title: Taxonomic characterization of two marine peritrichous ciliates, Epicarchesium corlissi n. sp. and Pseudovorticella jiangi n. sp. (Ciliophora: Peritrichia), from northern China.
abstract: Two new marine peritrich ciliates, Epicarchesium corlissi n. sp. and Pseudovorticella jiangi n. sp., were discovered in mariculture waters on the coast of northern China near Qingdao. Their morphology, infraciliature and silverline system were investigated based on both living and silver-impregnated specimens. E. corlissi is characterized as follows: marine Epicarchesium with dichotomously branched stalk; zooids elongate, approximately 60-70 x 25-35 microm in vivo; peristomial collar double-folded; macronucleus J-shaped; single, small contractile vacuole ventrally positioned; more than 60 striations between peristome and aboral trochal band, 13-18 from aboral trochal band to scopula; abstomal end of row 1 of infundibular polykinety 3 terminating at same level as rows 2 and 3 of infundibular polykinety 3; rows 2 and 3 of infundibular polykinety 3 much longer than row 1 and converging adstomally with infundibular polykinety 1. The new species P. jiangi is diagnosed as follows: marine Pseudovorticella; zooid inverted bell-shaped, approximately 80x60 microm in vivo and with a broad, flat, thin peristomial collar that measures approximately 90 microm across; pellicle with transparent cortical vesicles; macronucleus J-shaped; number of silverlines between peristome and aboral trochal band 20-24, from aboral trochal band to scopula 9-11; abstomal end of row 1 of infundibular polykinety 3 diverges from the other two rows of this polykinety and ends alongside row 3 of infundibular polykinety 2.
authors.affiliation: Laboratory of Protozoology, KLM, Ocean University of China, Qingdao 266003, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Sun
authors.forename: Weibo
authors.initials: W
authors.lastname: Song
authors.forename: Alan
authors.initials: A
authors.lastname: Warren
mesh_terms: D000818:Animals; D002681:China; D016802:Oligohymenophorea / Q000145:classification* / Q000302:isolation & purification / Q000648:ultrastructure*; D012623:Seawater / Q000469:parasitology*; D013045:Species Specificity