• Title/Summary/Keyword: scyphomedusae

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First Record of Two Scyphomedusae (Cnidaria, Scyphozoa) in Korea (한국산 해파리(자포동물문, 해파리강) 2미기록종)

  • 박정희
    • Animal Systematics, Evolution and Diversity
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    • v.16 no.1
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    • pp.79-85
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    • 2000
  • Some scyphomedusae were collected from the coasts of Busan (Gijang), Geojedo Island(Jangmok-ri) and Samcheok during the period from June 1989 to May 1999. They were identified into Stenoscyphus inabai of Stauromedusae and Aurelia aurita in Semaeostomeae. They are first recorded in Korea.

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Three New Records of Scyphomedusae (Cnidaria: Scyphozoa) in Korea

  • Park, Jung-Hee;Chang, Soo-Jung
    • Animal Systematics, Evolution and Diversity
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    • v.22 no.1
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    • pp.57-62
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    • 2006
  • Some scyphomedusae were collected from the coasts of Ilgwang, Jeju Harbour, Yeosu, Yokjido Is. and Munyeodo Is. in Korea from May to Nov. 2004. They were indentified into Pelagia noctiluca Forskal, 1775 and Cyanea nozakii Kishinouye, 1891 of the order Semaeostomeae and Nemopilema nomurai Kishinouye, 1922 of the order Rhizostomeae in the class Scyphozoa. They are new to the Korean fauna.

First Record of Two Cold-Water Jellyfishes Aurelia limbata and Parumbrosa polylobata (Scyphozoa: Semaeostomeae: Ulmaridae) in Korean Coastal Waters

  • Chang, Soo-Jung;Kim, Jung Nyun;Yoon, Won-Duk;Ki, Jang-Seu
    • Animal Systematics, Evolution and Diversity
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    • v.32 no.4
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    • pp.272-280
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    • 2016
  • Most scyphomedusae jellyfishes recorded in Korean waters are temperate and subtropical species. In the present study, two cold-water jellyfishes from Korean waters are first described. Scyphomedusae were collected from the coasts of Gangneung and Ulsan of the East Sea, and Boryeong, and the eastern area of the Yellow Sea from June 2006 to May 2015. Scyphomedusae collected in Ulsan and Gangneung were identified morphologically as Aurelia limbata Brandt, 1835. Their umbrella was 250-500 mm in width and 30-50 mm in height; the exumbrella was white and the subumbrella was dark brown in color. The vascular system was complex with anastomosed branches. Individuals of this species lived at about 6.6-9.9℃ and 30-50 m depth in Korean waters. Scyphomedusae collected from the center of the Yellow Sea and from Boryeong were identified as Parumbrosa polylobata Kishinouye, 1910. Their umbrella was disc-shaped, 80-200 mm in width and 20-40 mm in height. Its milky white gonads could be seen through the transparent exumbrella. The stomach cavity was round and flat with four interradial cavities connected by subgenital cavities, and the four oral arms were bifurcated and spear-head shaped. Individuals were found at about 6.4-10.0℃ and 40-90 m depth in Korean waters. The identities of both species were confirmed by molecular analysis using nuclear ribosomal DNA sequences.

First Record of Rhopilema esculentum (Scyphozoa, Rhizostomae), Edible Jellyfish in Korea

  • Ullah, Mohammad Saeed;Min, Gi-Sik;Dong, Jing;Yoon, Won Duk;Choi, Joong Ki
    • Ocean and Polar Research
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    • v.37 no.4
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    • pp.287-293
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    • 2015
  • A species of edible Scyphomedusae jellyfish has been used as food by the local people in Ganghwado, Korea since the 1990s. In order to identify this jellyfish, we collected specimens in Ganghwado during September 2013, and compared these specimens with original descriptions made by Kishinouye (1890). Mitochondrial cytochrome oxidase subunit 1 (CO1) sequences of these specimens were compared with those of Rhopilema esculentum retrieved from GenBank. Our specimens were also compared with jellyfish collected in China, previously confirmed as R. esculentum, based on morphological characters and DNA sequences. Using these two methods, the jellyfish specimens caught in Ganghwado were correctly identified as R. esculentum, a species new to Korean waters. This edible jellyfish has been named 'Gisusik-Yonghaepari' as Korean name.

