Urosomoida sejongensis Jung, Baek, Kim & Choi, 2016, n. sp.
Urosomoida sejongensis n. sp. (Fig. 1–2; Table 1) Diagnosis. Size in vivo 75–130 × 20–35 Μm; slender to elongated shape; flexible but not contractile; grayish under low magnification. Contractile vacuole slightly above left of mid-body. 1 micronucleus between two macronuclear nodules. Groups of cort...
| Main Authors: | , , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2016
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| Subjects: | |
| Online Access: | https://doi.org/10.5281/zenodo.5624274 http://treatment.plazi.org/id/03BA47397478FFE8FCF030202860FEDB |
| Summary: | Urosomoida sejongensis n. sp. (Fig. 1–2; Table 1) Diagnosis. Size in vivo 75–130 × 20–35 Μm; slender to elongated shape; flexible but not contractile; grayish under low magnification. Contractile vacuole slightly above left of mid-body. 1 micronucleus between two macronuclear nodules. Groups of cortical granules sparsely distributed. Ring-shaped structures in cytoplasm. 17 frontal-ventraltransverse cirri composed of 3 frontal, 1 buccal, 4 frontoventral, 3 postoral ventral, 2 pretransverse ventral, and 4 transverse cirri. 1 left and 1 right marginal cirral row. On average 28 adoral membranelles with undulating membranes in Oxytricha pattern. 4 kineties composed of 3 dorsal and 1 dorsomarginal kineties. 3 caudal cirri. Type locality. Freshwater near the King Sejong Station, King George Island, Antarctica (62°14′22.8′′S, 58°44′40.1′′W). FIGUIRE 1. Morphology of Urosomoida sejongensis n. sp. in vivo (A–C) and after protargol impregnation (D, E). A. Ventral view of representative specimen. B, C. Dorsal views showing contractile vacuole (CV) and cortical granules (CG), respectively. Dorsal (D) and ventral (E) view of holotype specimen. AZM—adoral zone of membranelles; BC—buccal cirrus; DK—dorsal kineties; DM—dorsomarginal kinety; EM—endoral membrane; FC—frontal cirri; FVC—frontoventral cirri; LMR—left marginal cirral row; Ma—macronuclear nodules; Mi—micronucleus; PM—paroral membrane; PTVCpretransverse ventral cirri; PVC—postoral ventral cirri; RMR—right marginal cirral row; TC—transverse cirri. Scale bars: 50 µm. All measurements in Μm. CV—coefficient of variation (%); Max—maximum; Min—minimum; N—number of specimens investigated; SD—standard deviation; SE—standard error of arithmetic mean. Type slides. One holotype slide (NIBRPR0000106568) and one paratype slide (ACNS 000272) of protargolimpregnated specimens have been deposited in the National Institute of Biological Resources and the Korea Polar Research Institute (KOPRI) in South Korea, respectively. Relevant specimens including holotype have been marked with ... |
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