Liu Ziyan, Wang Kexin, Zhang Chengliang, Jiang Yuwen, Song Ranran, Zhang Tengyue, Li Fengchao
The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China.
The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, Baoding 071002, China.
Eur J Protistol. 2024 Oct;96:126124. doi: 10.1016/j.ejop.2024.126124. Epub 2024 Oct 20.
A new urostylid ciliate, Holostichides (Holostichides) parachardezi, collected from a Chinese tropical city, was studied using morphological and molecular methods. Diagnostic features of the new species include: size 140-180 × 30-60 μm in vivo; 25-43 macronuclear nodules; colourless cortical granules; three to six frontoterminal cirri; a midventral complex composed of seven to eleven cirral pairs and one midventral row of five to eleven cirri; four bipolar dorsal kineties and six to nine caudal cirri in four groups; and a terrestrial habitat. Its ontogenesis follows the typical Holostichides mode in that (1) the proximal portion of the parental adoral zone of membranelles is partly renewed and the opisthe's oral primordium originates very close to the midventral complex; (2) the last anlage n generates the frontoterminal cirral row, and the midventral complex is formed from anlage IV to n - 1; and (3) both marginal rows and dorsal kinety anlagen develop within the parental rows. The present SSU rDNA phylogenies corroborated the monophyly of the genus Holostichides.
从中国一个热带城市采集到一种新的尾柱目纤毛虫——副查氏全列虫（Holostichides (Holostichides) parachardezi），采用形态学和分子方法对其进行了研究。新物种的诊断特征包括：活体大小为140 - 180×30 - 60μm；有25 - 43个大核结节；无色皮质颗粒；三到六条额端纤毛；一个由七到十一条纤毛对和一排由五到十一条纤毛组成的中腹复合体；四条双极背纤列和四组六到九条尾纤毛；以及陆地生境。其个体发育遵循典型的全列虫模式，即：(1) 亲代口围带膜状器的近端部分部分更新，后仔虫的口原基起源于非常靠近中腹复合体的位置；(2) 最后一个原基n产生额端纤毛列，中腹复合体由原基IV到n - 1形成；(3) 边缘列和背纤列原基均在亲代列内发育。目前的小亚基核糖体DNA系统发育树证实了全列虫属的单系性。
