海洋鸟类的触觉鼻尖器官表明了深层鸟类简易形态的保护
Carla J du Toit1,2,3, Alexander L Bond4, Susan J Cunningham2,3
1Department of Earth Sciences, University of Cambridge , Cambridge CB2 3EQ, UK.
Biology letters
|September 17, 2024
概括
鱼和企拥有复杂的触觉鼻尖器官,与鱼不同. 这表明触觉食可能是这个海鸟类群,澳大利亚鸟类 (Austrodyptornithes.
科学领域:
- 鸟类的解剖学 鸟类的解剖学
- 感官生物学 感官生物学
- 进化形态学的进化形态学
背景情况:
- 鸟类使用嘴巴作为主要的触觉传感器.
- 在一些群体中已知专门的 bill-tip 器官,但在许多群体中还未得到充分研究.
- 海洋鸟类类 Austrodyptornithes (鱼,,企) 是理解比尔机械敏感性的关键焦点.
研究的目的:
- 为了研究机械受体的排列和神经血管解剖的澳大利亚海.
- 为了确定这个分类中 bill-tip 器官的进化历史.
- 为了在不同鸟类物种中比较 bill-tip 解剖学.
主要方法:
- 对前肌机械受体排列和神经血管解剖学的分析.
- 361个现存鸟类物种的家谱采样.
- 祖先状态的重建,以推断进化的历史.
主要成果:
- 鱼和企表现出复杂的触觉 Bill-tip 解剖学,类似于已知的触觉采集者.
- 鱼 (Procellariidae,Hydrobatidae,Oceanitidae) 缺乏这些专门的 bill-tip 形态.
- 祖先状态的重建支持了奥斯特罗迪普托尼特斯的共同祖先中 bill-tip 器官的存在.
结论:
- 在Procellariiformes.中发生了比特尖机械敏感性的显著进化过渡.
- 尖器官可能与夜间食,水下猎物检测或求爱有关.
- 触觉食可能是奥斯托迪普托尼斯的祖先特征,可能是从早期的鸟类进化中保留的.
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