• Title/Summary/Keyword: n. sp.

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한국산 담수 어류에 기생하는 요각류 (Copepod Parasites (Crustacea) of Freshwater Fishes in Korea)

  • Il-Hoi Kim;Soon-Kyoo Choi
    • Animal Systematics, Evolution and Diversity
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    • 제19권1호
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    • pp.57-93
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    • 2003
  • 17종의 한국산 담수 어류로부터 5속 12종의 기생성 요각류가 발견되었다. 이들은 피라미낫벌레 (Ergasilus coniforemis n. sp.). 배불뚝낫벌레 (Ergasilus ventriosus n. sp.), 장구머리낫벌레 (E.briani Markewitsch). 쏘가리낫벌레 (E.peregrinus Heller). 풍선신낫벌레 (Neoergasilus inflatus Yin), 일본신낫벌레 [Neoergasilus japonicus (Harada)], 큰가시신낫벌레 (N. longispinosus Yin), 뚱보신낫벌레 (N. builatus n. sp.), 흘쭉신낫벌레 (N. angustus n. sp.), 키다리중국낫벌레 [Csinergasiius undujatus (Markewitsch)]. 닷벌레 (Lernaea cyprinacea L.), 중국민물아가미붙게 (Lamproglena chinensis Yu)이다. 일본 신낫벌레는 한국에서 가장 흔한 담수어류 기생성 갑각류로서 10종의 담수어류에 기생하는 것이 발견되었다. 또한, 피라미는 한국에서 가장 다양한 갑각류가 기생하는 숙주로서, 7종의 요각류가 이 어류에 기생하는 것이 발견되었다. 발견된 기생성 갑각류 중에서 신종과 한국 미기록종을 기재하였다. 과거에 기재가 불완전하게 이루어진 중국민물아가미붙게도 재기재하였다.

A New Genus and Two New Species of Copepoda(Poecilostomatoida, Sabelliphilidae) Associated with the Tubicolous Polychaetes in the Yellow Sea

  • Hoi, I-I
    • Animal cells and systems
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    • 제5권1호
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    • pp.1-9
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    • 2001
  • Terebelliphilus simplex n. gen., n. sp. and Myxomolgus invulgus n. sp. are described from the tubicolous polychaetes found in the intertidal shores in the Yellow Sea. The new genus Terebelliphilus belongs to the family Sabelliphilidae but is characteristic in bearing the reduced segmentations In legs 1-4, an unusual sexual dimorphism in antennule, and the ventral location of genital areas. Myxomolgus invulgus is readily distinguishable from its congeners by the morphological features of rostrum, antennule, mandible, maxilla, leg 4 and female leg 5.

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Four New Species of the Genera Masirana and Longileptoneta (Araneae, Leptonetidae) from Korea

  • Seo, Bo Keun
    • 환경생물
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    • 제33권3호
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    • pp.306-313
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    • 2015
  • Four new species of the genera Masirana Komatsu, 1942 and Longileptoneta n. gen. (Araneae, Leptonetidae) are described from Gyeongsangbuk-do and Chungcheongbuk-do, Korea, under the names Longileptoneta songniensis n. sp., Masirana bonghwaensis n. sp., M. ilweolensis n. sp., and M. flabelli n. sp. A new genus, Longileptoneta n. gen., is also described.

참전복 치패에 대한 부착성 규조류의 먹이효율 (Dietary Value of Benthic Diatoms for Newly Settled Abalone, Haliotis discus hannai Ino)

  • 한형균;허성범
    • 한국양식학회지
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    • 제13권2호
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    • pp.153-161
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    • 2000
  • 10종의 부착성 규조류를 대상으로 참전복 치패의 먹이효율을 조사하였다. 유생의 부착율을 실험 1에서 Rhaphoneis sp.가 31.6%, 실험 2에서는 P. tricornutum가 16.4%로 가장 높았다. 부착성 규조류를 먹이로 한 치패의 생존율은 실험1에서 Raphoneis sp.가 62.7%로 가장 높았고, N. incerta, C. schroderi, N. closterium 는 각각 56.8%, 55.2%, 54.3%로 비교적 높았으며, Navicula sp. (B-38)는 30.5%로 가장 낮았다. 그리고 실험 2와 3에서는 C. schroderi, N. incerta, P. tricornutum 및 Raphoneis sp.는 높은 생존율을 보였으며, 특히 C. schroderi는 67.6%, 49.4%로 가장 높았다. 반면, H. marina (40.4%, 15.7%), Nitzschia sp. (39.1%, 27.1%), N. closterium (35.2%, 18.0%)은 비교적 낮았다. 치패의 성장에 있어서 일간성장량은 부착율과 생존율이 높았던 C. schroderi에서 최고 83.3 ${\mu}$m로 가장 높았고, 생존율이 낮았던 H. marina와 N. closterium은 19.9~38.7 ${\mu}$m로 가장 낮은 일간성장량을 보였다.

