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通过dd-RAD测序对乳母的种群基因组分析:解开多样性,结构和选择性扫描
Zhaobi Ai1, Zhonglong Zhao1, Xiben Zhang2
1Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, College of Animal Science, Guizhou University, Guiyang, 550025 Guizhou Province, China.
Poultry science
|February 1, 2026
概括
贵州省的养显示出适度的遗传多样性,有一些近亲繁殖,但菌株之间的差异化很低. 确定了与免疫和代谢途径相关的关键基因,有助于保护工作.
科学领域:
- 动物遗传学动物遗传学
- 人口基因组学 人口基因组学
- 进化生物学 进化生物学
背景情况:
- ,来自中国贵州省的本地品种,需要遗传特征来了解其多样性和进化历史.
- 评估遗传多样性对于本土家禽种群的有效保护和繁殖策略至关重要.
研究的目的:
- 分析四种种的遗传多样性,种群结构和进化模式.
- 为了确定基因和途径在选择下在的.
主要方法:
- 通过dd-RAD测序生成全基因组单核酸多态 (SNP).
- 种群遗传学分析包括异卵性,近亲繁殖系数 (FIS),种群差异化 (FST),主要成分分析,混合物和亲属关系分析.
- 进行了选择特征扫描和基因丰富分析 (GO,KEGG).
主要成果:
- 断奶表现出适度的遗传多样性 (Ho=0.267,He=0.312) 与内生繁殖的证据 (FIS ≈ 0.14).
- 在四个菌株中观察到弱遗传差异化 (FST < 0.06) 和频繁的基因流动.
- 选择中的候选基因在免疫反应 (IL-17信号传递) 和代谢调节 (MAPK信号传递) 途径上得到了丰富.
结论:
- 哺乳具有适度的遗传多样性和较低的种群差异化,有亲生繁殖和基因流动的证据.
- 在免疫和代谢途径中识别的选择信号为未来的育种和保护计划提供了洞察力.
- 这项研究为管理和改善养种群提供了定量遗传基础.
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