Inbreeding depression increases with maternal age in a seed-feeding beetle.
Inbreeding depression increases with maternal age in a seed-feeding beetle.
复制标题
在以种子为食的甲虫中，近交抑制随着母体年龄的增加而增加。
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
D. H. Reed
中科院分区：
文献类型：
--
作者：
C. Fox;D. H. Reed
Background: Interactions between inbreeding and maternal effects have received little attention, and the effect of maternal age on inbreeding depression in offspring has been almost entirely neglected. Maternal age affects allocation of resources and other materials to offspring, which can affect the fitness consequences of inbreeding. An interaction between inbreeding and maternal age thus has the potential to produce complex and long-lasting effects on population dynamics and evolutionary trajectories. Hypothesis: Inbreeding depression in offspring fitness traits increases with maternal age at reproduction. Organism: Two populations of the seed-feeding beetle, Callosobruchus maculatus (Coleoptera: Chrysomelidae: Bruchinae). Methods: We compared the effect of maternal age on egg development/hatch, larval survival, and larval egg-to-adult development time between offspring of sib-mated parents (offspring inbreeding coefficient: F = 0.25; parental F = 0) and offspring of outbred parents (F = 0 for both parents and offspring). Results: The magnitude of inbreeding depression (proportional reduction in fitness of inbred relative to outbred beetles, δ) increased with maternal age for all measured traits (the proportion of eggs that developed, egg hatch, larval hatch-to-adult survival, and larval egg-to-adult development time). The age effect was large (δ increased by as much as 8% per day of maternal age), although the majority of this increase occurred only in the oldest age classes. There was no difference between the two beetle populations in the magnitude of this inbreeding–maternal age interaction.
DOI：
10.1073/pnas.0307605101
发表时间：
2004-05-18
影响因子：
11.1
作者：
Landis, GN;Abdueva, D;Tower, J
通讯作者：
Tower, J