DISPERSAL POLYMORPHISMS IN SUBDIVIDED POPULATIONS
DISPERSAL POLYMORPHISMS IN SUBDIVIDED POPULATIONS
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DOI：
10.1016/s0022-5193(86)80122-9
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发表时间：
1986-10-07
影响因子：
2
通讯作者：
FRANK, SA
中科院分区：
文献类型：
--
作者：
FRANK, SA
将Price在细分种群中分析自然选择的方法应用于稳定生境中的分散多态性策略问题。研究结果与最近发表的针对同一问题的更传统的孟德尔模型一致。此外，使用Price方法得到的结果更简单、更一般，预测模式下的因果演化机制更容易被识别。最有趣的新结果是，分散个体的平衡比例是分散风险和个体之间亲缘关系回归系数的简单函数，在没有分散的情况下，这些个体将竞争有限的局部资源。这个回归系数是指控制扩散表型的基因型。例如，当母亲控制其后代的表型时，那么回归是从母亲到分散前从当地群体中随机选择的后代；而当后代控制自己的表型时，回归是直接从后代到分散前随机选择的群体成员。这种使用控制基因型来计算回归的方法解释了之前作者提到的父母-后代在分散上的冲突的形式。这些结果的简单性和普遍性表明，Price的方法是研究一类被称为“亲属间博弈”的现象的有用方法。
Price''s method or analyzing natural selection in subdivided populations is applied to the problem of dispersal polymorphism strategies in a stable habitat. The results agree with the more traditional Mendelian models for this same problem that have recently been published. Further, by using Price''s method, the results obtained are simpler and more general, and the causal evolutionary mechanisms underlying the predicted patterns are more easily recognized. The most interesting new result is that the equilibrium proportion of dispersed individuals is a simple function of the risk of dispersing and the regression coefficient of relatedness among individuals who, in the absence of dispersal, would compete for a limited, local resource. This regression coefficient refers to the genotypes that control the dispersal phenotype. For example, when mothers control the phenotype of their progeny, then the regression is from the mother onto an offspring chosen randomly from the local group before dispersal; while when offspring control their own phenotype, the regression is taken directly from offspring onto a randomly chosen cohort member before dispersal. This use of controlling genotypes to calculate regressions explains the form of the parent-offspring conflict over dispersal noted by previous authors. The simplicity and generality of these results suggest that Price''s method is a useful approach for studying the class of phenomena known as "games among relatives".