食器的鸟类特征反映了飞行的高要求
Jingmai K O'Connor1, Alexander D Clark1,2, Pei-Chen Kuo1
1Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL 60605, USA.
Innovation (Cambridge (Mass.))
|February 9, 2026
概括
最古老的鸟类恐龙Archaeopteryx拥有诸如敏感的鼻子和可移动的舌头等特征,提高了食效率. 这些适应可能是为了满足鸟类早期动力飞行的高能量需求而演变的.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 比较解剖学的比较.
背景情况:
- 脊椎动物,特别是鸟类的动力飞行带来了重大的能量挑战.
- 增加食和消化效率对于支持飞行的高代谢需求至关重要.
- 尼奥尼丁鸟类表现出专门的面部 (嘴巴) 和口腔结构,提高了养效率.
研究的目的:
- 为了调查在已知最早的鸟类恐龙 - - 考古普特里克斯 (Archaeopteryx) 中是否存在增强养效率的特征.
- 为了确定在航空飞行起源时是否存在增加热量摄入量的适应.
- 探索鸟类 bill-tip 器官和舌头移动性的进化起源.
主要方法:
- 对Archaeopteryx.化石下结构的分析.
- 显微镜检查下尖上的神经血管开口.
- 与现存的鸟类和其他类动物进行比较的解剖学研究.
主要成果:
- 在Archaeopteryx的尖处发现了大型神经血管开口的证据,这表明了机械感知软组织结构.
- 存在骨化基质,表明舌头的移动性增加.
- 这些特征与推断口腔乳头的同时出现,类似于现代鸟类.
结论:
- 考古巨拥有了提高养效率的关键适应,包括敏感的 bill-tip 和移动的舌头.
- 这些特征很可能是为了应对早期动力飞行的能量需求而演变的.
- 这些发现表明,有效养的适应存在于鸟类飞行的起源附近,早于一些后来的鸟类专业化.
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