title: Microscopic investigation of three species of Diophrys (Ciliophora, Euplotida, Uronychiidae) from Japan, including Diophrys peculiaris nov. spec.
abstract: Three species of Diophrys, D. peculiaris nov. spec., D. cf. scutum and D. oligothrix, isolated from the New Nagasaki Fishing Port, Nagasaki, Japan, were investigated using live observation and protargol impregnation. Diophrys peculiaris nov. spec. can be recognized by having two characteristic clusters of rod-like structures and two groups of dikinetids located on anterior dorsal portion of cell. Morphogenetic data show that this part of the life cycle basically proceeds as in congeners, except for the formation of dikinetids under the rod-like structures. In the opisthe, the origin of dikinetids under the rod-like structures is still unknown, but the old dikinetids under the rod-like structures may be retained by the proter. The Japanese population of Diophrys cf. scutum resembles other populations of D. scutum well except for moniliform macronuclear segments. Our populations of D. oligothrix correspond well with other populations in terms of general morphology and ciliary pattern, in particular the continuous dorsal kineties with loosely arranged cilia.
authors.affiliation: Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity & College of Fisheries, Ocean University of China, Qingdao 266003, China.
authors.forename: Xiaotian
authors.initials: X
authors.lastname: Luo
authors.affiliation: Laboratory of Protozoology, Institute of Evolution and Marine Biodiversity & College of Fisheries, Ocean University of China, Qingdao 266003, China. Electronic address: xiaozhonghu@ouc.edu.cn.
authors.forename: Xiaozhong
authors.initials: X
authors.lastname: Hu
authors.affiliation: Faculty of Fisheries, Nagasaki University, Bunkyo machi 1-14, Nagasaki 852-8521, Japan.
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Suzuki
mesh_terms: D016798:Ciliophora / Q000145:classification* / Q000166:cytology*; D007564:Japan; D013045:Species Specificity
keywords: Diophrys peculiaris nov. spec.; Japan; Marine ciliate; Morphogenesis; Morphology; Taxonomy