揭开非洲 (Panthera pardus pardus) 的母性进化历史
Declan R Morris1, Todd J McWhorter1, Wayne S J Boardman1
1School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, South Australia, Australia.
PeerJ
|April 15, 2024
概括
非洲 (Panthera pardus pardus) 显示了两个不同的母系 (PAR-I和PAR-II),大约在070万年前分离. 在南非发现的PAR-II,可能因气候变化而被隔离,这可能解释了较小的大小.
科学领域:
- 遗传学 遗传学 是一个
- 进化生物学 进化生物学
- 动物学 动物学
背景情况:
- 非洲 (Panthera pardus pardus) 经历了显著的范围减少.
- 之前的研究在非洲身上发现了两种不同的线粒体DNA系 (PAR-I和PAR-II).
- 这些血统的进化历史和分歧时间以前没有被研究过.
研究的目的:
- 到目前为止,非洲的PAR-I和PAR-II线粒体系的分歧.
- 分析这些血统的地理分布和人口历史.
- 调查非洲子观察到的遗传结构的潜在驱动因素.
主要方法:
- 编制了非洲类线粒体NADH-5基因最大的地理代表性数据集 (n=244).
- 结合了来自南非的新样本,并公布了序列.
- 采用空间和人口统计分析来推断血统历史.
主要成果:
- 估计PAR-I和PAR-II血统的分歧大约在0.7051万年前.
- PAR-I显示了普莱斯托时代中期的扩张,具有广泛的,非结构化的单元类型.
- PAR-II表现出稳定或下降的种群规模,更大的遗传漂移和独特的地理结构,特别是在南非.
结论:
- 非洲的mtDNA显著地分为PAR-I和PAR-II类.
- PAR-II的植物地理结构表明,南非在普莱斯托时代中期可能因古气候变化而被孤立.
- 这种遗传细分可能是南非子体型较小的第一个解释.
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