• Title/Summary/Keyword: Marine Bryozoans

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Marine Bryozoans from Geojedo Island in Korea (거제도의 해산 태형동물)

  • Ji Eng Seo
    • Animal Systematics, Evolution and Diversity
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    • v.14 no.3
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    • pp.207-217
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    • 1998
  • Twenty nin species of marine bryozoans are reported from Geojedo Island, Korea. Of these, two species, Chaperia acanthina and Antropora tincta are new to Korea fauna, Only two species, Amathia distans and Tricellaria occidentails, included in this paper, were previously recorded from Geojedo Island. Therefore twenty five species of marine bryozoans is newly recorded from Geojedo Island.

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Fouling Bryozoa of Korean Ports and Harbours

  • Chae, Hyun Sook;Seo, Ji Eun
    • Animal Systematics, Evolution and Diversity
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    • v.35 no.4
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    • pp.204-217
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    • 2019
  • This study aims to investigate the fouling bryozoans which attach to artificial structures of Korean ports and harbours. The materials have been collected from 56 sites during the period from 2008 to 2012. As a result of the present study, 40 species of fouling bryozoans were identified. The most abundant species are Bugula neritina (Linnaeus, 1758), Tricellaria occidentalis (Trask, 1857), Watersipora subtoquata (d'Orbigny, 1852), and Cryptosula pallasiana (Moll, 1803). Three species, Flustrellidra armata Grischenko, Seo and Min, 2010, Cauloramphus korensis Seo, 2001, and Parasmittina contraria Seo, 1993 are endemic to Korea. A total of 70 species of fouling bryozoans have been reported in Korea with 16 new bryozoans resulting from this study.

Three new records of Korean cyclostomatous bryozoans

  • yun Sook Chae;Ho Jin Yang;Bum Sik Min;Ji Eun Seo
    • Journal of Species Research
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    • v.12 no.4
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    • pp.362-367
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    • 2023
  • Three cyclostomatous bryozoans from Korea belonging to the genera Bicrisia and Nevianipora are described here for the first time. The specimens collected from six localities of the South Sea and Jejudo Island during the period from 1981 to 2020 were observed. The three cyclostomatous bryozoans are Nevianipora pulcherrimoidea (Liu in Liu, Yin & Ma, 2001), N. rugatata (Liu in Liu, Yin & Ma, 2001), and Bicrisia edwardsiana (d'Orbigny, 1841). Nevianipora pulcherrimoidea and N. rugatata were previously found only from the South China Sea, whereas Bicrisia edwardsiana is widespread. As a result of this study, the Korean cyclostomatous bryozoans have increased to 20 species, 10 genera, and five families. Redescriptions and illustrations by scanning electron microscopy of the three species new to the Korean fauna are provided herein.

Three newly recorded species of Korean fouling bryozoans

  • Chae, Hyun Sook;Yang, Ho Jin;Min, Bum Sik;Noh, Geon Woo;Lee, Dong Hee;Seo, Ji Eun
    • Journal of Species Research
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    • v.11 no.3
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    • pp.180-187
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    • 2022
  • We found three fouling bryozoans from the materials collected from seven localities (ports, yacht marina, intertidal and subtidal zones) in the coastal seas of South Korea from 2003 to 2021. These three species, Thalamoporella californica (Levinsen, 1909), Scruparia ambigua (d'Orbigny, 1841), and Tricellaria inopinata d'Hondt and Occhipinti Ambrogi, 1985, and one genus Scruparia Oken, 1815 are newly added to the Korean bryozoan fauna. Of the three species, Scruparia ambigua and Tricellaria inopinata are cosmopolitan or widespread, and Thalamoporella californica is from the East Pacific Ocean in tropical/temperate water. It seems that some of the previously reported T. occidentalis in Korea have a high probability of being T. inopinata. In this study, some Tricellaria occidentalis reported by Seo (2005) are synonymized into T. inopinata. A total of 77 species of fouling bryozoans has been reported in Korea, with three new bryozoans resulting from this study. Descriptions and illustrations of the three fouling bryozoans using scanning electron microscopy are provided in this study.

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.

