Journal
EUROPEAN JOURNAL OF PROTISTOLOGY
Volume 63, Issue -, Pages 105-116Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ejop.2018.01.002
Keywords
Freshwater; Frontonia; Frontonia shii spec. nov; Phylogeny; SSU rDNA
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Funding
- Natural Science Foundation of China [31501844, 31601866, 31430077]
- Heilongjiang Province Science Foundation for Youths [QC2017017]
- University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province [UNPYSCT-2017180]
- Deanship of scientific Research at King Saud University-Saudi Arabia [RG-242]
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The morphology and infraciliature of two Frontonia species, F. shii spec. nov. and F. paramagna Chen et al., 2014, isolated from a freshwater pond in northeastern China, were investigated using living observation and silver staining methods Frontonia shii spec. nov. is recognized by the combination of the following characters: freshwater Frontonia, size in vivo about 220-350 x 130-250 mu m, elliptical in outline; 128-142 somatic kineties; three or four vestibular kineties, six or seven postoral kineties; peniculi 1-3 each with four kineties; single contractile vacuole with about 10 collecting canals. The improved diagnosis for F. paramagna is based on the current and previous reports. Comparisons among freshwater Frontonia are also provided. The small subunit ribosomal rRNA gene (SSU rDNA) sequences of the two species are characterized and phylogenetic analyses based on these sequences show that both species fall into the core Glade of the genus Frontonia, and this genus is not monophyletic. (C) 2018 Elsevier GmbH. All rights reserved.
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