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Cryptic lineage diversity within Forest Dormice (Mammalia: Dryomys nitedula) revealed by deep genetic divergence among different subspecies on the Iranian Plateau and in adjacent areas
Mammalian Biology ( IF 1.6 ) Pub Date : 2020-07-29 , DOI: 10.1007/s42991-020-00055-5
Zeinolabedin Mohammadi , Haji Gholi Kami , Fatemeh Ghorbani , Asghar Khajeh , Urban Olsson

Dryomys nitedula has been considered a polytypic species which is distributed in the Palearctic region. Previous studies have shown the taxonomic status and phylogenetic relationships between different subspecies of D. nitedula needs to be further investigated. Here, we applied mitochondrial and nuclear DNA markers to evaluate phylogenetic relationship among geographical subspecies of D. nitedula in Iranian Plateau and adjacent areas and tried to resolve taxonomic issues. Molecular analyses revealed four major clades and several subclades: Kopet Dagh–Zagros clade (A) comprising Kopet Dagh subclade (A1); Zagros subclade (A2); Caucasian clade (B) including Lesser Caucasus and Alborz subclade (B1); central and eastern Great Caucasus subclade (B2); western Great Caucasus and Russian subclade (B3); European–Apennine clade (C) including E Europe subclade (C1); Calabrian subclade (C2), and Eastern Alps subclade (C3), respectively. Finally, occurrence of a lineage with distinct evolutionary history was confirmed in the central Iranian Plateau, clade (D). Our results based on mitochondrial and nuclear DNA obviously support that D. n. pictus (clade D) is a deeply divergent lineage and should be treated as a separate species. Phylogenetic relationships and genetic distances within D. nitedula indicate a complex evolutionary history within the Western Palearctic region, with many local populations indicated having been isolated since at least Pleistocene, and suggest that treating D. nitedula complex as several species is warranted.

中文翻译:

伊朗高原和邻近地区不同亚种之间的深层遗传差异揭示了森林睡鼠(哺乳动物:Dryomys nitedula)内的隐秘谱系多样性

Dryomys nitedula 被认为是分布在古北地区的多型物种。以前的研究表明,D. nitedula 不同亚种之间的分类地位和系统发育关系需要进一步研究。在这里,我们应用线粒体和核 DNA 标记来评估伊朗高原及邻近地区 D. nitedula 地理亚种之间的系统发育关系,并试图解决分类学问题。分子分析揭示了四个主要进化枝和几个子进化枝:Kopet Dagh-Zagros 进化枝(A)包括 Kopet Dagh 子进化枝(A1);扎格罗斯分支(A2);白种人进化枝 (B) 包括小高加索和 Alborz 子进化枝 (B1);大高加索中部和东部分支(B2);大高加索西部和俄罗斯分支(B3);欧洲-亚平宁进化枝 (C),包括 E 欧洲子进化枝 (C1);分别是卡拉布里亚分支 (C2) 和东阿尔卑斯山分支 (C3)。最后,在伊朗高原中部,进化枝 (D) 证实了具有独特进化历史的谱系的发生。我们基于线粒体和核 DNA 的结果显然支持 D. n. pictus(进化枝 D)是一个非常不同的谱系,应该被视为一个单独的物种。D. nitedula 内的系统发育关系和遗传距离表明西古北地区有一个复杂的进化历史,许多当地种群表明至少自更新世以来就已被隔离,并表明将 D. nitedula 复合体视为几个物种是必要的。在伊朗中部高原,进化枝(D)中证实了具有独特进化历史的谱系的发生。我们基于线粒体和核 DNA 的结果显然支持 D. n. pictus(进化枝 D)是一个非常不同的谱系,应该被视为一个单独的物种。D. nitedula 内的系统发育关系和遗传距离表明西古北地区有一个复杂的进化历史,许多当地种群表明至少自更新世以来就已被隔离,并表明将 D. nitedula 复合体视为几个物种是必要的。在伊朗中部高原,进化枝(D)中证实了具有独特进化历史的谱系的发生。我们基于线粒体和核 DNA 的结果显然支持 D. n. pictus(进化枝 D)是一个非常不同的谱系,应该被视为一个单独的物种。D. nitedula 内的系统发育关系和遗传距离表明西古北地区有一个复杂的进化历史,许多当地种群表明至少自更新世以来就已被隔离,并表明将 D. nitedula 复合体视为几个物种是必要的。
更新日期:2020-07-29
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