Harshman Lawrence G, Futuyma Douglas J
Department of Ecology and Evolution, State University of New York at Stony Brook, Stony Brook, NY, 11794.
Evolution. 1985 Mar;39(2):315-324. doi: 10.1111/j.1558-5646.1985.tb05669.x.
A survey of spatial and temporal variation in the frequency of electrophoretically defined genotypes in the geometrid moth Alsophila pometaria revealed a high diversity of uncommon or rare asexual genotypes and clinal distributions of two of the more common clones. There was substantial year-to-year variation in genotype frequencies in seven of eleven sites. Progeny tests have revealed that sexual reproduction is uncommon in two populations and that new asexual genotypes arise from the sexual population. The recurrent origin of asexual genotypes is likely to account for the high genetic and ecological diversity of the asexual contingent of this species' populations, in contrast to the lower genetic diversity in some obligately asexual species in which such recruitment does not occur.
一项对尺蛾云杉绿卷蛾电泳定义基因型频率的时空变化调查显示，存在高度多样的罕见或稀有无性基因型，以及两个较常见克隆的渐变群分布。在11个地点中的7个，基因型频率存在显著的逐年变化。后代测试表明，有性生殖在两个种群中不常见，新的无性基因型源自有性种群。无性基因型的反复起源可能是该物种种群无性群体具有高遗传和生态多样性的原因，这与一些专性无性物种中由于不存在此类补充而导致的较低遗传多样性形成对比。
