Euplotes rariseta Curds, West and Dorahy, 1974
|
publication ID |
https://doi.org/ 10.12651/JSR.2019.8.1.128 |
|
DOI |
https://doi.org/10.5281/zenodo.8139598 |
|
persistent identifier |
https://treatment.plazi.org/id/03965A7A-FFE1-691D-F4FF-F974FDBBFA4A |
|
treatment provided by |
Felipe |
|
scientific name |
Euplotes rariseta Curds, West and Dorahy, 1974 |
| status |
|
2. Euplotes rariseta Curds, West and Dorahy, 1974 View in CoL View at ENA
( Figs. 1 View Fig e-h, 4a-f)
Material examined. Korea: Masan Bay (35°10 ʹ 08 ʺ N, 128°35 ʹ 58 ʺ E), 31 May 2016 and GoogleMaps Jongdal-ri Beach, Jeju Island (33°30 ʹ 47 ʺ N, 126°53 ʹ 56 ʺ E), 14 July 2018, from marine intertidal sediments, collected by Won Je Lee. GoogleMaps Type strains, live cells are kept with the Korean Culture Collection of Protists GoogleMaps , Kyungnam University, Korea, reference ‘ KM401 ’ and ‘ KM444 ’.
Description. Cells are 32-44 × 23-35 μm in vivo and 23- 30 × 17-20 μm in protargol, ovoid and dorso-ventrally flattened. The peristome is wide, spindle-shaped and surrounded by 18-22 adoral membranelles, which extend for about 72% of the cell length ( Figs. 1e, 1f View Fig , 4a, 4 View Fig d-f). Cytoplasm colorless. Few food vacuoles and single contractile vacuole located in the middle of the cell ( Fig. 4a, 4b View Fig ). Cirri usually strong; 10 fronto-ventral, 5 transverse, and 2 caudal cirri ( Fig. 4b, 4c View Fig ). Caudal cirrus below AZM is slightly stout. Ventral surface heavily sculptured with 6 longitudinal ridges ( Fig. 4b, 4c View Fig , arrowheads). Dorsal surface with 6 double-edged longitudinal ridges ( Fig. 4a View Fig , arrowheads). Dorsal bristles sparse; 6 kinetics ( Figs. 1g View Fig , 4e View Fig ). The macronucleus (Ma) is horseshoe-shaped, and the micronucleus (Mi) is small and situated anteriorly ( Figs. 1 View Fig f-h, 4e). The cells are capable of encystment. Move by crawling on substrate. This species was found at Masan Bay ( Korea; Strain KM401) and Jongdal-ri Beach (Jeju, Korea; Strain KM444).
Remarks. Euplotes rariseta was originally reported by Curds et al. (1974) from Aberystwyth, Wales ( UK). Our observations are in good agreement with those of Curds et al. (1974), Ma et al. (2007) and Song and Packoff (1997). Euplotes rariseta is similar to E. parabalteatus and E. trisulcatus in cell length, but can be distinguished because E. parabalteatus has 8-11 dikinetids in mid-DK (vs 5-7) and inconspicuous dorsal ridges, and E. trisulcatus has 25-36 AM (vs 18-22) and 7-11 dikinetids in mid-DK, and ( Tables 1 View Table 1 , 2 View Table 2 ). This species is mostly similar to E. orientalis in cell length and in the numbers of AM, DK and dikinetids in mid-DK, but they can be distinguished because E. rariseta has 10 FVC (vs 8) and 1 MC (vs 2) ( Tables 1 View Table 1 , 2 View Table 2 ). In addition, the 18S rRNA sequences of E. rariseta and E. orientalis have 93% similarity.
NCBI BLASTN search result shows that the closest strains to our strains (KM401, KM444) are E. rariseta stains (GenBank Accession No. AJ305248 View Materials , FJ423449 View Materials ; Identity 99%). The 18S rRNA sequences of stain KM401 and KM444 are 1,742 bp and 1,738 bp in length, respectively.
Habitat. Marine
Distribution. Korea (Inchon, Park et al., 2017; Masan Bay and Jeju Island, this study), Antarctica (Ross Sea, Valbonesi and Luporini, 1990; Albergoni et al., 2000), Bellings-hausen Sea ( Thompson, 1972), China ( Song and Packroff, 1997; Jiang et al., 2010b), Indian Ocean ( Dallai et al., 1987), Red Sea (Solar lake; Wilbert and Kahan, 1981), Somalia (Gesira; Dallai et al., 1987), UK (Aberystwyth, Wales, Curds et al., 1974), Weddell Sea ( Agatha et al., 1990; Petz et al., 1995).
Deposition. National Institute of Biological Resources, Korea (NIBRPR0000107971) for KM401 strain.
NCBI GenBank Accession Numbers: Strain KM 401: MK028833 View Materials , Strain KM444: MK050525 View Materials
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
|
Kingdom |
|
|
Phylum |
|
|
Class |
|
|
Order |
|
|
Family |
|
|
Genus |