title: Description of a marine peritrichous ciliate, Pseudovorticella sinensis n. sp. (Ciliophora, Peritrichia) from China.
abstract: A new marine peritrich ciliate, Pseudovorticella sinensis n. sp. was isolated from a shrimp-farming pond in the littoral area of Qingdao, China. The morphology, infraciliature, and silverline system were studied based on living and silver-impregnated specimens. This species is characterized by (1) an elongated bell-shaped body that measures 50-60 x 35-45 microm in vivo, (2) one large, ventrally located contractile vacuole, and (3) a pellicle covered by a layer of transparent, cortical vesicles. The number of transverse silverlines from the peristomial area to the aboral ciliary wreath is 26-32, and from the aboral ciliary wreath to the scopula is 12-15. The stalk measures about 160-250 microm long x 5-6 microm wide. The spasmoneme has one row of conspicuous thecoplasmic granules, which are about 0.8 microm in diameter.
authors.affiliation: Laboratory of Protozoology, KLM, Ocean University of China, Qingdao 266003, People's Republic of China.
authors.forename: Daode
authors.initials: D
authors.lastname: Ji
authors.forename: Weibo
authors.initials: W
authors.lastname: Song
authors.forename: Khaled A S
authors.initials: KA
authors.lastname: Al-Rasheid
mesh_terms: D000818:Animals; D002681:China; D016798:Ciliophora / Q000648:ultrastructure*; D008857:Microscopy, Interference; D014867:Water / Q000469:parasitology*
chemical_list: D014867:Water