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한국산 강도래류 3과(넓은가슴강도래과, 그물강도래과, 강도래과)에 관한 분류학적 연구 (Taxonomic Study on Three Families (Peltoperlidae, Perlodidae, Perlidae) of Stoneflies (Plecoptera) in Korea)

  • Chul ho Ra;Jong Sun Kim;Yang Won Kang;Soon Ah Ham
    • Animal Systematics, Evolution and Diversity
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    • 제10권1호
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    • pp.1-15
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    • 1994
  • 한국산 강도래목(Plecoptera) 3과 (Peltoperlidae, Perlodidae, Perlidae)의 성충, 유충, 난을 대상으로 분류학적 연구를 실시한 결과 총 3과 8속 8종으로 나타났다. 이 중 Perlodes stigmata n. sp., Kamimuria coreana n. sp., Neoperla coreensis n. sp., 3종이 신종으로 밝혀져 도판을 작성하고 기재하였다.

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Two New Marine Sponges of the Genus Halichondria (Halichondrida: Halichondriidae) from Uljin, Korea

  • Kang, Dong-Won;Sim, Chung-Ja
    • Animal Systematics, Evolution and Diversity
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    • 제27권1호
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    • pp.19-23
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    • 2011
  • Two new marine sponges, Halichondria jangseungenesis n. sp. and H. nagokenesis n. sp., of the family Halichondriidae, were collected from Uljin-gun, Gyeongsangbuk-do, Korea by SCUBA diving during the period from Apr 2007 to Aug 2007. Based on their spicule composition and skeletal structure, H. jangseungenesis n. sp. appears to have a close similarity with H. panicea (Pallas, 1766); however, they differ in length of spicule. The spicule length of oxea of H. jangseungenesis n. sp. is shorter than that of H. panicea. Based on their spicule composition and growth form, H. nagokenesis n. sp. is quite similar to H. cylindrata Tanita and Hoshino, 1989; however, but they differ in length of spicule. The spicule length of oxea of H. nagokenesis n. sp. is longer than that of H. cylindrata.

한국 모래해면 속 (망각해면 목: 가는실해면 과)의 2신종 (New Species of Two Psammocinia Horny Sponges (Dictyoceratida: Irciniidae) from Korea)

  • Chung Ja Sim;Kyung Jin Lee
    • Animal Systematics, Evolution and Diversity
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    • 제14권4호
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    • pp.335-340
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    • 1998
  • 한국의 남해에서 채집된 모래해면 속의 2신종, 삼양모래해면(Psammocinia samyangensis n. sp.)과 완도모래해면 (P. wandoensis n. sp.)을 명명하고 기재하였다. 완도모래해면은 호주의 P. rugosa(Lendenfeld, 1889)와 외형에서 많이 유사하지만 filaments에서 차이를 나타내며, 삼양모래해면은 제주모래해면(P. jejuensis)과 유사하나 섬유의 형태에서 차이를 나타낸다.

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S-CURVATURE AND GEODESIC ORBIT PROPERTY OF INVARIANT (α1, α2)-METRICS ON SPHERES

  • Huihui, An;Zaili, Yan;Shaoxiang, Zhang
    • 대한수학회보
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    • 제60권1호
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    • pp.33-46
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    • 2023
  • Geodesic orbit spaces are homogeneous Finsler spaces whose geodesics are all orbits of one-parameter subgroups of isometries. Such Finsler spaces have vanishing S-curvature and hold the Bishop-Gromov volume comparison theorem. In this paper, we obtain a complete description of invariant (α1, α2)-metrics on spheres with vanishing S-curvature. Also, we give a description of invariant geodesic orbit (α1, α2)-metrics on spheres. We mainly show that a Sp(n + 1)-invariant (α1, α2)-metric on S4n+3 = Sp(n + 1)/Sp(n) is geodesic orbit with respect to Sp(n + 1) if and only if it is Sp(n + 1)Sp(1)-invariant. As an interesting consequence, we find infinitely many Finsler spheres with vanishing S-curvature which are not geodesic orbit spaces.

