估计欧洲狼群的实际规模
Joachim Mergeay1,2, Sander Smet2, Sebastian Collet3
1Research Institute for Nature and Forest Geraardsbergen Belgium.
Evolutionary applications
|October 23, 2024
概括
用经验数据校准分子方法改善了灰狼的有效种群大小 (Ne) 估计. 狼群的数量是一个可靠的代表Ne,欧洲一半的人口不符合Ne500标准.
科学领域:
- 保护遗传学 保护遗传学
- 人口生态学 人口生态学
- 野生动物管理 野生动物管理
背景情况:
- 分子方法是估计有效种群大小 (Ne) 的标准,但通常违反模型假设.
- 模拟和经验数据对于校准和改进分子Ne估计方法至关重要.
- 由于可获得的长期遗传和生态数据,欧洲的灰狼 (Canis lupus) 是一个有价值的案例研究.
研究的目的:
- 为了增强分子Ne估计策略,使用灰狼种群的经验数据.
- 为了比较不同的分子Ne估计方法 (链接不平衡,兄弟关系频率) 和它们对空间遗传结构的敏感性.
- 对欧洲狼种群的Ne 500指标的有效性进行评估.
主要方法:
- 从终身生殖成功和德国人口普查数据计算的基线Ne.
- 校准的分子Ne估计 (链接不平衡,兄弟关系频率) 使用基线.
- 评估了当地社区和超级人口中的Ne,并将Ne与狼群数量相关联.
主要成果:
- 群体的数量成为有效人口规模 (Ne) 的强有力的代表.
- 连接不平衡方法对空间遗传结构的敏感性比兄弟关系频率方法更强.
- 估计的元人口Ne与当地社区Ne估计的总和保持一致.
- 欧洲一半的狼种群没有达到Ne 500保护基准.
结论:
- 经验校准显著提高了灰狼分子Ne估计的准确性.
- 群体数量是有效种群规模的可靠指标,有助于保护工作.
- 迫切需要采取保护行动,以使欧洲狼种群达到可持续的有效种群规模.
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