title: Ontogenesis and molecular phylogeny of the marine ciliate Diophryopsis hystrix: implications for the systematics of the Diophrys-like species (ciliophora, spirotrichea, euplotida).
abstract: The cortical development of Diophryopsis hystrix, a small marine euplotid ciliate, was observed during binary division. The pattern of morphogenesis is generally similar to that of other Diophrys-like species, with the exception of the marginal cirrus, which develops in a unique manner in D. hystrix being formed from the posterior end of the dorsal kinety anlage, in a similar manner to the formation of the caudal cirri. In the small subunit (SS) rRNA gene sequence tree, Diophryopsis represents a distinct clade separate from Diophrys. Furthermore, our ontogenetic and SSrRNA gene sequence data both support the suggestion that the Diophrys complex is sister to Uronychia, and should be considered as a distinct subfamily within the family Uronychiidae, i.e. Diophryinae Jankowski, 1979, comprising Diophrys, Diophryopsis, and Paradiophrys. Diagnoses of the subfamilies Diophryinae and Uronychiinae are provided.
authors.affiliation: Laboratory of Protozoology, Ocean University of China, Qingdao 266003, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Shao
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Zhang
authors.forename: Khaled A
authors.initials: KA
authors.lastname: Al-Rasheid
authors.forename: Alan
authors.initials: A
authors.lastname: Warren
authors.forename: Weibo
authors.initials: W
authors.lastname: Song
mesh_terms: D000818:Animals; D016798:Ciliophora / Q000145:classification* / Q000166:cytology / Q000235:genetics / Q000254:growth & development*; D016054:DNA, Protozoan / Q000032:analysis / Q000235:genetics; D020459:Genes, rRNA; D009024:Morphogenesis; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D013045:Species Specificity
chemical_list: D016054:DNA, Protozoan