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首页> 外文期刊>Zoological Science >Discordance Between Mitochondrial DNA Genealogy and Nuclear DNA Genetic Structure in the Two Morphotypes of Rana tagoi tagoi (Amphibia: Anura: Ranidae) in the Kinki Region, Japan
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Discordance Between Mitochondrial DNA Genealogy and Nuclear DNA Genetic Structure in the Two Morphotypes of Rana tagoi tagoi (Amphibia: Anura: Ranidae) in the Kinki Region, Japan

机译：日本近畿地区塔格蛙（Ramp tagoi tagoi）的两种形态的线粒体DNA谱系和核DNA遗传结构之间的不一致。

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摘要

Two morphotypes, with a large and small body size, of a brown frog Rana t. tagoi occur sympatrically in the Kinki region, central Honshu of Japan. Previous mitochondrial (mt) DNA genealogical study recognized two main lineages (A and B) and several sublineages in R. tagoi, where the small type was placed in the group A-1b, and the large type in groups A-1a and B-2a. Using haplotype network and structure analysis of three nuclear genes, we examined the discrepancy between morphology and mitochondrial genealogy. The results showed that the small type is reproductively isolated from its co-occurring large type (A-1a or B-2a), and that unlimited gene flow occurred between parapatrically occurring two mtDNA lineages of large types (A-1a and B-2a). Discordant genetic relationships between mtDNA and nuclear DNA results may be caused by the past mitochondrial introgression, and possibly, the incomplete lineage sorting. These results also suggest a heterospecific relationship between the large (A-1a and B-2a) and small types (A-1b). The large type is identified as Rana t. tagoi as it is genetically very close to the topotypes of the nominal subspecies, while the small type remains unnamed.
机译：棕色蛙Rana t的两种形态型，体型大小不一。塔哥族人同居于日本本州中部的近畿地区。先前的线粒体（mt）DNA族谱研究确认了R. tagoi中的两个主要谱系（A和B）和几个亚谱系，其中小类型位于A-1b组中，大类型位于A-1a和B-组中2a。使用单倍型网络和三个核基因的结构分析，我们检查了形态学与线粒体谱系之间的差异。结果表明，小型是从其同时出现的大型（A-1a或B-2a）中生殖分离出来的，并且在大家族（A-1a和B-2a）的两个家族中发生了无限的基因流动）。 mtDNA与核DNA结果之间不一致的遗传关系可能是由于过去的线粒体渗入，也可能是由于谱系排序不完整所致。这些结果还表明，大型（A-1a和B-2a）与小型（A-1b）之间存在异种关系。大类型被标识为Rana t。 tagoi，因为它在遗传上非常接近名义亚种的拓扑型，而小的类型仍未命名。

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