• Title/Summary/Keyword: Sterkiella

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First Records of Two Aquatic Oxytrichid Ciliates (Ciliophora: Sporadotrichida: Oxytrichidae) from Korea

  • Kwon, Choon-Bong;Shin, Mann-Kyoon
    • Animal Systematics, Evolution and Diversity
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    • v.27 no.1
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    • pp.59-65
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    • 2011
  • For investigation of the Korean ciliate fauna, two oxytrichid ciliates, Histriculus histrio (Muller, 1773) and Sterkiella thompsoni Foissner, 1996, were collected from freshwater and brackish waters in South Korea, respectively. These two ciliates are reported for the first time in Korea. Descriptions were based on observations of live and silver stained specimens. Diagnoses of these species are as follows. Histriculus histrio: body is approximately $190{\times}85\;{\mu}m$ in size, almost ellipsoidal in shape, posterior part rather thin and very translucent. Cortical granules are absent. Both marginal rows are almost confluent at the posterior end. Six dorsal kineties are present. Sterkiella thompsoni: body is approximately $140{\times}50\;{\mu}m$ in size. Body margins are usually in parallel. Cortical granules are absent. Invariably, four dorsal kineties are present. Two caudal cirri are located on the dorsal surface. Three ellipsoidal macronuclear nodules are present.

COI DNA Barcoding for Sterkiella multicirrata (Ciliophora: Oxytrichidae) from South Korea

  • Kim, Kang-San;Ji, Su-Jung;Min, Gi-Sik
    • Animal Systematics, Evolution and Diversity
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    • v.36 no.1
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    • pp.7-9
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    • 2020
  • In the present study, the first mitochondrial cytochrome c oxidase subunit I gene (COI) sequence of Sterkiella multicirrata Li et al., 2018 is presented. To begin with, this species has been also morphologically recorded from South Korea, and this study was performed using genomic DNA of the Korean population. The newly obtained COI sequences of S. multicirrata were identical. And the inter-specific variation between S. multicirrata and S. histriomuscorum was noted at 14.3%. These values correspond well with the results of previous studies. However, because there are very few available COI sequences of stichotrichian in GenBank, it is concluded that continuous accumulation of data is needed for further study.

New record of three oxytrichid ciliates (Ciliophora: Oxytrichidae) from South Korea

  • Kyu-Seok, Chae;Gi-Sik, Min
    • Journal of Species Research
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    • v.11 no.4
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    • pp.287-295
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    • 2022
  • Three oxytrichid ciliates, Oxytricha lithofera Foissner, 2016, Pleurotricha curdsi (Shi et al., 2002) Gupta et al., 2003 and Sterkiella tetracirrata Kumar et al., 2015, were isolated from soils and confirmed as new to South Korea. Oxytricha lithofera was identified based on lithosomes, cortical granules, 21-33 adoral zone membranelles, one left (14-21 cirri) and one right (15-18) marginal rows and 5 transverse cirri. Pleurotricha curdsi was identified based on the possession of 2 macronuclear nodules, 2-3 micronuclei, 46-53 adoral zone membranelles, 3 frontal cirri, 5 frontoventral cirri, 5-7 postoral ventral cirri, 2-3 right marginal rows and 5 transverse cirri. Sterkiella tetracirrata was identified with respect 4 macronuclear nodules, 3-6 micronuclei, 25-40 adoral zone membranelles, 3 frontal cirri, 3 postoral ventral cirri, 2 pretransverse cirri, one left (21-30 cirri) and one right (24-30) marginal row and 4 transverse cirri. On the basis of 18S rDNA sequence analyses, we describe the phylogenetic positions of the three species.

New records of 24 ciliate species (Protozoa, Ciliophora) collected in South Korea

  • Kim, Ji Hye;Moon, Ji Hye;Jung, Jae-Ho
    • Journal of Species Research
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    • v.7 no.4
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    • pp.291-314
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    • 2018
  • We collected ciliates from terrestrial and aquatic habitats in Korea. Morphology was examined based on observations of both living and stained specimens. As a result of the observations, we found 24 previously unrecorded ciliate species to Korea. The morphology of these species are briefly described here: Tracheloraphis dracontoides, Condylostoma arenarium, Aspidisca steini, Australocirrus aspoecki, Sterkiella tricirrata, Stylonychia lemnae, Wallackia bujoreani, Bakuella marina, Anteholosticha sigmoidea, Holosticha pullaster, Urostyla grandis grandis, Chaenea vorax, Enchelys gasterosteus, Phialina salinarum, Mesodinium pulex, Aegyria oliva, Bryometopus pseudochilodon, Pinacocoleps tesselatus, Urozona buetschlii, Colpidium colpoda, Campanella umbellaria, Pseudovorticella difficilis, Zoothamnium parahiketes and Z. plumula. Among these 24 ciliates, S. tricirrata and U. grandis grandis were studied based on both the morphology and the morphogenesis.

Brief morphological description of stichotrichid ciliates (Ciliophora: Stichotrichia) from Korea

  • Kim, Kang-San;Min, Gi-Sik
    • Journal of Species Research
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    • v.7 no.4
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    • pp.323-332
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    • 2018
  • Ten stichotrichid ciliates were identified from six environmental samples, consisting of one freshwater, two seawater, and three soil samples. Morphological assessments were performed based on observations of both living and stained specimens. These species were assigned to two orders, three families, and nine genera, and we provide photographs and brief descriptions and remarks for each species: Parabirojimia similis Hu et al., 2002, Arcuseries warreni (Song & Wilbert, 1997) Huang et al., 2014, Gonostomum lajacola Foissner, 2016, Paragonostomoides xianicum Wang et al., 2017, Australocirrus oscitans Blatterer & Foissner, 1988, Monomicrocaryon crassicirratum Foissner, 2016, Monomicrocaryon euglenivorum fimbricirratum Foissner, 2016, Notohymena rubescens Blatterer & Foissner, 1988, Sterkiella multicirrata Li et al., 2018, Stylonychia ammermanni ammermanni Gupta et al., 2001.