Molecular Phylogenetics and Evolution
Molecular Phylogenetics and Evolution
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DOI：
10.1016/j.ympev.2018.02.012
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发表时间：
2018-06
影响因子：
4.1
通讯作者：
Marina Walker;Mariana L. Lyra;C. Haddad
中科院分区：
文献类型：
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作者：
Marina Walker;Mariana L. Lyra;C. Haddad
Fritziana 属（Anura：Hemiphractidae）包括巴西大西洋森林特有的六个物种（F. goeldii、F. ohausi、F. fissilis、F. ulei、F. tonimi 和 F. izecksohni）。尽管该属一直是分类学、系统发育和系统学研究的主题，但有大量证据表明该属隐藏着神秘的多样性。本研究旨在了解 Fritziana 物种之间的遗传多样性和系统发育关系，以及物种内种群之间的关系。我们使用三个线粒体基因片段（12S、16S 和 COI）和两个核基因（RAG1 和 SLC8A3）分析了该属分布范围内的 107 个个体。我们的数据表明，Fritzianais 属的物种多样性被低估，因为在背袋封闭的物种组中隐藏着至少三个候选物种（即 F. fissilisandF.ulei）。我们还发现了四种具有地理种群结构和高度遗传多样性的物种，因此需要进一步研究。此外，我们发现两个候选物种显示出 tRNA-Phegene 的新排列，这在无尾鸟中是独一无二的。根据我们的结果，我们建议需要对该物种的保护状况以及弗里茨亚纳属的物种多样性进行审查。
The genusFritziana(Anura: Hemiphractidae) comprises six described species (F. goeldii,F. ohausi,F. fissilis,F. ulei,F. tonimi,andF. izecksohni) that are endemic to the Brazilian Atlantic Forest. Although the genus has been the subject of studies dealing with its taxonomy, phylogeny, and systematics, there is considerable evidence for cryptic diversity hidden among the species. The present study aims to understand the genetic diversity and phylogenetic relationships among the species ofFritziana, as well as the relationships among populations within species. We analyzed 107 individuals throughout the distribution of the genus using three mitochondrial gene fragments (12S,16S, andCOI) and two nuclear genes (RAG1andSLC8A3). Our data indicated that the species diversity in the genusFritzianais underestimated by the existence of at least three candidate species hidden amongst the group of species with a closed dorsal pouch (i.e.F. fissilisandF.ulei). We also found four species presenting geographical population structures and high genetic diversity, and thus require further investigations. In addition, we found that two candidate species show a new arrangement for thetRNA-Phegene, unique in Anura so far. Based on our results, we suggest that the conservation status of the species, as well as the species diversity in the genusFritziana,needs to be reviewed.