HARD AND SOFT SELECTION REVISITED
HARD AND SOFT SELECTION REVISITED
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DOI：
10.1111/j.1558-5646.1975.tb00836.x
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发表时间：
1975-01-01
期刊：
影响因子：
3.3
通讯作者：
WALLACE, B
中科院分区：
文献类型：
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作者：
WALLACE, B
硬选择和软选择的概念（Wallace，1968，1970）已经被回顾。青少年死亡率以及刚性选择和柔性选择（Dobzhansky，1962，1970）已被证明与已发表的软选择例子所说明的观点无关。硬选择与密度和频率无关;软选择与密度和频率相关。在这种分类下，现在被称为“密度依赖”的选择将是与频率无关的，而被称为“频率依赖”的选择将是与密度无关的（图1）。对Clarke（1973 a，B）提出的生态学模型的分析表明，在一定条件下，α-选择、k-选择和w-选择都可称为软选择。克拉克的α-选择总是软的;他的k-选择有时可能只依赖于密度。
The concepts of hard and soft selection (Wallace, 1968, 1970) have been reviewed. Juvenile mortality as well as rigid and flexible selection (Dobzhansky, 1962, 1970) have been shown to be unrelated to the ideas illustrated by the published examples of soft selection. The following definitions are suggested: hard selection is both density and frequency independent; soft selection is both density and frequency dependent. Under this classification, selection that is now referred to as 'density-dependent' would be frequency-independent while that known as 'frequency-dependent' would be density-independent (Fig. 1). An analysis of an ecological model presented by Clarke (1973a, b) reveals that under certain conditions α-, k-, and w-selection all qualify as soft selection. Clarke's α-selection is always soft; his k-selection may at times be density-dependent only.