The courtship song of African Drosophila melanogaster
The courtship song of African Drosophila melanogaster
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DOI：
10.1046/j.1420-9101.2000.00148.x
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发表时间：
2000-01-01
影响因子：
2.1
通讯作者：
Ritchie, MG
中科院分区：
文献类型：
--
作者：
Colegrave, N;Hollocher, H;Ritchie, MG
多年来，人们一直认为黑腹果蝇是相对的全交配型，在配偶识别系统中没有分化。最近的研究表明，来自非洲的苍蝇在信息素和选择性交配方面存在差异。来自津巴布韦的菌株表现出强烈的性隔离。我们发现，求偶歌，一个重要的交配信号的脉冲间隔（IPI），是非洲苍蝇之间的异常短。津巴布韦苍蝇有最短的IPI，但没有相关性的交配，这表明在性隔离的直接作用不大。染色体替换表明，IPI差异主要是由于染色体III上的基因，与其他染色体的显着相互作用。可能影响果蝇黑腹组性隔离的几个特征似乎定位于这条染色体。重要遗传差异的集中可能意味着相互作用效应反映了遗传背景对与染色体III相关的变化的次级共适应。
For many years it was thought that Drosophila melanogaster was relatively panmictic, without differentiation in the Mate Recognition System. Recent studies have demonstrated that flies from Africa vary in pheromones and assortative mating. Strains from Zimbabwe show strong sexual isolation from others. We show that the interpulse interval (IPI) of courtship song, an important mating signal, is unusually short among African flies. Zimbabwean flies have the shortest IPI, but there is no correlation with assortative mating, suggesting little direct role in sexual isolation. Chromosome replacements show that the IPI difference is largely due to genes on chromosome III, with significant interactions involving other chromosomes. Several traits potentially influencing sexual isolation among the melanogaster group of Drosophila seem to be localized to this chromosome. A concentration of important genetic differences might mean that the interaction effects reflect secondary coadaptation of the genetic background to changes associated with chromosome III.