Levels of mate recognition within and between two Drosophila species and their hybrids
Levels of mate recognition within and between two Drosophila species and their hybrids
复制标题
DOI：
10.1086/286211
复制
发表时间：
1998-12-01
影响因子：
2.9
通讯作者：
Allan, RA
中科院分区：
文献类型：
--
作者：
Blows, MW;Allan, RA
如果性选择导致物种形成，物种内涉及配偶选择的特征需要能够在物种之间产生性隔离。我们调查了交配选择和性隔离之间的关联使用种间杂交两个兄弟物种，锯缘果蝇和果蝇birchii。一个加香实验表明，嗅觉参与了这两个物种之间的性隔离。利用30个种群的两个物种之间的杂交种的定量遗传分析表明，交配成功的杂交个体主要是由表皮碳氢化合物;交配成功和表皮碳氢化合物配置文件之间的平均遗传相关性为0.84，在某些情况下超过0.95。这两个物种的表皮碳氢化合物的多变量分析表明，有三个独立的混合表皮碳氢化合物，分离三个层次的组织：物种，性别，和性别内的物种。在交配选择的混合动力车使用的碳氢化合物包括那些分开的两个物种，表明物种特异性的字符可能会用于人口内的交配选择。种间正反交对角质层碳氢化合物与交配成功相关有重要影响，表明角质层碳氢化合物的表达与性别密切相关。
If sexual selection is to result in speciation, traits involved in mate choice within species need to be capable of producing sexual isolation between species. We investigated the association between mate choice and sexual isolation using interspecific hybrids between two sibling species, Drosophila serrata and Drosophila birchii. A perfuming experiment demonstrated that olfaction was involved in the sexual isolation between the two species. A quantitative genetic analysis using 30 populations of hybrids between the two species indicated that mating success in hybrid individuals was predominately determined by cuticular hydrocarbons; the average genetic correlation between mating success and cuticular hydrocarbon profile was 0.84, and in some instances exceeded 0.95. Multivariate analysis of the cuticular hydrocarbons of the two species revealed that there were three independent blends of cuticular hydrocarbons that separated three levels of organization: species, sex, and sex within species. The hydrocarbons used by hybrids in mate choice included those that separated the two species, demonstrating that species-specific characters may be used in mate choice within populations. The interspecific reciprocal cross had a major effect on which cuticular hydrocarbons were associated with mating success, indicating that the expression of the cuticular hydrocarbons was strongly sex linked.