Genetic differentiation among local populations of the European hedgehog (Erinaceus europaeus) in mosaic habitats
Genetic differentiation among local populations of the European hedgehog (Erinaceus europaeus) in mosaic habitats
复制标题
DOI：
10.1046/j.1365-294x.1998.00457.x
复制
发表时间：
1998-11-01
影响因子：
4.9
通讯作者：
Griffiths, R
中科院分区：
文献类型：
--
作者：
Becher, SA;Griffiths, R
对来自英国牛津郡8个小种群的160只欧洲刺猬的组织样本进行了6个微卫星位点的多态性筛选。等位基因排列分析未发现位点间连锁不平衡的证据。种群内和5个位点的基因型比例与Hardy-Weinberg平衡的预期值没有差异。然而，由于几个样本存在明显的杂合子缺陷和扩增失败，需要从分析中删除一个位点。观察到的平均杂合度为0.70。平均Rho（ST）为0.079，与0有显著差异，表明本地群体间基因流动受限。两两比较，Nm值与地理距离不相关，表明距离以外的因素影响了种群的扩散。
Tissue samples from 160 European hedgehogs, Erinaceus europaeus, representing eight small populations from a highly fragmented landscape in Oxfordshire, UK, were screened for polymorphism at six microsatellite loci. Permutation analysis of allelic compositions revealed no evidence for linkage disequilibrium among loci. Genotype proportions within populations and at five loci did not differ from those expected at Hardy-Weinberg equilibrium. However, significant heterozygote deficit and amplification failure of several samples necessitated removal of one locus from the analysis. Mean observed heterozygosity was 0.70. Average Rho(ST) was 0.079 and differed significantly from zero, suggesting restricted gene flow among local populations. Pairwise Nm values and geographical distance were not correlated, indicating that factors other than distance affected dispersal.