmental variation can affect the age structure of the adult population.