Geometric approaches to the taxonomic analysis of centipede gonopods (Chilopoda: Scutigeromorpha)
Geometric approaches to the taxonomic analysis of centipede gonopods (Chilopoda: Scutigeromorpha)
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DOI：
10.1111/j.1096-3642.2009.00564.x
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发表时间：
2009-06-01
影响因子：
2.8
通讯作者：
Edgecombe, Gregory D.
中科院分区：
文献类型：
--
作者：
Bolton, Samuel J.;MacLeod, Norman;Edgecombe, Gregory D.
盾形目的雌性生殖足传统上发挥着重要的分类学作用，但迄今为止仅使用简单的指数和一般形状描述进行比较。使用扩展特征形状分析和相对扭曲分析来评估这些结构的分类信息内容。采用基于地标和半地标的采样方案相结合，对包括 Scutigera、Sphendononema、Thereuonema、Thereuopoda 和 Thereuopodina 在内的 5 个物种的生殖足形状以及澳大利亚东部的三种 Allothereua 物种进行了表征。使用质心邻近距离度量对扩展特征形状和相对扭曲形状空间中的规范变量排序进行交叉制表，导致很大比例的标本被正确分配到属、种和亚种组。这些结果表明，在每个级别上，类群之间都存在显着且一致的性足形状差异。特征形状和相对扭曲结果的比较还表明，结合的地标-半地标采样方法可以最好地捕获性足形状变化的分类学相关方面。 (C) 2009 年自然历史博物馆，伦敦，《林奈学会动物学杂志》，2009 年，156，239-259。
The female gonopods of the Scutigeromorpha have traditionally played an important taxonomic role but to date have only been compared using simple indices and general shape descriptions. Extended eigenshape analysis and relative warps analysis were used to evaluate the taxonomic information content of these structures. Gonopod shapes of five species including members of Scutigera, Sphendononema, Thereuonema, Thereuopoda, and Thereuopodina, and three eastern Australian species of Allothereua were characterized using a combination of landmark and semi-landmark-based sampling protocols. Cross-tabulation of canonical variates ordination in the extended eigenshape and relative warps shape spaces, using a centroid-proximity distance metric, resulted in a high proportion of specimens being correctly assigned to genus, species, and subspecies groups. These results indicate that substantial and consistent gonopod shape differences between taxa occur at each of these levels. Comparison of the eigenshape and relative warps results also suggests that a combined landmark-semi-landmark sampling approach best captures the taxonomically relevant aspects of gonopod shape variation. (C) 2009 Natural History Museum, London, Zoological Journal of the Linnean Society, 2009, 156, 239-259.