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Phylogenomic resolution of lampreys reveals the recent evolution of an ancient vertebrate lineage 收藏

七鳃鳗的系统基因组解析揭示了古代脊椎动物谱系的最新进化
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作者
Lily C. Hughes; Devin D. Bloom; Kyle R. Piller; Nicholas Lang;Richard L. Mayden
关键词
Petromyzontiformes;biogeography;jawless fishes;divergence time estimation;diversification;fossilized birth–death model
关键词译文
岩形目；生物地理学；无颌鱼类；扩散时间估计；多样性；化石生灭模型
发布日期
2025-01-08
DOI
10.1098/rspb.2024.2101
来源信息
Proceedings of the Royal Society of London B: Biological Sciences ISSN：0962-8452, 2025年, 292卷, 2038期
摘要
Jawless vertebrates once dominated Palaeozoic waters, but just two lineages have persisted to the present day: lampreys and hagfishes. Living lampreys are a relatively small clade, with just over 50 species described, but knowledge of their evolutionary relationships has always been based on either a few mitochondrial genes or a small number of taxa. Biogeographers have noted the disjunct antitropical distribution of living lamprey families. Here, we present a comprehensive phylogenomic analysis of living and fossil lampreys, sampling 36 species with phylogenomic data and 46 in total with genetic data. We present new divergence time estimates based on comprehensive nuclear data and analysis of their diversification dynamics. Our analysis indicates a central role for extreme global warming during the Late Cretaceous Cenomanian–Turonian Boundary Event as a likely cause for the antitropical distribution of living lampreys, and a notable increase in lineage diversification in Northern Hemisphere lampreys during the Miocene corresponding with a period of global cooling.
摘要译文
无颚脊椎动物曾一度主宰古生代水域，但直到今天，只有两种血统仍然存在：七鳃鳗和鲶鱼。 活七鳃鳗是一个相对较小的进化枝，有50多个物种被描述，但它们进化关系的知识总是建立在少数线粒体基因或少量分类群的基础之上。 生物地理学家已经注意到现存七鳃鳗科的离散反热带分布。 在此，我们对活的七鳃鳗和化石进行了全面的系统发育分析，共采集了36个种的系统发育数据和46个种的遗传学数据。 我们提出了基于综合核数据及其多样化动力学分析的新分歧时间估计。 我们的分析表明，在晚白垩世Cenomanian-Turonian边界事件期间，极端全球变暖可能成为活七鳃鳗反热带分布的一个原因，中新世期间北半球七鳃鳗谱系多样性的显著增加与全球变冷时期相对应。
Lily C. Hughes; Devin D. Bloom; Kyle R. Piller; Nicholas Lang;Richard L. Mayden. Phylogenomic resolution of lampreys reveals the recent evolution of an ancient vertebrate lineage[J]. Proceedings of the Royal Society of London B: Biological Sciences, 2025,292(2038)