Effects of selection and drift on genital morphology and accessory gland proteins in natural Drosophila melanogaster populations

选择和漂移对自然果蝇种群生殖器形态和辅助腺蛋白的影响

• 批准号: 51687962
• 负责人: Dr. Martin Andreas Schäfer
• 金额: --
• 依托单位: Institut für Populationsgenetik
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/51687962?language=en
• 关键词: Effects; selection; drift; genital; morphology

In insects and in particular in Drosophila, male genitalia and accessory gland proteins (Acp’s) show strikingly rapid and divergent evolution. Diversifying sexual selection rather than neutrality has been invoked to explain the patterns. However, the empirical evidence for this hypothesis remains scarce and largely restricted to inter-specific comparisons focussing on long-term evolutionary changes. This proposal on D. melanogaster addresses the relative impact of neutral genetic drift and selection operating on genital shape and Acp’s by comparing multiple natural populations. Furthermore, by contrasting different sets of populations with different population structure, my approach will be in particular informative to distinguish between different selection regimes. The results will provide insights into the evolutionary dynamics of male reproductive characters in general, but also into the role of sexual selection leading to population divergence before reproductive isolation occurred.

在昆虫中，特别是在果蝇中，雄性生殖器和附属腺蛋白（Acp’s）表现出惊人的快速和多样化的进化。多样化的性选择而不是中性性选择被用来解释这种模式。然而，这一假设的经验证据仍然很少，并且主要局限于关注长期进化变化的种间比较。本文通过对不同自然种群的比较，探讨了中性遗传漂变和自然选择对生殖器官形状和Acp的相对影响。此外，通过对比具有不同种群结构的不同种群，我的方法将特别有助于区分不同的选择制度。研究结果将为研究雄性生殖特征的进化动力学提供深入的见解，同时也有助于研究在生殖隔离发生之前，性选择在种群分化中的作用。