重建自早期欧世以来在整个欧亚大陆的淡水鱼类 (Nemacheilidae) 的分类和进化历史
Vendula Bohlen Šlechtová1, Tomáš Dvořák1,2, Jörg Freyhof3
1Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Libechov, Czech Republic.
eLife
|April 4, 2025
概括
淡水鱼家族Nemacheilidae起源于4800万年前的印度支那. 这项研究重建了它们的欧亚进化历史,揭示了由地质和气候变化驱动的扩张和灭绝.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 鱼类学 鱼类学 鱼类学
背景情况:
- 欧亚大陆的中生代 (Cenozoic) 时代出现了巨大的构造,地质和气候变化.
- 生物多样性的进化受到动态环境中复杂的非生物相互作用的影响.
- 对这些对生物多样性的影响的大规模重建是有限的.
研究的目的:
- 在整个欧亚大陆重建淡水鱼家族Nemacheilidae的进化历史.
- 为了研究中生代环境变化对Nemacheilidae进化的影响.
- 为淡水生物多样性演变提供大陆范围的深度时间视角.
主要方法:
- 用6个基因对471个代表279个Nemacheilidae物种的标本进行了家族遗传学分析.
- 克拉多基因事件的分子约会.
- 祖先范围估计.祖先范围估计.
主要成果:
- 在Nemacheilidae中确定了六个主要分类,有几个分类学不确定性.
- 这一家族起源于大约4800万年前的印度支那.
- 尼马切利科殖民亚洲和欧洲的不同地区,干旱导致灭绝.
结论:
- 这项研究首次对欧亚淡水生物多样性在深层地质时间的演变进行了全面的重建.
- 构造的连接,气候,和orogeny促进了Nemacheilidae的分散.
- 干旱是这个家族灭绝事件的关键因素.
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