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在灵长类动物中对悬浮性适应的植物遗传学比较分析

Jeffrey K Spear¹

¹Department of Organismal Biology and Anatomy, University of Chicago, 1027 E 57th Street, Chicago, 60637, USA; Center for the Study of Human Origins and Department of Anthropology, New York University, 25 Waverly Place, New York, 10003, USA; New York Consortium in Evolutionary Primatology, New York, USA.

Journal of human evolution

|November 26, 2024

概括

确定了与灵长类悬浮运动相关的形态特征. 关节骨长度,骨头长度和肩膀形状是关键指标,但根据悬浮程度和进化史,适应性会有所不同.

科学领域:

灵长类动物进化生物学
古人类学古人类学.
比较解剖学的比较解剖学.

背景情况:

人类类的悬浮运动假设作为双脚的预适应已被争论.
解读悬浮的化石特征是具有挑战性的,因为马赛克图案和替代解释,如度或登适应.

研究的目的:

调查27个形态特征与现存灵长类动物前肢悬浮之间的关联.
澄清哪些骨特征是灵长类进化中悬浮行为的可靠指标.

主要方法:

使用了基于遗传学知识的比较分析.
研究了74个灵长类属中近1500个个体的大样本.
行为学文献被系统地审查,以分类悬浮运动.

主要成果:

关节骨的长度,骨头的长度,中侧肩的宽度和肩角 (角膜和脊柱) 显示出与悬浮的强烈关联.
骨头高度与一般的非四足运动有关,而不是具体的悬挂.
肌肉插入部位 (双腿,骨) 显示了与悬浮体的大小相关的关联.

结论:

许多假设的特征在遗传学上与悬浮没有可靠的联系.
悬浮的形态适应是马赛克,受悬浮程度,其他行为和进化史的影响.
识别的特征可能与肩关节运动的增强有关.

关键词:

前肢的前肢是什么意思前肢的前肢是什么意思人类类类型的进化.肩膀肩膀在肩膀上

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