The evolution of polyandry: patterns of genotypic variation in female mating frequency, male fertilization success and a test of the sexy‐sperm hypothesis
The evolution of polyandry: patterns of genotypic variation in female mating frequency, male fertilization success and a test of the sexy‐sperm hypothesis
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一妻多夫的演变：女性交配频率的基因型变异模式、男性受精成功率和性感精子假说的检验
DOI：
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发表时间：
2003
影响因子：
2.1
通讯作者：
Leigh W. Simmons
中科院分区：
文献类型：
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作者：
Leigh W. Simmons
性感精子假说预测，女性通过一妻多夫为后代获得间接利益，其形式是增加儿子的受精成功率。我使用定量遗传学方法，使用田野蟋蟀Teleogryllus oceanicus来测试性感精子假设。以前对该物种的研究表明，当两个或多个雄性竞争时，受精成功率存在相当大的表型差异。父权制和一妻多夫制的广义遗传力都很高。基因型变异模式与X连锁遗传和/或母体对这些性状的影响一致。因此，遗传结构排除了一妻多夫通过性精子过程的进化。因此，性精子假说所预测的儿子的父亲身份和女儿的一妻多夫制之间的正遗传相关性是不存在的。有显着的遗传变异的投资由女性在卵巢和男性在附属腺。令人惊讶的是，这两个特征之间存在很强的遗传相关性。这种遗传相关性的意义，共同进化的男性精液产品和一妻多夫制进行了讨论。
Abstract The sexy‐sperm hypothesis predicts that females obtain indirect benefits for their offspring via polyandy, in the form of increased fertilization success for their sons. I use a quantitative genetic approach to test the sexy‐sperm hypothesis using the field cricket Teleogryllus oceanicus. Previous studies of this species have shown considerable phenotypic variation in fertilization success when two or more males compete. There were high broad‐sense heritabilities for both paternity and polyandry. Patterns of genotypic variance were consistent with X‐linked inheritance and/or maternal effects on these traits. The genetic architecture therefore precludes the evolution of polyandry via a sexy‐sperm process. Thus the positive genetic correlation between paternity in sons and polyandry in daughters predicted by the sexy‐sperm hypothesis was absent. There was significant heritable variation in the investment by females in ovaries and by males in the accessory gland. Surprisingly there was a very strong genetic correlation between these two traits. The significance of this genetic correlation for the coevolution of male seminal products and polyandry is discussed.
影响因子：
3.3
作者：
Hughes,KA
通讯作者：
Hughes,KA
影响因子：
3.3
作者：
D. Houle
通讯作者：
D. Houle