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Zootaxa. 2014 Jul 4;3827(3):375-86. doi: 10.11646/zootaxa.3827.3.7.

Morphology and Phylogeny of a New Frontonia Ciliate, F. paramagna spec. nov. (Ciliophora, Peniculida) from Harbin, Northeast China.

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College of Life Science and Technology, Harbin Normal University, Harbin 150025, China; Email: unknown.
Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China; Email: unknown.
Zoology Department, College of Science, King Saud University, P.O.Box 2455, Riyadh 11451, Saudi Arabia; Email: unknown.
Corresponding Author: Zijian Qiu, College of Life Science and Technology, Harbin Normal University, Harbin 150025, China.; Email:


This paper describes a new Frontonia ciliate, F. paramagna spec. nov., sampled from freshwater in Harbin, northeast China, based on its morphology, infraciliature, ultrastructure and small subunit ribosomal RNA gene information. The new species is defined by the following features: large sized freshwater form, 400-610 × 110-160 μm in vivo, about 179-201 somatic kineties, three peniculi, each with four kineties, three vestibular and six or seven postoral kineties, one elongated-elliptical macronucleus, centrally-located, a single contractile vacuole, without canals, located right-dorsally in the posterior half of the body. Sequence alignment and phylogenetic analyses based on the small subunit ribosomal RNA (SSU rRNA) gene indicated that the new species has characters distinct from its known congeners. The ultrastructure of the trichocyst and other extrusomes, and the subpellicular fibre system, were observed by both scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Much of the ultrastructure is here given for the first time by SEM, and these features provide complementary data for taxonomic purposes.

[Indexed for MEDLINE]

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