한국산 육산 달팽이 5 신종 및 3 신아종 (New Land Snails in Korea)

  • 권오길;이준상
    • 한국패류학회지
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    • 제7권1호
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    • pp.1-11
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    • 1991
  • Authors describe here five new species and three new subspecies of Korean Iand snail fauna. They are collected from the southern part of Korea including Ullungdo and Chejudo. The generic names of these new species and subspecies were discribed in the [ Il-lustrated Encyclopedia of fauna & flora of Korea V ol.32 Mollusca(I)]. The newly recorded species and subspecies are as follows:Genus Diplommatina Benson, 1849 Subgenus Sinica Mollendorff, 1885 Diplommatina(Sinica) paxillus changensis n. subsp. Diplommatina(Sinica) chejuensis n. sp.Genus Arinia H. & A. Adams, 1856 Arinia chejuensis n. sp.Authors describe here five new species and three new subspecies of Korean Iand snail fauna. They are collected from the southern part of Korea including Ullungdo and Chejudo. The generic names of these new species and subspecies were discribed in the [ Il-lustrated Encyclopedia of fauna & flora of Korea V ol.32 Mollusca(I)]. The newly recorded species and subspecies are as follows:Genus Diplommatina Benson, 1849 Subgenus Sinica Mollendorff, 1885 Diplommatina(Sinica) paxillus changensis n. subsp. Diplommatina(Sinica) chejuensis n. sp.Genus Cavernacmella Habe, 1942 cavernacmella coreana n. sp.Authors describe here five new species and three new subspecies of Korean Iand snail fauna. They are collected from the southern part of Korea including Ullungdo and Chejudo. The generic names of these new species and subspecies were discribed in the [ Il-lustrated Encyclopedia of fauna & flora of Korea V ol.32 Mollusca(I)]. The newly recorded species and subspecies are as follows:Genus Diplommatina Benson, 1849 Subgenus Sinica Mollendorff, 1885 Diplommatina(Sinica) paxillus changensis n. subsp. Diplommatina(Sinica) chejuensis n. sp.Genus Mirus Albers, 1850 Mirus junensis n. sp.Genus Paganizaptyx Kuroda, 1945 Paganizaptyx miyanagai ullungdoensis. subsp.Authors describe here five new species and three new subspecies of Korean Iand snail fauna. They are collected from the southern part of Korea including Ullungdo and Chejudo. The generic names of these new species and subspecies were discribed in the [ Il-lustrated Encyclopedia of fauna & flora of Korea V ol.32 Mollusca(I)]. The newly recorded species and subspecies are as follows:Genus Diplommatina Benson, 1849 Subgenus Sinica Mollendorff, 1885 Diplommatina(Sinica) paxillus changensis n. subsp. Diplommatina(Sinica) chejuensis n. sp.Genus Ratinella Shuttleworth, 1877 Retinella radiatula coreana n. subsp.Genus Sitalina Thiele, 1931 Sitalina chejuensis n. sp.

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삼음교 지압에 따른 산부의 제왕절개율 차이 (Differences of Cesarean Section Rates according to San-Yin-Jiao(SP6) Acupressure for Women in Labor)

  • 장순복;박용원;조재성;이미경;이병철;이수정
    • 대한간호학회지
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    • 제34권2호
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    • pp.324-332
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    • 2004
  • Purpose: The purpose of this study was to explain differences of cesarean section rates according to San- Yin-Jiao(SP6) acupressure for women in labor. Method: A noneqivalent control group pre test - post test design was used to explain differences of cesarean section rates according to SP6 acupressure. The participants were 209 women who were assigned to one of three groups SP6 acupressure(n=86), SP6 touch(n=47), and control group(n=76). For 30 minutes, the SP6 acupressure group received SP6 acupressure, and the SP6 touch group received SP6 touch for the duration of each uterine contraction. The Control group was encouraged to deep breath and relax for the duration of each uterine contraction for 30 minutes. Result: The rates of cesarean section were 12.8%, 29.8%, and 22.4% for the SP6 acupressure group, SP6 touch group, and control group respectively. There was a significant difference among groups (p=0.049). Cesarean section rateswere significantly different between the SP6 acupressure and non-SP6 acupressure group(p=0.035). Conclusion: This finding shows that 30 minutes of SP6 acupressure was effective in decreasing the cesarean section rate. Therefore, SP6 acupressure during labor could be applied as an effective nursing intervention.