The influence of parental relatedness on reproductive success
The influence of parental relatedness on reproductive success
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DOI：
10.1098/rspb.2001.1751
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发表时间：
2001-10-07
影响因子：
4.7
通讯作者：
Coulson, T
中科院分区：
文献类型：
--
作者：
Amos, W;Wilmer, JW;Coulson, T
近亲繁殖抑制如何降低乱伦交配中的繁殖力的研究主导了适应度和父母相似性之间的关系。一个普遍存在的隐含假设是，没有异常密切关系的父母所生的个体的成年适应性（繁殖）或多或少是相等的。三个长寿的脊椎动物，长鳍领航鲸，灰海豹和流浪信天翁的检查显示显着的负相关性之间的父母相似性和遗传估计的繁殖成功。原则上，这种效应可能是由少数低质量的近交个体驱动的。然而，当数据被划分为高于平均水平和低于平均水平的亲本相似性的个体时，我们没有发现斜率不同的证据，这表明在亲本相似性值的整个范围内，效果或多或少是相似的。因此，我们的研究结果揭示了一个选择压力，有利于不仅避免近亲繁殖，但也选择最大的不同的队友。
The relationship between fitness and parental similarity has been dominated by studies of how inbreeding depression lowers fecundity in incestuous matings. A widespread implicit assumption is that adult fitness (reproduction) of individuals born to parents who are not unusually closely related is more or less equal. Examination of three long-lived vertebrates, the long-finned pilot whale, the grey seal and the wandering albatross reveals significant negative relationships between parental similarity and genetic estimates of reproductive success. This effect could, in principle, be driven by a small number of low quality, inbred individuals. However, when the data are partitioned into individuals with above average and below average parental similarity, we find no evidence that the slopes differ, suggesting that the effect is more or less similar across the full range of parental similarity values. Our results thus uncover a selective pressure that favours not only inbreeding avoidance, but also the selection of maximally dissimilar mates.