工人天线中的特定任务的气味受体表达表明,感官过器调节了的分工
Marcel A Caminer1, Romain Libbrecht2,3, Megha Majoe2
1Institute of Organismic and Molecular Evolution, Johannes Gutenberg University Mainz, Mainz, Germany. marcelcaminer@gmail.com.
Communications biology
|October 2, 2023
概括
昆虫工人由于不同的感官感知而专门从事任务,而不仅仅是响应值. 天线基因表达揭示了护士和采集者的独特的嗅觉环境,支持分工中的感觉过器.
科学领域:
- 昆虫的行为和神经生物学
- 社会昆虫 劳动的分工.
- 嗅觉感官处理 嗅觉感官处理
背景情况:
- 劳动分工 (DOL) 是昆虫社会的一个标志,专门的个人执行不同的任务.
- 现有的理论表明,任务专业化源于工人对刺激的反应值的变化.
- 这项研究挑战了传统观点,提出刺激检测效率的差异作为DOL的驱动因素.
研究的目的:
- 测试一种假设,即的劳动分工源于检测特定任务刺激的差异效率.
- 调查感官感知,特别是嗅觉的变化是否是的任务专业化的基础.
- 探索行为表型之间的感官差异的分子基础.
主要方法:
- 利用转录学来分析护士和采食 (Temnothorax longispinosus) 的天线和大脑中的mRNA表达水平.
- 在不同的行为品种之间比较基因表达特征,以确定分子差异.
- 集中分析嗅觉受体和基因表达在天线,关键的感官器官昆虫通信.
主要成果:
- 在护士和采集者之间,与大脑相比,在天线 (七倍) 中发现显著更多的差异性表达基因.
- 在所有气味受体的一半中确定了差异性表达,表明嗅觉感知发生了变化.
- 在哺乳的天线中观察到过多的9个外显子基因家族的上调.
结论:
- 工人的分工受到他们感知与任务相关的嗅觉线索的能力变化的影响.
- 在基因表达差异中反映的天线感官过器,使工人倾向于专门从事特定任务.
- 这些发现支持一种模型,即感官感知效率,而不仅仅是响应值,驱动着社会昆虫的任务专业化.
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