在围系统和半自然环境中养的 rhesus macaques (Macaca mulatta) 的遗传结构的比较分析
1School of Mathematics and Natural Sciences, Arizona State University at the West Campus, Glendale, Arizona; and.
概括
囚禁的 rhesus macaque 殖民地由于受限的基因流动和近亲繁殖而面临遗传挑战,与半自然种群不同. 监测基因指标,如平均亲属关系,对于保持在养殖计划中的多样性至关重要.
科学领域:
- 灵长类动物遗传学
- 保护生物学 保护生物学
- 人口管理的人口管理.
背景情况:
- 囚禁育种计划对于灵长类动物的保护至关重要,但在保持遗传多样性方面面临着挑战.
- 囚禁 (加利福尼亚国家灵长类研究中心 - CNPRC) 和半自然 (Cayo Santiago - CS) 环境中的 rhesus 种群为殖民地管理影响提供了独特的比较.
- 遗传结构和多样性对于动物种群的长期生存能力至关重要.
研究的目的:
- 为了比较一个被囚禁的 rhesus macaque 种群 (CNPRC) 和一个半自然种群 (CS) 的遗传结构.
- 评估不同殖民地管理策略对遗传多样性,近亲繁殖和创始人代表性的影响.
- 识别关键指标,以保护被囚禁的灵长类群体的遗传完整性.
主要方法:
- 在CNPRC的3,679只动物和CS的2,147只动物的血统分析.
- 评估跨代基因组独特性 (GU),同胞繁殖系数,平均亲属关系 (MK),创始人等价值,以及创始人基因组等价值.
- 两种人群之间的生殖活动,寿命和家庭结构的比较.
主要成果:
- 与CS人群相比,CNPRC人群表现出更大的遗传细分和较低的GU.
- 与CS人口 (30%) 相比,在CNPRC人口中贡献的创始人较少 (<10%).
- 从2000年到2024年,这两个殖民地均显示出平均亲属关系 (MK) 的上升趋势,这表明亲属关系的增加.
结论:
- 像CNPRC这样的囚禁殖民地中受限的基因流动和内生繁殖导致遗传变异性显著下降.
- 标准的管理策略不足以对抗近亲繁殖和在囚禁种群中失去创始人代表性的损失.
- 持续监测近亲繁殖系数,GU和MK对于确保养殖殖民地的遗传完整性和长期生存能力至关重要,MK是关键的指标.
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