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Phylogeny of a new ciliate family Clampidae fam. nov. (Protista: Ciliophora), with notes on morphology and morphogenesis
Zoological Journal of the Linnean Society ( IF 3.0 ) Pub Date : 2021-10-20 , DOI: 10.1093/zoolinnean/zlab102
Wenxin Xu 1, 2 , Jiyang Ma 2 , Yuan Li 2 , William A Bourland 3 , Giulio Petroni 4 , Xiaotian Luo 1 , Weibo Song 2
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Hypotrichs comprise a highly differentiated and diversified group of ciliates with an evolutionary history characterized by an exceptional number of convergences and reversions. A new hypotrich ciliate from a freshwater fishpond is investigated based on morphological, morphogenetic and molecular data. The phylogenetic analyses reveal that the new species is closely related to Simplicitergida despite the absence of zigzag-patterned midventral cirral pairs, a common feature of simplicitergids. The phylogenetic position of this atypical simplicitergid species is strongly supported by the conserved features of dorsal ciliature and nuclear apparatus, which are probably more informative than cirral patterns for higher-rank classification. The close phylogenetic relationships among those Simplicitergida with varied cirral patterns could be explained by evolutionary convergences and reversions. The new species is recognized mainly by three frontoventral rows, several short midventral rows, two long midventral rows and the absence of zigzag-patterned midventral cirral pairs. Based on comprehensive phylogenetic analyses, together with detailed morphological and morphogenetic comparisons, a new family, Clampidae fam. nov., is proposed for the new genus and species, Clampia sinica gen. et sp. nov. In addition, an emended diagnosis of the morphologically similar family Epiclintidae is provided.

中文翻译:

一个新的纤毛虫科钳科家族的系统发育。十一月 (Protista: Ciliophora),附有形态和形态发生的注释

Hypotrichs 包括高度分化和多样化的纤毛虫群,其进化历史以异常数量的收敛和回归为特征。基于形态学、形态发生和分子数据,研究了一种来自淡水鱼塘的新的次毛纤毛虫。系统发育分析表明,尽管没有锯齿形中腹卷对,但新物种与 Simplicitergida 密切相关,这是 simplicitergids 的一个共同特征。这种非典型 simplicitergid 物种的系统发育位置得到了背部纤毛和核装置的保守特征的强烈支持,这些特征可能比高级分类的环状模式更具信息性。那些具有不同循环模式的单翅目之间密切的系统发育关系可以通过进化的趋同和逆转来解释。新物种主要通过三个前腹排、几个短的中腹排、两个长的中腹排和没有锯齿形中腹卷对来识别。基于全面的系统发育分析,以及详细的形态和形态发生比较,一个新的家庭,Clampidae fam。11 月,提出了新的属和种,Clampia sinica gen。等人。十一月 此外,还提供了对形态相似的家族 Epiclintidae 的修正诊断。两个长的中腹排和没有锯齿形的中腹卷对。基于全面的系统发育分析,以及详细的形态和形态发生比较,一个新的家庭,Clampidae fam。11 月,提出了新的属和种,Clampia sinica gen。等人。十一月 此外,还提供了对形态相似的家族 Epiclintidae 的修正诊断。两个长的中腹排和没有锯齿形的中腹卷对。基于全面的系统发育分析,以及详细的形态和形态发生比较,一个新的家庭,Clampidae fam。11 月,提出了新的属和种,Clampia sinica gen。等人。十一月 此外,还提供了对形态相似的家族 Epiclintidae 的修正诊断。
更新日期:2021-10-20
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