• Title/Summary/Keyword: Ciliophora

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Unrecorded species of Korean protozoans discovered through the project of 'Discovery of Korean Indigenous Species' III

  • Kyu-Seok Chae;Kang-San Kim;Jongwoo Jung;Gi-Sik Min
    • Journal of Species Research
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    • v.12 no.4
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    • pp.355-361
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    • 2023
  • In this paper, we present unrecorded protozoans of Korea that were discovered, through the 'Discovery of Korean Indigenous Species' project hosted by the 'National Institute of Biological Resources (NIBR)'. A taxonomic account is provided for each identified species, offering comprehensive information such as species name, Korean name, collection site, synonyms, specimen vouchers, diagnoses, and figures. This study introduces 13 previously unrecorded Korean protozoan species that are classified into three phyla: Amoebozoa, Cercozoa, and Ciliophora. Notably, the cercozoan family Chlamydophryidae was recorded in Korea for the first time, together with the discovery of three previously unreported genera: Diaphoropodon within Cercozoa, and Metauroleptus and Hemicycliostyla within Ciliophora.

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 Records of Three Oxvtrichid Hvpotrichs (Ciliophora : Hvpotrichida: Oxvtrichidae) from the Han River in Seoul, Korea (서울지역 한강에 서식하는 3종의 미기록 하모충류)

  • Shin, Mann-Kyoon;Kim, Won
    • The Korean Journal of Zoology
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    • v.36 no.2
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    • pp.223-230
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    • 1993
  • Three species of oxvtrichid hypotrichs collected from the Han River on Sune 6, and August 26, 1992 have been cultured at laboratory. Thev were identified as Oxvtricha hvmenostoma Stokes, .1887, 0. hoemutoplasma Blatterer and Foissner, 1990 and Tochvsomu pellionellum (Muller, 1773). These species are reported for the first time from Korea. Morphological and biometrical studies were carried out by observing both wild and cultured cells and the infraciliature of silver stained specimens. The present species were redescribed and analvzed biometricallv.

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New Record of Ciliates, Blepharisma undulans and B. steini (Ciliophora: Heterotrichida: Blepharismidae) from Korea

  • Lee, Eun-Sun;Shin, Mann-Kyoon
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.1
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    • pp.41-47
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    • 2009
  • Two ciliate species of Blepharisma were collected from the riverine wetland and mountain peak soil in Korea, Blepharisma undulans Stein, 1867 and B. steini Kahl, 1932, which are reported for the first time from Korea. The description was based on the observations of live and protargol impregnation specimens. Diagnostics of these species (Blepharisma undulans vs. B. steini) are as follows. Body length/width ratio in vivo about 6/1 vs. 2/1, shaped in spindle vs. pyriform to ellipsoid and colored in pinkish vs. reddish. Macronuclei 2 vs. 1, with 4-9 vs. 4-7 spherical micronuclei. Adoral zone of membranelles extends from anterior end to 1/3 vs. 1/2-2/3 of body length, with 47-56 vs. 33-45 adoral membranelles. The numbers of somatic kineties are 22-27 vs. 18-22.

New record of three Aspidisca species(Protozoa, Ciliophora) from South Korea

  • Ji Hye Choi;Atef Omar;Jae-Ho Jung
    • Journal of Species Research
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    • v.12 no.1
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    • pp.90-94
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    • 2023
  • The morphology and infraciliature of three newly recorded Aspidisca species in Korea, two collected from the eastern coast and one collected from Jeju Island, were investigated in vivo and after protargol impregnation. The three species are as follows: A. dentata Kahl, 1928, A. hexeris Quennerstedt, 1869, and A. polystyla Stein, 1859. The three species are characterized by having a "polystyla-arrangement" of frontoventral cirri: 1) A. dentata is characterized by having a broadly rotund body shape, a distinct peristomial spur, and a dorsal thorn; 2) A. hexeris is characterized by a broadly oval body shape, four projections along the left margin of body, and the single peristomial spur; and 3) A. polystyla has the broadly rotund body shape, transverse cirri each split into several parts (especially in vivo), and lacking of the peristomial spur. Among them, A. dentata and A. polystyla are poorly known and lack morphological description based on silver staining. In the present study, we provide a brief diagnosis, remarks, and photomicrographs.