Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan.
J Theor Biol. 2010 Oct 7;266(3):367-73. doi: 10.1016/j.jtbi.2010.07.001. Epub 2010 Jul 8.
In offspring production, with whom are the maternally derived (madumnal), paternally derived (padumnal), and maternal genes in conflict? I developed a model, in which those genes independently regulate resource absorption of developing offspring, and offspring with a high realized resource absorption rate may become large, but may suffer abortion due to overgrowth. I analyzed two cases: maternal control is weak (maternal genes cannot completely inhibit the resource demand by the madumnal or the padumnal genes) and is strong (maternal genes can completely inhibit it). I found that, under weak maternal control, the maternal genes inhibit resource absorption, but the madumnal and padumnal genes enhance it if the abortion cost of overgrowth is low. The maternal and madumnal genes inhibit resource absorption, but the padumnal genes enhance it if the cost is high. Under strong maternal control, the maternal genes inhibit resource absorption, but the madumnal and padumnal genes enhance it irrespective of the degree of abortion cost. I also found that the effects of offspring abortion on an ESS size and number of offspring when independent are large under weak maternal control, but are moderated under strong maternal control.
在后代生产中，与母体来源（madumnal）、父体来源（padumnal）和母体基因发生冲突的是哪些基因？我建立了一个模型，其中这些基因独立地调节发育中后代的资源吸收，具有高实现资源吸收率的后代可能会变得很大，但可能由于过度生长而流产。我分析了两种情况：母体控制较弱（母体基因无法完全抑制 madumnal 或 padumnal 基因的资源需求）和较强（母体基因可以完全抑制它）。我发现，在母体控制较弱的情况下，如果过度生长的流产成本较低，母体基因抑制资源吸收，但 madumnal 和 padumnal 基因会增强它。母体和 madumnal 基因抑制资源吸收，但如果成本较高，padumnal 基因会增强它。在母体控制较强的情况下，母体基因抑制资源吸收，但 madumnal 和 padumnal 基因无论流产成本的程度如何都会增强它。我还发现，在母体控制较弱的情况下，后代流产对 ESS 大小和独立后代数量的影响较大，但在母体控制较强的情况下，这种影响会得到缓和。
