性别比例、性别转变与自然选择。
Sex ratio, sex change, and natural selection.
作者信息
Leigh E G, Charnov E L, Warner R R
出版信息
Proc Natl Acad Sci U S A. 1976 Oct;73(10):3656-60. doi: 10.1073/pnas.73.10.3656.
We describe the analogy between the theory of natural selection on sex ratio in newborn gonochores (which will not change sex), and on the age of sex change in sequential hermaphrodites (which are all born into one sex and change to the other later on). We also discuss the conditions under which natural selection favors sequential hermaphrodites over gonochores and vice versa. We show that, in a nearly stable population of nearly constant age composition, selection favors a rare mutant if it increases the prospective reproduction of its newborn bearers that are (or while they are) members of one sex by a percentage exceeding the percentage loss to the other sex.
我们描述了在新生雌雄异体生物（其性别不会改变）中性别比例的自然选择理论，与在顺序性雌雄同体生物（其出生时为一种性别，之后转变为另一种性别）中性别转变年龄的自然选择理论之间的类比关系。我们还讨论了自然选择更青睐顺序性雌雄同体生物而非雌雄异体生物，以及反之亦然的条件。我们表明，在年龄组成近乎恒定的近乎稳定的种群中，如果一个罕见突变体能够使其新生携带者（当其为一种性别的成员时）的预期繁殖增加的百分比超过对另一种性别的损失百分比，那么自然选择就会青睐该突变体。
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