兽类学报 ›› 2025, Vol. 45 ›› Issue (4): 438-445.DOI: 10.16829/j.slxb.150996

• 研究论文 • 上一篇    下一篇

非人灵长类和鹦鹉脑大小与多样化速率间的全球趋同关系

张一舟1, 姚永芳1, 肖洪涛1, 解萌1, 武佳韵1, 倪庆永2, 杨盛智1, 徐怀亮1, 熊鹰1   

  1. 1 四川农业大学生命科学学院, 雅安 625000;
    2 四川农业大学动物科技学院, 成都 611100
  • 收稿日期:2024-08-12 修回日期:2024-08-30 发布日期:2025-08-01
  • 通讯作者: 徐怀亮,E-mail:xiongying_bio@163.com;熊鹰,E-mail:xuhuail@126.com
  • 作者简介:张一舟(2002-),男,硕士研究生,主要从事进化生物学研究;姚永芳(2002-),女,副教授,主要从事野生动物遗传资源保护与利用研究.
  • 基金资助:
    国家自然科学基金青年项目(32300352)

Globally convergent relationships between relative brain mass and diversification rate in non-human primates and parrots

ZHANG Yizhou1, YAO Yongfang1, XIAO Hongtao1, XIE Meng1, WU Jiayun1, NI Qingyong2, YANG Shengzhi1, XU Huailiang1, XIONG Ying1   

  1. 1 College of Life Science, Sichuan Agricultural University, Ya'an 625000, China;
    2 College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611100, China
  • Received:2024-08-12 Revised:2024-08-30 Published:2025-08-01

摘要: 非人灵长类动物和鹦鹉演化出了相较于其近亲更为卓越的认知能力。这种认知优势能够提高它们对新环境的适应能力,并促进其生态位的扩张,从而推动物种的多样化。然而,在全球范围内,这两个类群中脑大小与多样化之间的关系仍然未知。本研究基于全球283种非人灵长类动物和201种鹦鹉的大脑数据集,通过系统发育和空间分析方法发现,虽然这两个类群的脑大小与多样化速率的全球分布模式完全相反,但在空间分布上却存在趋同的相关性。与以往在物种水平上的研究结果不同,本研究发现气候特征对相对脑大小的影响非常微弱。此外,鹦鹉的相对脑大小与其受威胁风险的空间分布之间也存在着显著的正相关关系。本研究揭示了脊椎动物不同谱系中,脑大小演化的相似性对物种多样化速率的空间分布起着相似的作用,并提示了分布有较大脑的鹦鹉的区域应给予更多的关注与保护。

关键词: 脑容量, 趋同演化, 多样化速率, 非人灵长类, 鹦鹉

Abstract: Non-human primates and parrots have convergently evolved remarkable cognitive abilities compared to their close relatives. This advantage can facilitate ecological niche expansion and adaptation to new environments, thereby spurring species diversification. However, the connection between brain size and diversification rate on a global scale remains unknown in these two clades. Here, based on a brain dataset comprising 283 primate and 201 parrot species, we used phylogenetic and spatial analysis methods to uncover a convergently coupled relationship between relative brain mass and diversification rate, despite the opposing global patterns observed in primates and parrots. Climate factors exhibit a statistically significant but weak effect on relative brain size, which contrasts with previous findings at the species level. Furthermore, there is a significant positive association between the relative brain size and threat risk in the spatial distribution of parrots. Our results demonstrate that the evolutionary similarity in brain size plays a crucial role in shaping the spatial patterns of diversification rate across species, highlighting the need for increased concern and protection of regions with larger brain sizes.

Key words: Brain size, Convergent evolution, Diversification, Non-human primate, Parrot

中图分类号: