Kentrophyllum setigerum ( Quennerstedt, 1867 )

Kim, Se-Joo & Min, Gi-Sik, 2016, New records of two pleurostomatids (Ciliophora: Litostomatea) from Korea, Journal of Species Research 5 (3), pp. 343-347 : 345-347

publication ID	https://doi.org/ 10.12651/JSR.2016.5.3.343
DOI	https://doi.org/10.5281/zenodo.13141999
persistent identifier	https://treatment.plazi.org/id/03D2940D-8004-FFD1-FF77-F961FDA6F896
treatment provided by	Felipe
scientific name	Kentrophyllum setigerum ( Quennerstedt, 1867 )
status

Treatment

Kentrophyllum setigerum ( Quennerstedt, 1867)

ȒAEṻṄ나șȁ섬AEệ ( Table 1, Fig. 2 View Fig )

Loxophyllum setigerum Quennerstedt, 1867, p. 6 View in CoL , Pl. I 4.

Loxophyllum verrucosum Dragesco, 1965, p. 373 View in CoL , Fig. 12.

Kentrophyllum setigerum Petz et al., 1995, p. 55 ; Wu et al., 2015, p. 11.

Material examined. Specimens were collected from the Bongpoport (38°17′N, 128°33′E), Gangwondo in the East Sea on 1213 Mar 2008. Environmental conditions of the sampling site were 10.6°C, ca 14.8 psu, and pH ca 8.55 GoogleMaps .

Description. Live cell size 150200 × 6080 μm, wide and flat leafshaped in outline; laterally compressed; many longitudinal shallow grooves appeared ( Fig. 2A View Fig , EG). Spines thin, needleshaped, usually detectable in live specimens, evenly spaced along body margin, except cytostome region; invisible after protargol staining ( Fig. 2E View Fig ). Peribuccal papillae placed along cytostome, conspicuous, 4056 μm long in live specimens ( Fig. 2E, J View Fig ).

Four to eleven Ma connected by threadlike funiculus, leaned on ventral side of body center, usually detectable in live specimens; each nodule eggshaped, about 10× 7 μm after fixation; Mi not observed ( Fig. 1F, H, I, M View Fig ). 69 CVs recognized along dorsal margin, usually 1013 μm in diameter ( Fig. 1G View Fig ).

Ex barshaped, curved, about 12 μm long; recognizable in live cells; densely distributed along whole body, except cytostome region; some scattered inside body ( Fig. 2 View Fig HJ, M).

Cytoplasm slightly grayish colored, with many large and shining globules ( Fig. 2E, F, J View Fig ). Sutures formed on right and left sides ( Fig. 2C, D, G, K View Fig ). Cirri and membranelles of feeding hypotrichs detected after fixation ( Fig. 2M View Fig ). Movement by slow gliding, or swimming.

Ciliary pattern typical of Kentrophyllum ( Fig. 2C, D, L View Fig ). Two PK placed around oral slit, PK1 on left, and PK2 on right; kinetid rows more tightly packed than somatic kineties; PK1 contains dense dikinetids in anterior 2/3, and a continuous row of monokinetids, reaches to posterior end; PK2 composed of dikinetids, enclosed fullbody, formed a circle. DB not detected. All somatic kineties composed of monokinetids; 2932 LSK, with PK1; 3440 RSK, including PK2. Nd stretches to 4/5 of the cytoplasm region.

Distribution. USA, Japan, Africa, and Korea (This study).

Deposition. A voucher slide with protargolimpregnated specimens was deposited in the National Institute of Biological Resources in Korea (NIBRPR0000107166).

Accession number of SSU rDNA. KX581243KX 581245.

Remarks. Kentrophyllum setigerum was originally described by Quennerstedt (1867). After that, it had been an ambiguous status with its congeners, K. pseudosetigerum , K. qingdaoense , K. verrucosum . Recently, the genus Kentrophyllum was revised by Wu et al. (2015) and then it have been improved the definition of K. setigerum . Characteristics of the Korean population correspond very well with the African population ( Dragesco, 1965) synonymized by Wu et al. (2015) in most respects, such as habitat, body shape and size, status of spines and peribuccal papillae, and the number of nuclei, contractile vacuoles and somatic kineties.

Kingdom	Chromista
Phylum	Ciliophora
Class	Gymnostomatea
Order	Pleurostomatida
Family	Amphileptidae
Genus	Kentrophyllum