Zagumyonnyi Dmitry G, Radaykina Liudmila V, Keeling Patrick J, Tikhonenkov Denis V
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, 152742 Borok, Russia.
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, 152742 Borok, Russia.
Eur J Protistol. 2022 Oct;86:125916. doi: 10.1016/j.ejop.2022.125916. Epub 2022 Aug 27.
New data on the species diversity and morphology of centrohelid heliozoans in freshwater, marine, and soil habitats of Ukraine were obtained. Cell coverings (scales and spicules) were observed using scanning and transmission electron microscopy. Eighteen species from seven genera of centrohelids and unidentifiable Heterophrys-like organisms were revealed. The micrographs and detailed morphological descriptions of observed species and their comparison with previously found centrohelids are provided. A new genus and three new species Acanthocystis tyrasiana sp. nov., Pterocystis borysthenica sp. nov., and Khitsovia mutabilis gen. et sp. nov. were described. Molecular phylogenetic analyses based on 18S rRNA sequences, obtained for three strains, expand our knowledge on the diversity and evolution of centrohelids within the Pterista clade. The novel data on the morphology of studied scales supplement available information on the intraspecific variability of centrohelid heliozoans.
获得了关于乌克兰淡水、海洋和土壤生境中中心太阳虫物种多样性和形态的新数据。使用扫描电子显微镜和透射电子显微镜观察细胞覆盖物（鳞片和骨针）。揭示了来自七个中心太阳虫属的18个物种以及无法鉴定的类异养虫生物。提供了观察到的物种的显微照片和详细形态描述，以及它们与先前发现的中心太阳虫的比较。描述了一个新属和三个新物种，即蒂拉斯亚棘球虫新种、第聂伯河翼球虫新种和可变希特索维亚虫新属新种。基于为三个菌株获得的18S rRNA序列进行的分子系统发育分析，扩展了我们对翼太阳虫进化枝内中心太阳虫多样性和进化的认识。关于所研究鳞片形态的新数据补充了中心太阳虫种内变异性的现有信息。
