THE INFLUENCE OF MATING SYSTEM AND OVERLAPPING GENERATIONS ON EFFECTIVE POPULATION SIZE
THE INFLUENCE OF MATING SYSTEM AND OVERLAPPING GENERATIONS ON EFFECTIVE POPULATION SIZE
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交配系统和重叠世代对有效种群规模的影响
DOI：
10.1111/j.1558-5646.1993.tb02158.x
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发表时间：
1993
期刊：
影响因子：
3.3
通讯作者：
L. Nunney
中科院分区：
文献类型：
--
作者：
L. Nunney
有效种群大小（Ne）强烈依赖于交配系统和世代时间。这两个因素相互作用，在许多情况下，Ne接近N/2，其中N是成年人的数量。这被证明是简单和高度一夫多妻制交配系统的情况。随机联盟的配子（RUG）和一夫一妻制是两个简单的系统以前使用的估计Ne，在这里第三，彩票一夫多妻制，被添加。彩票一夫多妻制，其中所有的男性平等地竞争女性，结果在较低的Ne比任何RUG或一夫一妻制！考虑到世代不重叠，常染色体基因座减少33%，性连锁基因座减少25%。在世代时间较短的情况下，高度一夫多妻的交配系统，即后宫一夫多妻和显性一夫多妻，能产生很低的Ne/N值。然而，随着T的延长，Ne接近N/2。性别比例偏差的影响取决于交配系统，一般来说，是不对称的。由于成年人生存或招募的性别差异，可能会发生偏倚，并且考虑到生存偏倚，性别比例偏倚改变Ne的可能性大大降低。幼鱼的数量也有一定的影响：随着成熟时间的延长，Ne增加。
The effective population size (Ne) depends strongly on mating system and generation time. These two factors interact such that, under many circumstances, Ne is close to N/2, where N is the number of adults. This is shown to be the case for both simple and highly polygynous mating systems. The random union of gametes (RUG) and monogamy are two simple systems previously used in estimating Ne, and here a third, lottery polygyny, is added. Lottery polygyny, in which all males compete equally for females, results in a lower Ne than either RUG or monogamy! Given nonoverlapping generations the reduction is 33% for autosomal loci and 25% for sex‐linked loci. The highly polygynous mating systems, harem polygyny and dominance polygyny, can give very low values of Ne/N when the generation time (T) is short. However, as T is lengthened, Ne approaches N/2. The influence of a biased sex ratio depends on the mating system and, in general, is not symmetrical. Biases can occur because of sex differences in either survival or recruitment of adults, and the potential for a sex‐ratio bias to change Ne is much reduced given a survival bias. The number of juveniles present also has some influence: as the maturation time is lengthened, Ne increases.
直接评估遗传漂变在确定 Euphyyas editha 种群等位基因频率变异中的作用。
影响因子：
3.3
作者：
Mueller,LD;Wilcox,BA;Ehrlich,PR;Heckel,DG;Murphy,DD
通讯作者：
Murphy,DD