A Systematic Study on the Marine Bryozoans in Korea 7. Suborder Anasca (한국산 해산 태충류의 계통분류학적 연구 7. 무낭아목)

  • 노분조;서지은
    • Animal Systematics, Evolution and Diversity
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    • v.6 no.1
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    • pp.145-160
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    • 1990
  • As a result of the systematic study on the marine anascan bryozoans in Korea, a total of 27 species were identified and the following seven species were new to Korean fauna ; Membranipora perfragilis, Membranipora serrilamella, Terminoflustra sagamiensis, Callopora lineata, Thalamoperella rozieri, Canda retriformis and Amastigia xishaensis.

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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.

First Fossil Bryozoans from Korea (Seogwipo Formation, Jejudo)

  • Kamil Zagorsek;Hyun Sook Chae;Ho Jin Yang;Geon Woo Noh;Ji Eun Seo
    • Animal Systematics, Evolution and Diversity
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    • v.40 no.1
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    • pp.47-67
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    • 2024
  • The bryozoan assemblage from Seogwipo Formation in Jejudo yielded 33 taxa, including seven cyclostomes and 26 cheilostomes. It is the first fossil bryozoans described from the entire Korean peninsula. Five species, Callopora inermis, Tegella horrida, Celleporaria reflexa, Porella rotundirostris, and Rhynchozoon obliquimandibulatum, are new to the Korean bryozoan fauna as both in the Recent and fossil records. Tegella horrida, Celleporella reflexa, Porella donoghueorum, and Leischara subgracilis are notably cold-water species. This suggests that the Seogwipo Formation was primarily deposited in shallow water environment, subject to changesinfluenced by warm-water masses and temporarily impacted by cold currents. Only 33 species from the Seogwipo Formation in Korea, are very poor because the Seogwipo Formation is the only Pleistocene marine deposit in the Korean Peninsula. Eight species previously unknown as fossils worldwide, Tubulipora perforata, Puellina paracaesia, Reginella multipora, Celleporella reflexa, Exochella cryptodontia, Suhius cf. rubescentis, Cheiloporina cf. haddoni, and Jodoella koreensis are found in the Seogwipo Formation. This study is meaningful as it reports the first fossil assemblage of bryozoans from the Korean peninsula.

Taxonomy of the Marine Bryozoans from Namhaedo Island and Its Adjacent Waters, Korea (한국 남해도 해역의 태형동물에 관한 분류)

  • Ji Eun Seo
    • Animal Systematics, Evolution and Diversity
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    • v.14 no.4
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    • pp.415-424
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    • 1998
  • Twently seven speices of marine bryozoans from Namhaedo Island and its adjacent waters were identified. Among them, Hippothoa distans is new to Korean fauna and seven species are added as new to Namhaedo Island fauna. Twenty three species of them have been found also in Chejudo Island waters, which is affected by the Tsushima Current. Ten species have been found in the East Sea which is affected by both the Tsushima Warm Current and the North Korea Cold Current. So it is clear that the Namhaedo Island sea area is influenced by both the Tsushima Warm Current and the North Korea Cold Current.

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Gymnolaemate Bryozoans in Fresh and Brackish Water of South Korea: Occurrence, Taxonomical Remarks and Zoogeographical Implications

  • Jung, Kyoung Jin;Woss, Emmy R.;Chae, Hyun Sook;Seo, Ji Eun
    • Animal Systematics, Evolution and Diversity
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    • v.33 no.1
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    • pp.37-44
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    • 2017
  • The present census on freshwater bryozoans in the Han River, Geum River and in lentic water bodies in Gangwon Province revealed three gymnolaemate species. Two of them-Hislopia prolixa Hirose and Mawatari, 2011 and Victorella pavida Saville Kent, 1870 were recorded for the first time from South Korea. Paludicella articulata (Ehrenberg, 1831), on the other hand, had already been documented from a few sites since 1941. The bryozoans, all belonging to the order of Ctenostomata, were found on a variety of substrates in freshwater (H. prolixa and P. articulata) and brackish habitats (V. pavida). Hislopia prolixa had recently been established as a new species and this is the first record for an occurrence outside of Japan, where it had been newly described from Lake Biwa and nearby satellite lakes.