FREQUENCY OF MULTIPLE INSEMINATION IN A NATURAL-POPULATION OF DROSOPHILA-MONTANA
FREQUENCY OF MULTIPLE INSEMINATION IN A NATURAL-POPULATION OF DROSOPHILA-MONTANA
复制标题
DOI：
10.1111/j.1601-5223.1992.tb00171.x
复制
发表时间：
1992-01-01
期刊：
影响因子：
2.7
通讯作者：
LANKINEN, P
中科院分区：
文献类型：
--
作者：
ASPI, J;LANKINEN, P
使用性别连锁等位酶基因座的母子数据，在北方果蝇蒙大拿种群中研究了多次授精的频率。与所研究的标记物相关的交配是随机的。在拥挤的实验室培养物中，杂合子后代比纯合子具有更高的生存能力，但在自然群体中没有发现与哈代-温伯格比例的偏差。在多重繁殖的后代中，雄性对后代的贡献并不均等，但第二个雄性繁殖的比例为 0.76。多次受精雌性的估计频率为 1.19 +/- 0.31，表明几乎所有雌性都携带至少两个雄性的精子。这一估计是果蝇自然种群中有史以来最大的估计。然而，种间比较可能不相关，因为多次授精的频率不一定反映多次交配的真实生命频率。讨论了当地生态和生活史特征（例如，均匀的年龄结构和交配的时间模式）对检测到的多次授精的高度的影响。
The frequency of multiple insemination was studied in a boreal Drosophila montana population using mother-offspring data for a sex-linked allozyme locus. Mating with respect to the marker studied was random. In crowded laboratory cultures the heterozygous offspring had higher viability than homozygotes, but no deviations from Hardy-Weinberg proportions were found in natural populations. In multiply sired progenies the males did not contribute equally to the progeny, but the proportion sired by the second male was 0.76. The estimated frequency of multiple inseminated females was 1.19 +/- 0.31, indicating that practically all the females carried sperm of at least two males. The estimate is the largest ever reported in natural populations of Drosophila. However, the interspecific comparisons may not be relevant, because the frequency of multiple insemination does not necessarily reflect the real lifetime frequency of multiple matings. The effects of local ecology and life history characters, e.g., the uniform age structure and the temporal patterning of matings, on the high degree of detected multiple inseminations are discussed.