Breiner Hans-Werner, Foissner Wilhelm, Stoeck Thorsten
University of Kaiserslautern, Department of Ecology, D-67663 Kaiserslautern, Germany.
J Eukaryot Microbiol. 2008 Mar-Apr;55(2):100-2. doi: 10.1111/j.1550-7408.2008.00307.x.
At its discovery in 1982, the ciliate genus Colpodidium was assigned to the Class Colpodea. Redescriptions of the type species Colpodidium caudatum caused the establishment of a new family (Colpodidiidae). Based on ontogenetic data, eventually a new order-Colpodidiida-was established and hypothesized to belong to the Class Nassophorea. Despite a remarkable increase in the number of colpodidiid species, no sequence data were available to confirm or reject either class assignment or to assess the phylogenetic validity of the Colpodidiidae and the Colpodidiida. We here retrieved and phylogenetically analyzed the SSrDNA sequences of C. caudatum from a Namibian soil and an as-yet undescribed colpodidiid ciliate from the Chobe River floodplain, Botswana. Bayesian inference methods and evolutionary distance analyses confirmed the assignment of these taxa to the class Nassophorea.
1982年发现纤毛虫类的尾柱虫属时，它被归入尾柱虫纲。对模式种尾柱尾柱虫的重新描述导致了一个新科（尾柱虫科）的建立。基于个体发育数据，最终建立了一个新目——尾柱虫目，并推测其属于鼻口纲。尽管尾柱虫科物种的数量显著增加，但没有序列数据可用于确认或否定其纲的归属，也无法评估尾柱虫科和尾柱虫目的系统发育有效性。我们在此检索并对来自纳米比亚土壤的尾柱尾柱虫以及来自博茨瓦纳乔贝河漫滩的一种尚未描述的尾柱虫科纤毛虫的小亚基核糖体DNA（SSrDNA）序列进行了系统发育分析。贝叶斯推断方法和进化距离分析证实了这些分类单元属于鼻口纲。
