Distribution and genetic structure of the Japanese wood pigeon (Columba janthina) endemic to the islands of East Asia
Distribution and genetic structure of the Japanese wood pigeon (Columba janthina) endemic to the islands of East Asia
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DOI：
10.1007/s10592-006-9267-x
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发表时间：
2007-01-01
影响因子：
2.2
通讯作者：
Takehara, Kenji
中科院分区：
文献类型：
--
作者：
Seki, Shin-Ichi;Takano, Hajime;Takehara, Kenji
日本木鸽（Columba janthina）是东亚岛屿的特有物种，它被列入日本和亚洲红色名录，因为它的栖息地范围狭窄，仅限于小岛屿上的成熟森林，而且这些栖息地遭到破坏。本文通过对线粒体控制区序列的463个碱基对进行了遗传结构分析。我们分析了来自8个种群的154个样本，鉴定出27个单倍型。根据配对Phi（ST）值确定了三个人群组。大量的基因流动，反映在低和不显著的Phi（ST）值中，在北部群体中保持着，包括在冲绳，土喀罗，后藤，濑户内，Oki和伊豆岛发现的六个种群。相反，小笠原群岛东南种群与其他地区种群的Phi（ST）值较大（0.910 < Phi(ST) < 0.962）。在Sakishima群岛发现的西南种群的Phi（ST）值也显著但较小，与北部种群的每个种群相比（0.081 < Phi(ST) < 0.205）。Mantel检验表明，Phi（ST）值与生境网络的路径长度以及经生境间隙效应校正后的线性距离呈极显著相关，说明了生境紧密连接结构的重要性。上述3个类群可作为独立的管理单元，其中东南类群因其分布范围窄、种群规模小而具有最高的保护优先度。
The Japanese wood pigeon (Columba janthina) is endemic to the islands of East Asia and it is included in the Japanese and Asian Red Lists because of its narrow habitat range that is restricted to mature forests on small islands and because of the destruction of these habitats. We examined the genetic structure of Columba janthina by studying 463 base pairs of the mitochondrial control region sequences. We analyzed 154 samples from eight populations and identified 27 haplotypes. Three population groups were identified based on the pairwise Phi(ST) values. A substantial gene flow, as reflected by the low and non-significant Phi(ST) values, is maintained among the northern group that includes six populations found on the Okinawa, Tokara, Goto, Setouchi, Oki, and Izu islands. In contrast, the southeastern group found on the Ogasawara Islands had large Phi(ST) values with every population from other regions (0.910 < Phi(ST) < 0.962). The southwestern group found on the Sakishima Islands also had significant but small Phi(ST) values with every population from the northern group (0.081 < Phi(ST) < 0.205). The Mantel test showed a highly significant correlation between the Phi(ST) values and the route length of the habitat network, as well as the linear distance with correction of the habitat gap effect, indicating the importance of the closely connected structure of the habitats. The three groups mentioned above could be considered as independent management units, and the southeastern group has the highest conservation priority due to its narrow distribution range and small population size.