在非人类人类类灵长类灵长类动物中神经狭窄性的全度测量和演变
Isabel J Mormile1, Christopher J Percival2, James B Rossie2
1Interdepartmental Doctoral Program in Anthropological Sciences, Stony Brook University, Stony Brook, New York, USA.
American journal of biological anthropology
|February 2, 2026
概括
灵长类动物的神经狭窄性不仅仅是通过体型测量来解释的. 克莱德特定的进化模式表明,较大的身体尺寸可能会减轻骨形状的约束,特别是在卡塔里尼.
科学领域:
- 灵长类古生物学
- 比较解剖学的比较解剖学
- 进化生物学 进化生物学
背景情况:
- 小体 (新世界子) 的神经头脑比大体的亲属更窄.
- 现有的假设表明,体型测量法解释了这种变化.
- 卡塔林 (旧世界子和猿类动物) 的跨种类变异似乎与类类度学不一致.
研究的目的:
- 为了研究人类类动物体型和神经狭窄度之间的关系.
- 为了确定神经头骨狭窄性是否已经演变为类特定的全度.
- 为了估计祖先的神经狭窄度及其进化极性.
主要方法:
- 通用最小方形分析 (GLS) 与共变的基因分析 (pANCOVA) 结合,以确定类间转移和全米缩放.
- 对祖先特征估计的节重建方法.
- 现存和化石人类类动物头骨的线性测量.
主要成果:
- 卡利特里希因和雌性塞比因的神经狭度大于身体大小预测的,具有明显的全度关系.
- 这种分歧与callitrichines的神经宽度的减少有关,但不是cebines.
- 大多数类人种类型并没有显示神经狭度与身体大小之间的相关性.
结论:
- 对于神经头骨狭窄的统一的全度图案并未在平动物或人类类动物中发现.
- 降低神经狭窄度与加大体积相关,在卡塔里纳,阿泰利德和皮特基类动物中.
- 较大的身体尺寸可能会放松神经形状的约束,解释小体形的狭窄性;食和大脑大小也可能影响变化.
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