Description of Holostichides (Extraholostichides) eastensis tianjinensis subgen. nov. subspec. nov. (Ciliophora, Hypotricha) from northern China

IF 1.9 2区生物学 Q4 MICROBIOLOGY

European journal of protistology Pub Date : 2023-12-12 DOI:10.1016/j.ejop.2023.126048

Ziyan Liu, Ziyu Wang, Qi Zhang, Qiukun Wang, Fengchao Li

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Abstract

The morphology and morphogenesis of a new urostylid, Holostichides (Extraholostichides) eastensis tianjinensis subgen. nov. subspec. nov. were analyzed. The new subspecies differs from the nominotypical subspecies H. (Extraholostichides) eastensis eastensis Wang et al., 2022 by the relatively long frontoterminal row (about 60% vs. 30% of body length), colorless cortical granules (vs. dark brown), two (vs. one) parabuccal cirri, and usually an extra cirrus behind the first midventral pair (vs. lacking). Based on the difference in the frontal ciliature, we split Holostichides into two subgenera: H. (Extraholostichides) subgen. nov. (type species Holostichides eastensis Wang et al., 2022; with a short cirral row behind the middle frontal cirrus) and H. (Holostichides) Foissner, 1987 (type species Holostichides chardezi Foissner, 1987; lacking this short row). The main morphogenetic characters of the new subspecies are very similar to those of H. (Extraholostichides) eastensis eastensis except for some minor differences. Phylogenetic analyses based on SSU rDNA sequences indicate that H. (Extraholostichides) subgen. nov. is monophyletic and nested within the monophyletic genus Holostichides, which is sister to Eschaneustyla lugeri.

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描述来自中国北方的 Holostichides (Extraholostichides) eastensis tianjinensis subgen.

分析了一个新的尿囊虫--Holostichides (Extraholostichides) eastensis tianjinensis subgen.新亚种与提名亚种 H. (Extraholostichides) eastensis eastensis Wang et al.根据前额纤毛器的差异，我们将 Holostichides 分成两个亚属：新亚属（模式种 Holostichides eastensis Wang 等人，2022 年；在前额中部卷须后有一短卷须排）和 H. (Holostichides) Foissner, 1987.(模式种 Holostichides chardezi Foissner, 1987；缺少这一短排）。(Extraholostichides) eastensis eastensis 的主要形态特征非常相似，只有一些细微差别。基于 SSU rDNA 序列的系统发生学分析表明，H. （Extraholostichides）亚种是单系的，嵌套在单系的 Holostichides 属中，而 Holostichides 属与 Eschaneustyla lugeri 属是姊妹属。

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来源期刊

European journal of protistology 生物-微生物学

CiteScore

4.60

自引率

20.70%

发文量

审稿时长

14.6 weeks

期刊介绍： Articles deal with protists, unicellular organisms encountered free-living in various habitats or as parasites or used in basic research or applications. The European Journal of Protistology covers topics such as the structure and systematics of protists, their development, ecology, molecular biology and physiology. Beside publishing original articles the journal offers a forum for announcing scientific meetings. Reviews of recently published books are included as well. With its diversity of topics, the European Journal of Protistology is an essential source of information for every active protistologist and for biologists of various fields.