在沙底之外:对鱼 (Teleostei:Aulopiformes) 的进化和分类学的见解
Shih-Yu Wang1, Hsin Lee2, Barry C Russell3
1Institute of Oceanography, National Taiwan University, Taipei, Taiwan.
PeerJ
|March 11, 2026
概括
鱼家族 (Synodontidae) 根据遗传学分析被重新分类为两个不同的家族,Synodontidae和Harpadontidae. 这项研究还揭示了这些海洋鱼群内的大量神秘物种多样性.
科学领域:
- 鱼类学 鱼类学 鱼类学
- 分子遗传学分子遗传学
- 系统生物学 系统生物学
背景情况:
- 鱼 (Synodontidae) 是底层食肉动物,对海洋生态系统至关重要.
- 该家族的分类一直是有争议的,需要一个强大的遗传学框架.
- 目前的分类学包括四个属的84个物种:Synodus,Harpadon,Saurida和Trachinocephalus.
研究的目的:
- 重建 Synodontidae 和相关的 Aulopiformes 的分类.
- 测试家族及其属的单属.
- 使用综合方法评估物种多样性和有效性.
主要方法:
- 分析了多核基因数据集 (RH,RAG1,ZIC1,ENC1) 和完整的线粒体基因组.
- 在Aulopiformes中研究了更高层次的关系和分歧时间.
- 使用1688个COI序列和物种划分方法 (ASAP,bPTP) 评估了物种级分类.
主要成果:
- Synodontidae不是单体的;它的子家族 (Synodontinae和Harpadontinae) 是不同的单体群,证明将其重新归类为单独的家族是合理的.
- 只有哈尔帕登和特拉基诺塞法卢斯属被发现是单系的.
- 确定了108种假定物种,表明了大量的隐秘多样性,其中Synodontinae起源于白纪晚期,Harpadontinae起源于伊纪.
结论:
- 将Synodontidae亚家族重新分类为不同的家族 (Synodontidae stat. nov. 和 Harpadontidae 的统计数据. 这是一个新的世界.
- 揭示了鱼内部广泛的隐藏物种多样性.
- 为未来对Synodontidae和Aulopiformes系统性的研究提供了一个强大的遗传学框架.
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