• Title/Summary/Keyword: Urochordata

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Taxonomic Study of Family Doliolidae (Urochordata: Thaliacea: Doliolida) from Korea

  • Kim, Sun-Woo;Lee, Jea-Hyun;Kim, Chang-Bae
    • Animal Systematics, Evolution and Diversity
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    • v.26 no.1
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    • pp.11-14
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    • 2010
  • Four species in two genera of the family Doliolidae are identified and re-described in Korean waters: Doliolum denticulatum Quoy and Gaimard, 1834, Doliolum nationalis Borgert, 1894, Dolioletta gegenbauri (Uljanin, 1884), and Dolioletta tritonis (Herdman, 1888). Dolioletta gegenbauri is newly recorded in Korean fauna. A key to species of the family Doliolidae in Korea is provided.

A New Record of Ihlea punctata and Redescription of Salpa fusiformis (Salpida: Salpidae) in Korean Waters

  • Kim, Sun-Woo;Won, Jung-Hye;Lee, Jae-Hyun;Kim, Chang-Bae
    • Animal Systematics, Evolution and Diversity
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    • v.26 no.3
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    • pp.353-356
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    • 2010
  • Two species in two genera of the family Salpidae were identified in Korean waters: Ihlea punctata (Forskal, 1775) and Salpa fusiformis Cuvier, 1804. I. punctata is a newly reported species in Korean fauna, while S. fusiformis is redescribed with unrecorded solitary zooid stage.

Taxonomic Study of the Genus Thalia (Thaliacea: Salpida: Salpidae) from Korea

  • Kim, Sun-Woo;Won, Jung-Hye;Kim, Chang-Bae
    • Animal Systematics, Evolution and Diversity
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    • v.27 no.2
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    • pp.142-150
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    • 2011
  • Five species in the genus Thalia of the family Salpidae are described: Thalia cicar van Soest, 1973, Thalia democratica (Forskal, 1775), Thalia orientalis Tokioka, 1937, Thalia rhomboides (Quoy and Gaimard, 1824), and Thalia sibogae van Soest, 1973. All of these species are new to the Korean fauna. A key to the Korean Thalia species is provided.

Seasonal Variation of Species Composition in Marine Organisms at Oryukdo in the Southeastern waters off Korea (오륙도 주변해역 해양생물의 종조성과 계절변동)

  • Kim, Jung-Yun;Kim, Jung-Nyun;Choi, Jung-Hwa
    • Journal of Fisheries and Marine Sciences Education
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    • v.24 no.6
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    • pp.781-792
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    • 2012
  • Seasonal variation of species composition in marine organisms around Oryukdo of Busan was investigated using a gill net between 2009 and 2011. A total of 82 species, 52 families, and 6 taxa were collected during the sampling periods. Species were included two species in Cnidaria, one in Urochordata, 12 in Mollusca, 12 in Crustacea, seven in Echinodermata, and 48 in Pisces. The dominant species were Crepidula onyx, Asterina pectinifera, Ceratostoma burnetti, Asterias amurensis, Anthocidaris crassispina, and Trachurus japonicus. These six species accounted for 48.4% in the total number. Diversity indices were highest in spring 2009 (2.77) and lowest in spring 2011 (1.66). Seasonal variation of species composition and abundance in marine organisms corresponded with the water temperature.

Evaluation of ${\mu}$-Calpain Inhibitory Activity of Korean Indigenous Marine Organism Extracts

  • Lee, Yoo-Jin;Lee, Eun-Young;Han, Ah-Reum;Song, Jun-Im;Kwon, Young-Joo;Seo, Eun-Kyoung
    • Natural Product Sciences
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    • v.18 no.2
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    • pp.102-105
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    • 2012
  • Marine organism extracts were prepared from 26 species of Korean indigenous marine organisms, including 25 species belonging in class Anthozoa of phylum Cnidaria and a species belonging to subphylum Urochordata of phylum Chordata, and screened their inhibitory effects against ${\mu}$-calpain. As a result, the thirteen extracts were found to be active in the criteria of $IC_{50}$ < 100 ${\mu}g/ml$. Among them, the MeOH extracts of Plexauroides praelonga and Alveopora japonica showed remarkable ${\mu}$-calpain inhibitory activity with $IC_{50}$ values of $4.62{\pm}0.22$ and $4.82{\pm}0.07{\mu}g/ml$, respectively. In addition, chemical investigation of A. japonica led to the isolation of an active compound, hexadecyl tetradecanoate, as a selective cathepsin B inhibitor ($IC_{50}=9.05{\pm}2.45{\mu}M$). This compound was isolated as constituent of A. japonica for the first time in the present study.