• Title/Summary/Keyword: hydroids

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Marine Hydroids(Cnidaria: Hydrozoa: Hydroida) from Cheju Island, Korea (제주도 해산 히드라충류(자포동물 문: 히드라충 강: 히드라충 목))

  • 박정희
    • Animal Systematics, Evolution and Diversity
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    • v.9 no.2
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    • pp.261-280
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    • 1993
  • The marine hydroids of Cheju Island in this work identified into 46 species and/or subspecies of 25 genera in 10 families. Of which four species: Rhizocaulus chinensis, Obelia bicuspidata, Sertularia desmoides and Plumularia spinulosa are new to the hydroid fauna of Cheju Island and four species: Hebella parastica, Campanularia groenlandica, Campanularia everta and Sertulareffa natalensis are new to the Korean fauna. Adding these eight species to the previous known species (83 species and/or subspecies) in Cheju Island, the hydroid fauna in Cheju Island identified up to date consists of 91 species and/or subspecies of 41 genera in 12 families. Macrorhynchia phoenicea is dominant species which occur in 10 points, Aglaophenia suensonii in eight points. 71 species (78%) occur in Songsanp'o, 43 species (47%) in Munsom, 26 species (29%) in Supsom, 13 species (14%) in Wimi-ri and 11 species (12%) in P - omsom in order. Thirty-three percent (30 species) of the hydroids of Cheju Island was only found in Cheju Island.

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Hydroids (Cnidaria, Hydrozoa) of Dokdo Islands, Korea (독도산 히드라충류(자포동물문, 히드라충강)의 분류)

  • 박정희;송준임
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.1
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    • pp.55-63
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    • 2000
  • As a part of ecological survey of Dokdo Islands, Korea the hydroid collections were made in its intertidal and subtidal zones by the one of present authors and others during the periods from March 1993 to May 1999. The specimens were identified into 15 species of 11 families (Corymorphidae, Corynidae, Eudendriidae, Solanderiidae, Boungainvilliidae Tubulariidae, Lafoeidae, Haleciidae, Campanulariidae, Sertulariidae and Pulmulariidae) in two orders (Athecatae and Thecatae). Two species of them, Fukaurahydra anthoformis (Corymorphidae) and Rhizorhagium sagamiense (Bougainvilliidae) were turned out to be new to the Korean fauna.

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Three New Records of Thecate Hydroids from Korean Waters (한국미기록 컵히드라충류 3종)

  • Jung Hee Park
    • Animal Systematics, Evolution and Diversity
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    • v.14 no.1
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    • pp.59-66
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    • 1998
  • Obelia tottoni(Leloup, 1935), Sertularella polyzonias(Linnaeus, 1758) and Symplectoscyphus turgidus(Trak, 1857) of the identified thecate hydroid speces from Anmyondo, Kojedo and Chejudo were turned out to be new to the Korean fauna. Up to date the Korean thecate hydroid fauna consists of six subspecies and 109 species in eight families.

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Life History of Obelia bicuspidata Clarke, 1875(Hydrozoa, Campanulariidae)in Korea (한국산 쌍뾰족혹히드라(히드라충강, 종히드라과)의 생활사)

  • Lee, Woo-Jin;Park, Jung-Hee
    • Animal Systematics, Evolution and Diversity
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    • v.17 no.2
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    • pp.171-177
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    • 2001
  • The life history of Obelia bicuspidata Clarke, 1975 (Hydrozoa, Campanulariidae) was studied in its habitats, Jak-yk Island, Korea and in the laboratory It grows mainly attaching to the under sides of small rocks immersed in muddy shores, or the shade surfaces of oyster shells. The hydoids liberate medusae. The medusa buds develope twice per year, during from March to June and from September to October The optimum water temperature for the hydroids is between 4$^{\circ}C$ and 8$^{\circ}C$ and at the temperature above 9$^{\circ}C$ the hydroids begin to degenerate. In August the surface water temperature is around $25^{\circ}C$ and the hydrothecae are all disappeared. The hydroids grow best during from February to May. The medusae are small, 0.3 mm high, 0.45 mm wide and require about 9 days at room temperature (about 2$0^{\circ}C$) for mature after releasing. Obelia bicuspidata turned out to be boreal species in this work.

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Three Hydroids (Cnidaria : Hydroida) from Ullngdo and Chejudo , Korea (울릉도와 제주도의 3 히드라충류 (자포동물류 : 히드라충류))

  • 박정희
    • Animal Systematics, Evolution and Diversity
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    • v.4 no.1
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    • pp.57-66
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    • 1988
  • 한국 해산 히드라충류의 분류학적 연구의 일환으로 1973년부터 1987년까지 울릉도와 제주도에서 채집되어 이화여자대학교 자연과학대학 생물학과에 보관되어 있는 미동정 표본들을 동정 분류하였다. 그 결과 Cryptolaria pectinata (Allman, 1888), Modeeria rotunda (Quoy & Gaimard, 1817) 그리고 Thecocarpus myriophyllum orientalis Billard, 1908 가 한국 미기록종으로 밝혀졌다.

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Systematic Study on the Marine Hyroids (Cnidaria , Hydrozoa) in Korea I (한국 해산 히드라충류 (자포동물 문, 히드라충강 )의 계통분류학적 연구 I)

  • 박정희
    • Animal Systematics, Evolution and Diversity
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    • v.6 no.1
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    • pp.71-86
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    • 1990
  • 1969년 5월부터 1989년 6월까지 한국의 본토 연안과 도서지방, 28개 지역에서 채집되어 미동정 상태로 보관되어 있는 히드라충류의 표본들 가운데 일부를 관찰한 결과 13과에 속하는 50종 및 아종이 밝혀졌다. 이중에서 5종, Turritopsis nutricula, Halecium beanii, Halecium pusillum , Sertularella gigantea and Halopteris constricta는 한국미기록종으로 판명되었다. 한국산 기지종에 대해서는 기지 채집지를 인용하였으며 , 아울러 새로운 채집지를 추가하였다.

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New Record of a Aglaophenian Species (Hydrozoa: Thecatae: Plumulariidae) from Korea

  • Park, Jung-Hee
    • Animal Systematics, Evolution and Diversity
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    • v.28 no.2
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    • pp.145-147
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    • 2012
  • The hydroid specimens for this study were collected by SCUBA diving from about 15 m deep at the Isl. Marado, Jeju-do, Korea. Among the identified species $Aglaophenia$ $latecarinata$ Allman, 1877 was shown to be new to the Korean fauna. This species belongs to the family Plumulariidae which is the second large hydroid taxon in Korea. The distinct morphological characteristic of this species is the nine marginal teeth of hydrotheca, one median abcauline and four pairs laterals. Median abcauline tooth is bifid, with a broad keel extending along the front of the hydrotheca from its margin to the mesial inferior nematotheca, from which the species name was originated. Up to date four aglaophenian species of 35 plumularians have been reported from Korea.