Two New Records of Siphonophora(Hydrozoa) and Semaeostomeae(Scyphozoa) in Korea (관해파리목(히드라충강)과 기구해파리목(해파리강)의 한국 미기록 2종)

  • Park, Jung-Hee
    • Animal Systematics, Evolution and Diversity
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    • v.18 no.1
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    • pp.53-58
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    • 2002
  • Some siphonophores and scyphomedusae were collected from the coasts of Hoopo(Sea of Japan) and Geojedo Island, Changson(Korea Strait) in Korea respectively. They identified into Porpita umbella O. F. Muller, 1776 of the order Siphonophora in the Hydrozoa and Dactylometra quinquecirrha L. Agassiz, 1862 of the Semaeostomeae in the Scyphozoa. P. umbella looks like a bule button. It's chitinous float is light brown and the other body protions are turquoise blue. D. quinquecirrha has four long curtain-like oral lobes which are highly flexible and ornamented with numerous nematocyst warts, and 32 radiating reddish brown stripes upon exumbrella. The Siphonophora is reported for the first time and three scyphomedusae are reported in Korea so far.

Re-description of Chrysaora pacifica (Goette, 1886) (Cnidaria, Scyphozoa) from Korean Coastal Waters: Morphology and Molecular Comparisons

  • Lee, Hye Eun;Yoon, Won Duk;Chae, Jinho;Ki, Jang-Seu
    • Ocean and Polar Research
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    • v.38 no.4
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    • pp.295-301
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    • 2016
  • The nomenclature of the sea nettle jellyfish from Korea was initially described as Dactylometra quinquecirrha Agassiz, 1862. However its identity has been questioned on the basis of its local distribution and molecular data. Here, we examined morphology and DNA sequences of nuclear rDNA using specimens collected from southern Korean waters in August 2014. Based on morphological characteristics (bell size, umbrella pattern, number of tentacles and lappets) and distribution locality, we reassign the Korean D. quinquecirrha to Chrysaora pacifica (Goette, 1886), and provide a re-description accordingly. The molecular identity of C. pacifica was further confirmed by comparison of nuclear ribosomal DNA sequences.

Multitrophic Interactions as a trigger of the Gyrodinium aureolum Bloom in Reeves Bay, New York (미국 뉴욕 Reeves만에서 쌍편모조류인 Gyrodinium aureolum의 대발생에 영향을 미친 먹이연쇄내의 상호작용)

  • Kim, Woong-Seo;Chang, Man;Shim, Jae-Hyung
    • 한국해양학회지
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    • v.27 no.4
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    • pp.268-276
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    • 1992
  • Multitrophic interactions among gelatinous planktivores, zooplankton, and phytoplankton were in vestigated in Reeves Bay. New York from mid-March to July in 1989 to evaluate the top-down effect by gelatinous macrozooplankton on the Gyrodinium aureolum bloom through cascading tropic interactions. Zooplankton abundances reached maximal density following a decrease in gelatinous macrozooplankton (hydromedusae and scyphomedusae) abundances, and phytoplankton biomass was low at this time. Subsequently, as ctenophore populations increased zooplankton abundances decreased sharply, and the cell concnetration of G. aureolum began to increase. This field observation supports that the top-down control by gelatinous macrozooplankton on grazers, resulting in low grazing pressure on phytoplankton, can cause an algal bloom. The minimal zooplankton grazing measured using /SUP 14/C tracer technique during the bloom period indicated that zooplankton did not prefer G. aureolum as a good source.

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