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Molecular Phylogenetics of the Neotropical Electric Knifefish Genus Gymnotus (Gymnotidae, Teleostei): Biogeography and Signal Evolution of the Trans-Andean Species.

机译：新热带电动刀鱼属Gymnotus（Gymnotidae，Teleostei）的分子系统发生学：跨安第斯物种的生物地理学和信号进化。

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Gymnotus, the banded electric knifefish, is a diverse genus with a range that extends from Argentina to southern Mexico and includes species distributed both east (cis-Andean) and west (trans-Andean) of the Andes. Each Gymnotus species exhibits a distinctive electric organ discharge (EOD), used for communication and navigation. Here, I present a new molecular phylogenetic hypothesis for 35 Gymnotus species based on two mitochondrial (cyt b and 16 S) and two nuclear genes (RAG2 and Zic1). I found that the trans-Andean species are distributed in four distinct lineages with varying amounts of divergence from their closest cis-Andean sister taxa. I suggest that not all trans-Andean species evolved as a result of the orogeny of the Andes. I evaluate EOD phase number evolution in Gymnotus and find a trend for reduced phase numbers in both cis- and trans-Andean regions. Finally, I suggest hypotheses to account for the patterns of EOD phase number diversification.

机译：Gymnotus（带状电动刀鱼）是一种多样的属，其范围从阿根廷延伸到墨西哥南部，包括安第斯山脉东部（顺安第斯山脉）和西部（跨安第斯山脉）分布的物种。每个Gymnotus物种都有独特的电子器官放电（EOD），用于通讯和导航。在这里，我提出了基于两个线粒体（cyt b和16 S）和两个核基因（RAG2和Zic1）的35个Gymnotus物种的新的分子系统发育假说。我发现，跨安第斯山脉的物种分布在四个不同的谱系中，与其最接近的顺式安第斯姐妹姊妹分类单元有不同程度的差异。我建议并非所有的安第斯山脉物种都是安第斯山脉造山运动的结果。我评估了Gymnotus中EOD相数的演变，并发现了顺-和反-安第斯地区的相数减少的趋势。最后，我提出了假设，以解释EOD相数多样化的模式。

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作者
Brochu, Kristen.;
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作者单位

University of Toronto (Canada).;

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授予单位 University of Toronto (Canada).;
学科 Biology Molecular.;Biology Evolution and Development.
学位 M.Sc.
年度 2011
页码 108 p.
总页数 108
原文格式 PDF
正文语种 eng
中图分类
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机译：带状刀鱼裸not（Teleostei，Ostariophysi，Gymnotiformes）的系统发育和修订分类学研究，描述了十四个新物种。
5. Multiple rearrangements in cryptic species of electric knifefish Gymnotus carapo (Gymnotidae Gymnotiformes) revealed by chromosome painting [O] . Cleusa Y Nagamachi, Julio C Pieczarka, Susana SR Milhomem, 2010

机译：染色体绘画揭示了电刀鱼隐身物种金龟科（GymnotidaeGymnotiformes）的多重重排
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Molecular Phylogenetics of the Neotropical Electric Knifefish Genus Gymnotus (Gymnotidae, Teleostei): Biogeography and Signal Evolution of the Trans-Andean Species.

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