过去的基因组指导未来的保护:从临灭绝的太平洋口袋老鼠的灭绝种群的见解
Erik R Funk1, Caitlin J Curry1, Scott Tremor2
1San Diego Zoo Wildlife Alliance, Beckman Center for Conservation Research, 15600 San Pasqual Valley Rd., Escondido, CA 92027, USA.
The Journal of heredity
|November 3, 2025
概括
对临灭绝的太平洋口袋老鼠的基因组分析揭示了不同的遗传血统,使历史范围的定义变得复杂. 保护仍然可以使用这些见解来指导物种恢复的重新引入策略.
科学领域:
- 保护基因组学 保护基因组学
- 人口遗传学 人口遗传学
- 进化生物学 进化生物学
背景情况:
- 危物种的恢复通常涉及将它们重新引入历史范围.
- 在不了解祖先遗传景观的情况下,恢复丢失的遗传变异是很困难的.
- 太平洋口袋老鼠 (Perognathus longimembris pacificus) 是一个联邦临灭绝的物种,并从其大部分范围被消灭.
研究的目的:
- 通过对历史样本的整个基因组进行测序,为太平洋口袋鼠的保护计划提供信息.
- 评估通过转移和再引入重新总结历史遗传变异的可行性.
- 调查分类学不确定性及其对定义历史保护范围的影响.
主要方法:
- 历史太平洋口袋老鼠样本的全基因组测序,包括已灭绝的种群.
- 遗传学分析以确定种群之间的进化关系.
- D-统计和人口建模以推断历史基因流动和连接.
主要成果:
- 遗传学分析确定了不同的分类,其中最南端的灭绝人口聚集在不同的亚种中.
- 形态和遗传发现支持分类学修订,改变历史范围的定义.
- 沿海人群中历史基因流动的证据表明,有可能重新引入祖先的等位基因.
结论:
- 来自历史样本的基因组见解对于在分类学不确定性和除中指导保护决策至关重要.
- 尽管存在挑战,但保护战略可以利用基因组数据来增强危物种的适应潜力和弹性.
- 在修订后的历史范围内具有适合息地的接收站点应被认为是适合人口建立的可行性.
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