Population Structure of the Salamander Hynobius retardatus Inferred from a Partial Sequence of the Mitochondrial DNA Control Region
Population Structure of the Salamander Hynobius retardatus Inferred from a Partial Sequence of the Mitochondrial DNA Control Region
复制标题
DOI：
10.2108/zsj.30.7
复制
发表时间：
2013-01-01
影响因子：
0.9
通讯作者：
Michimae, Hirofumi
中科院分区：
文献类型：
--
作者：
Azuma, Noriko;Hangui, Jun-ichi;Michimae, Hirofumi
利用105只日本北海道的小鲵（Hynobius retardatus）的线粒体DNA控制区（490 bp）的部分序列，研究了小鲵的种群结构。这些蝾螈是从代表该物种整个区域分布的28个地点收集的。20个不同的单倍型分布在三个单倍型组进行了鉴定。第1组广泛分布于中部、北方和北海道东部，但不包括Erimo;第2组和第3组分别仅出现在Erimo和北海道南部。3个群体间的遗传距离不是很大，但各群体的分布在空间上不重叠，表现出由3个区域群体组成的等级群体结构，分子方差分析也支持这一点。结果表明，目前的人口结构的影响，目前的遗传障碍，以及气候和景观的历史转变。
We investigated population structure of the salamander Hynobius retardatus in Hokkaido, Japan using partial sequences of the mitochondrial DNA control region (490 bp) from 105 individuals. The salamanders were collected from 28 localities representing the entire regional distribution of this species. Twenty different haplotypes distributed across three haplotype groups were identified. Group 1 was widely distributed in central, northern, and eastern Hokkaido, except Erimo; Groups 2 and 3 appeared exclusively in Erimo and southern Hokkaido, respectively. The genetic distance between the three groups was not very large, but the distributions of the groups never overlapped spatially, indicating a hierarchical population structure comprising three regional groups, which was also supported by analysis of molecular variance. The results suggest that the present population structure is affected by current genetic barriers, as well as by historical transitions of climate and landscape.