在Euarchontoglires中大脑大小的全度学:分类特定的模式及其对脑分化系数的影响
Sergi López-Torres1,2, Ornella C Bertrand3,4, Łucja Fostowicz-Frelik5,6,7
1University of Warsaw, Faculty of Biology, Biological and Chemical Research Centre, Institute of Evolutionary Biology, Żwirki i Wigury 101, 02-089 Warsaw, Poland.
Journal of mammalogy
|November 26, 2024
概括
在Euarchontoglires中,大脑尺寸的演变表明形动物的尺寸像动物,而不是灵长类动物. 这凸显了对于精确的进化研究需要分类特定的脑分量 (EQ) 度量.
科学领域:
- 进行比较的神经解剖学.
- 进化生物学是进化的生物学.
- 古生物学的古生物学
背景情况:
- 灵长类动物的相对大脑大小演变得到了很好的研究.
- 在其他Euarchontoglires中,大脑与身体的缩放仍然不太了解.
- 欧阿孔托格里斯包括灵长类动物,皮质类动物,斯堪丹提亚类动物,形动物和动物.
研究的目的:
- 为了研究大脑对身体的质量扩展在Euarchontoglires.
- 为了比较大脑缩放模式在 Euarchontoglires 内的主要分类.
- 开发特定于分类的脑分化率 (EQ) 度量.
主要方法:
- 拟合普通最小平方 (OLS),缩小主要轴 (RMA) 和家族遗传概括最小平方 (PGLS) 的回归.
- 利用了最大的可用数据集,对欧阿孔托格拉人大脑和体质 (715个物种) 进行了分析.
- 在超序,序,和次序级别创建了特定类别的EQ方程.
主要成果:
- 形动物和动物表现出类似的大脑和身体的缩放,与灵长类不同.
- 灵长类动物的大脑缩放显示了一个独特的模式,与Strepsirrhini和Haplorhini不同于其他群体.
- 克莱德特定的EQ方程为化石种类提供了更准确的脑化估计.
结论:
- 灵长类动物独特的脑体缩放需要特定类的情商指标.
- 一般化的哺乳动物EQ方程对于特定的类和化石物种可能不准确.
- 这项研究为了解Euarchontoglires中的大脑进化提供了一个精细的框架.
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