Population structure of the golden snub-nosed monkey Rhinopithecus roxellana in the Qinling Mountains, central China
Population structure of the golden snub-nosed monkey Rhinopithecus roxellana in the Qinling Mountains, central China
复制标题
秦岭金丝猴种群结构
DOI：
10.1111/1749-4877.12202
复制
发表时间：
2016-09-01
影响因子：
3.3
通讯作者：
Li, Baoguo
中科院分区：
文献类型：
--
作者：
Huang, Kang;Guo, Songtao;Li, Baoguo
环境障碍和栖息地破碎化会限制基因流动，导致动物种群之间的遗传分化。金丝猴（Rhinopithecus roxellana）是中国特有的物种，分布在 4 个省份。然而，在过去 40 年里，其人口已经变得支离破碎。我们在其大本营之一陕西秦岭森林的 5 个保护区调查了其遗传多样性、种群历史和种群结构。我们从 11 个猴群（一组包含多个 1-雄性单位的个体）中收集了遗传物质，总共 428 个样本在 20 个微卫星位点进行了基因分型。等位基因丰富度和杂合性表明带内遗传多样性水平相对较高。我们没有发现这些 R. roxellana 种群存在任何遗传瓶颈的证据。 AMOVA 和贝叶斯聚类分析显示，5 个保护区中的 R. roxellana 具有高度结构化，并形成至少 3 个不同的亚群。这些亚群与研究区域的主要地形特征一致，例如山脊，表明 R. roxellana 的传播可能受到地理障碍的限制。
Environmental barriers and habitat fragmentation can restrict gene flow, leading to genetic divergence among animal populations. The golden snub-nosed monkey, Rhinopithecus roxellana, is endemic to China, and ranges across 4 provinces. However, over the past 40 years its populations have become fragmented. We investigated the genetic diversity, demographic history and population structure of R. roxellana in 5 reserves in one of its strongholds, the Qinling Mountain forests of Shaanxi. We collected genetic material from 11 monkey bands (a group of individuals containing multiple 1-male units) with a total of 428 samples genotyped at 20 microsatellite loci. Allelic richness and heterozygosity suggested a relatively high level of intra-band genetic diversity. We found no evidence of any genetic bottleneck in these R. roxellana populations. AMOVA and Bayesian cluster analysis revealed that R. roxellana in the 5 reserves are highly structured and form at least 3 distinct subpopulations. These subpopulations concur with major topographical features in the study area, such as mountain ridges, suggesting that dispersal of R. roxellana may be restricted by geographical barriers.