通过多个激素开关在Drosophila中的男性性行为的进化基础
Youcef Ouadah1, Thomas H Naragon2, Hayley Smihula2
1Division of Biology and Biological Engineering, Tianqiao and Chrissy Chen Institute for Neuroscience, and Howard Hughes Medical Institute, Caltech; Pasadena, CA, USA.
bioRxiv : the preprint server for biology
|November 24, 2025
概括
男性果 (Drosophila) 显示出强烈的男性之间的求爱,这是由于费洛蒙的进化变化. 这些化学信号,如cVA,影响交配行为和物种识别,影响进化.
科学领域:
- 进化生物学是进化的生物学.
- 动物行为 动物行为
- 神经伦理学 神经伦理学
背景情况:
- 在一些Drosophila物种中观察到男性间的性行为.
- 费洛蒙在调节昆虫的交配行为中起着至关重要的作用.
- 了解行为的遗传和化学基础是进化研究的关键.
研究的目的:
- 研究Drosophila santomea中强壮的男性间性行为背后的进化机制.
- 为了确定有助于改变D. santomea.中求爱的特定费洛蒙变化.
- 探索费洛蒙价值转移在社会行为的演变中的作用.
主要方法:
- 行为分析量化男性之间的求爱.
- 气色谱-质谱 (GC-MS) 用于分析皮质碳化合物概况.
- 对相关物种的费洛蒙水平和行为反应进行比较分析.
主要成果:
- 雄性Drosophila santomea表现出强烈的男性之间的求爱和减少的侵略性.
- 关键的费洛蒙变化包括男性的7-tricosene增加和cis-vaccenyl acetate (cVA) 显著减少.
- D. santomea的雌性表现出对cVA的厌恶,与相关物种形成鲜明对比.
结论:
- 费洛蒙感知和生产的进化转变推动了男性之间的性行为的出现.
- 女性cVA厌恶和男性cVA减少的共同进化可能会阻止杂交.
- 在D. persimilis中,费洛蒙的融合表明了社会行为的类似的进化途径.
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