重建蛇大脑的起源和早期演变
Simone Macrì1, Ida-Maria Aalto1, Rémi Allemand2
1Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland.
Science advances
|September 27, 2023
概括
蛇的起源涉及挖掘生活方式和机会主义行为,由大脑重建揭示出来. 这说明了早期蛇的进化和脊椎动物古生物学.
科学领域:
- 古生物学的古生物学.
- 进化生物学 进化生物学
- 类学 类学 类学
背景情况:
- 蛇是多样化的脊椎动物,但它们的生态起源和早期进化仍有争议.
- 有限的化石证据和骨质学特征的局限性阻碍了进化重建.
研究的目的:
- 研究蛇的生态起源和早期进化.
- 用生态形态学假设重建祖先蛇的生活方式.
主要方法:
- 现存的Squamata (和蛇) 的高清大脑重建.
- 使用预测模型进行生态形态学假设测试.
- 在软组织中表型多样化的定量追踪,包括大脑形态学.
主要成果:
- 预测模型表明,在皇冠蛇的起源时,挖掘生活方式具有机会主义的行为.
- 推断出一个复杂的祖先马赛克大脑模式.
- 软组织的表型多样化,特别是小脑,对于理解进化至关重要.
结论:
- 这项研究为蛇的进化起源提供了新的见解,强调了挖掘祖先.
- 重建软组织形态,如大脑,对于古生物学来说至关重要,特别是当化石稀缺时.
- 将现存和已灭绝的数据与软组织和骨质特征相结合,为追踪深层进化历史提供了一种强大的方法.
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