• Title/Summary/Keyword: Cyclostomata

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Crisiidae (Bryozoa: Cyclostomata) of Korea

  • Chae, Hyun Sook;Min, Bum Sik;Zagorsek, Kamil;Yang, Ho Jin;Kil, Hyun Jong;Seo, Ji Eun
    • Journal of Species Research
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    • v.9 no.3
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    • pp.280-287
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    • 2020
  • In the family Crisiidae (Bryozoa: Cyclostomata), 90 species have been recognized worldwide in seven genera: Bicrisia d'Orbigny, 1853, Crisia Lamouroux, 1812, Crisidia Milne Edwards, 1838, Crisiella Borg, 1924, Crisiona Canu & Bassler, 1928, Filicrisia d'Orbigny, 1853 and Unicrisia d'Orbigny, 1853. Four species in Crisiidae are described from 11 localities from 2008 to 2014, resulting in two new distributional records and two new species in Korea. The new additions to the fauna are: Crisia cuneata Maplestone, 1905, C. elongata Milne Edwards, 1838, C. jejuensis n. sp. and Filicrisia cygnus n. sp. A total of seven Korean crisiids with the addition of four species reported herein are recorded and distributed in three genera: Bicrisia, Crisia and Filicrisia. Accordingly, the Korean cyclostomatous bryozoans come to be 12 species, in eight genera, and five families. All of Korean Crisia eburneodenticulata specimens needed to be reexamined, thus this species is tentatively deleted from the Korean bryozoan fauna.

New species of Hornera (Bryozoa, Cyclostomata) from Jeju Island (Korea)

  • Zagorsek, Kamil;Chae, Hyun Sook;Min, Bum Sik;Yang, Ho Jin;Seo, Ji Eun
    • Journal of Species Research
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    • v.6 no.3
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    • pp.232-236
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    • 2017
  • The first occurrence of the genus Hornera (Bryozoa, Cyclostomata) is reported from waters around Jeju Island, Korean Peninsula. Hornera jeongsangi n. sp. differs from all known species of the genus Hornera in having very prominent spiny protrusions around the autozooidal apertures, which are not arranged in fascicles, the gonozooidal ooeciopore facing frontally and nonporous zooidal walls around the ooeciopore.

Four Korean Cyclostomatous Bryozoans - new additions to the Korean fauna

  • Chae, Hyun Sook;Kil, Hyun Jong;Zagorsek, Kamil;Seo, Ji Eun
    • Journal of Species Research
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    • v.7 no.4
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    • pp.348-353
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    • 2018
  • Four cyclostomatous bryozoans from Korea belong to the genera Bicrisia, Nevianipora, Tubulipora and Crisia are described here for the first time. Of which, Bicrisia erecta Mawatari & Mawatari, 1973, Nevianopora pulcherrima (Kirkpatrick, 1890) and Tubulipora similis Liu in Liu, Yin & Ma, 2001 are newly added to the Korean bryozoan fauna, and Crisia spissus n. sp. is new to science. These species in this study are identified based on three features, which are its pseudopore, gonozooids and ooeciostomes. Two genera, Bicrisia and Nevianopora, are new to the Korean bryozoan fauna. As a result of this study, nine Korean cyclostomatous bryozoans in seven genera, five families are reported.

Two Species of the Genus Disporella (Bryozoa: Cyclostomata) from Korea

  • Hyun Sook Chae;Ho Jin Yang; Bum Sik Min;Ji Eun Seo
    • Animal Systematics, Evolution and Diversity
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    • v.39 no.1
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    • pp.22-26
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    • 2023
  • This paper describes two cyclostomatous bryozoans belonging to the genus Disporella Gray, 1848 found in Korean waters. This study was carried out with the materials which were collected from two localities, Jodo Island and Gapado Island, from 2014 to 2015. It is known that the genus Disporella Gray, 1848 needs a thorough revision and is difficult to identify because it has been documented in very few of the nominal species. Approximately 58 species have been recognized worldwide. One species, Disporella novaehollandiae (D'Orbigny, 1853), has been reported from Korean waters so far. Two species, D. pristis (MacGillivray, 1884) and D. wanganuiensis (Waters, 1887), distributed in the Indo-Pacific, are newly added to the Korean bryozoans fauna in this study. Accordingly, the Korean cyclostomatous bryozoans have increased to 17 species, ten genera and five families. Descriptions and illustrations of the two Disporella species using scanning electron microscopy are provided in this paper.

Three New Records of Family Tubuliporidae (Bryozoa: Cyclostomata) from Korea

  • Chae, Hyun Sook;Min, Bum Sik;Yang, Ho Jin;Seo, Ji Eun
    • Animal Systematics, Evolution and Diversity
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    • v.38 no.1
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    • pp.20-25
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    • 2022
  • This paper describes three cyclostomatous bryozoans belonging to the family Tubuliporidae Johnston, 1838 from Korean waters. It was carried out with the materials which were collected from three localities during the period from 2011 to 2017. As a result of the present study, three cyclostomatous bryozoans, Exidmonea intercalata Liu, Liu & Zágoršek, 2019, Qingdaoella conaria Liu, Liu & Zágoršek, 2019 and Tubulipora perforata Liu, Liu & Zágoršek, 2019 are newly added to the Korean bryozoan fauna. Furthermore, two genera, Exidmonea David, Mongereau & Pouyet, 1972 and Qingdaoella Liu, Liu & Zágoršek, 2019, are reported for the first time from Korea. These species were previously known only in Qingdao, China, which belongs to the temperate zone influenced by the Kuroshio Current. Descriptions and illustrations of the three cyclostomatous bryozoans using Scanning Electron Microscopy are provided in this study.

Cloning, Expression Analysis and Enzymatic Characterization of Cathepsin L from the Inshore Hagfish (Eptatretus burgeri) (먹장어 Cathepsin L의 분자생물학적 클로닝, 발현 및 효소학적 특성 분석)

  • JANG, Jin-Hyeon;SON, So-Hee;JO, Hyeon-Kyeong;CHUNG, Joon-Ki;LEE, Hyung-Ho
    • Journal of Fisheries and Marine Sciences Education
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    • v.28 no.4
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    • pp.903-912
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    • 2016
  • Hagfish which belongs to the chordate contact cyclostomata, is important phylogenetic relationship between vertebrate and invertebrate. Cathepsins of the cysteine protease family have traditionally been thought to play a major role in intracellular protein degradation and turnover in lysosomes. In this study, Catepsin L was cloned from Inshore hagfish (Eptatretus burgeri), the cDNA encoding ORF of the Eptatretus burgeri Cathepsin L (EbCtL) is 978 bp. The cDNA encoding proEbCtL was expressed in Escherichia coli strain BL21(DE3) using the pGEX-4T-1 expression vector system. The recombinant proEbCtL protein was overexpressed as a approximately 55 kDa fusion protein. The overproduced soluble GST-fusion protein was then applied to glutathione-Sepharose 4B column chromatography; the sample harboring the fusion protein evidenced a high degree of purity when analyzed via SDS-PAGE and Western blot analysis. Its activity was quantied by cleaving the synthetic peptide Z-FR-AMC, Z-LLE-AMC, and Suc-AAF-AMC, and the optimal pH for the protease activity was 8, 9.5, and 9, respectively.