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Description of Scottnema lindsayae Timm, 1971 (Rhabditida: Cephalobidae) from Taylor Valley, Antarctica and its phylogenetic relationship

机译:1971年南极泰勒山谷的斯科特内玛林达萨姆·蒂姆(Rhabditida:Cephalobidae)的描述及其系统发育关系

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The endemic Antarctic nematode Scottnema lindsayae is described from specimens collected in Taylor Valley, McMurdo Dry Valleys, Victoria Land. The recently collected material is compared with the original description and other subsequent descriptions of the species. A more complete scanning electron microscopy (SEM) study of the species is presented. The phylogenetic position of S. lindsayae is inferred using a secondary structure-based alignment of a partial sequence of nuclear Large Subunit (LSU) ribosomal DNA. Phylogenetic trees were inferred using base-paired substitution models implemented in PHASE 2 software and Bayesian inference, and show S. lindsayae as the sister group to Stegelletina taxa.
机译:从维多利亚州麦克默多干旱谷的泰勒谷采集的标本中描述了地方性南极线虫Scottnema lindsayae。将最近收集的材料与该物种的原始描述和其他后续描述进行比较。提出了对该物种的更完整的扫描电子显微镜(SEM)研究。使用核大亚基(LSU)核糖体DNA部分序列的基于二级结构的比对来推断S. lindsayae的系统发生位置。使用在PHASE 2软件中实现的碱基配对替换模型和贝叶斯推理来推断系统发育树,并显示林氏沙门氏菌为Stegelletina分类群的姐妹群。

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