探索鱼及其亲属 (Ophidiiformes:Ophidioidei) 的种系和深度演变
1Institute of Oceanography, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan.
Molecular phylogenetics and evolution
|July 31, 2024
概括
包括深海居民在内的Ophidiiform鱼类的进化历史已被揭示. 新的分类和家族重新定义澄清了它们的深海起源和多样化模式.
科学领域:
- 鱼类学和海洋生物学
- 进化生物学 进化生物学
- 深海生态 深海生态
背景情况:
- 形鱼,特别是形鱼和形鱼,在深海生态系统中占主导地位,但它们的进化关系尚不清楚.
- 之前的研究由于采样困难而面临挑战,阻碍了全面的遗传学和进化分析.
- 经过20多年的协作努力,从印度西太平洋地区获得了大量数据集,从而获得了新的见解.
研究的目的:
- 使用多基因数据集推断形鱼的遗传学关系和进化史.
- 调查Ophidioidei亚序的进化起源和浴度多样化模式.
- 根据强有力的遗传学证据提出分类学修订建议.
主要方法:
- 使用59个样本构建一个多基因数据集,这些样本代表36个眼类.
- 遗传学分析以解决Ophidioidei内部的关系.
- 时间校准的家族遗传重建和祖先深度估计.
主要成果:
- 发现Ophidiidae与卡拉皮类相比具有过敏性.
- 在Ophidioidei中解决了四个主要类,导致提出的分类学修订,包括将Brotulinae提升到家族地位和建立Acanthonidae.
- 类起源于浅水~96万年前; Ophidioidei的祖先侵入了深海~90万年前,可能起源于中层层区域并使其多样化.
结论:
- 这项研究为形鱼类提供了修订后的分类,澄清了家族和子家族关系.
- 进化历史表明,古代起源于浅水,随后发生了重大的深海入侵.
- 过去的气候变化可能影响了Ophidioidei内部的深度过渡和范围扩张.
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