• 제목/요약/키워드: copepoda

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Phrixocephalus umbellatus (Copepoda : Lernaeidae) from Marine Fish, Branchiostegus japonicus of the Korea Southern Sea

  • Choi, Sang-Duk;Lee, Chang-Hoon;Chang, Dae-Soo;Ha, Dong-Soo
    • 한국양식학회지
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    • 제13권1호
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    • pp.9-12
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    • 2000
  • A species of the parasitic copepods Phrixcephalus unbellatus (Lernaeide ; Cyclopoidea) from Branchiostegus japonicus is described and reported for the first time in Korea. The parasite was recovered from the eye of host. P. umbellatus was easily identified by the body shape extensive ramification of the antennal processes and numerous branches on the thoracic horns, The parasite inserted its head and the anterior portion of thorax up to the 4th segment in the eye ball of the host through a narrow hole which it usually burrowed near the upper margin of the cornea above the crystalline lens. Prevaklence of the parasite increased from 3.3% January to 11.9% in June.

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Sea lice (Copepoda, Siphonostomatoida, Caligidae) new to Korea, including three new species

  • Moon, Seong Yong;Kim, Il-Hoi
    • Journal of Species Research
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    • 제1권2호
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    • pp.175-217
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    • 2012
  • Thirteen species of sea lice (Copepoda, Caligidae) are described as parasites of marine fishes from Korea including three new species such as Pseudocaligus longipes n. sp. from Siganus fuscesens (Houttuyn), Lepeophtheirus tamladus n. sp. from Sebastes inermis Cuvier, and Lepeophtheirus gusevi n. sp. from Sebasetes schlegeli Hilgendorf. Remaining ten species are new to Korea: Caligus elongatus Nordmann, 1832; C. equulae Ho and Lin, 2003; C. fistulariae Yamaguti, 1936; C. laticaudus Shiino, 1960; C. rotundigenitalis Y$\ddot{u}$, 1933; Metacaligus uruguayensis (Thomsen, 1949); Lepeophtheirus atypicus Lin, Ho and Chen, 1996; L. parvulus Shiino, 1952; Anuretes quadrilaterus Shiino, 1954; and Pseudanuretes chaetodontis Yamaguti, 1936.

A New Species of the Rarely Known Genus Apolethon(Copepoda, Harpacticoida, Laophontidae) from Brackish Waters of Korea

  • Lee, Ji-Min;Chang, Cheon-Young
    • Animal cells and systems
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    • 제12권4호
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    • pp.249-259
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    • 2008
  • A new laophontid copepod species, Apolethon articulatus n. sp., is described from the estuaries and salt marshes in South Korea. Apolethon articulatus is similar to the three congeneric species currently known in sharing the character combination of the elongate first endopodal segment of leg 1 with inner seta and the expansion of second endopodal segments of legs 2-4 with decrease in the number of setae on them. However, A. articulatus differs from them by the separate exopod of female leg 5 and the armature of mandibular palp with 6 setae. Description and taxonomic accounts of the new species are presented herein with detailed illustrations and SEM micrographs. As the true identity of the rarely known genus has not been clarified yet, a revised generic diagnosis is provided with a key to the species hitherto known in the genus.

Effects of the Insect Growth Regulator Dimilin on the Survival Rate of Larvae, Adults, and Egg Viability of Tigriopus japonicus Mori (Copepoda ; Harpacticoida)

  • Choi Kyung-Hwa;Suh Myung-Sook;Kim Chang-Hyun
    • Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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    • 제1권1호
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    • pp.61-67
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    • 1997
  • The effects of Insect growth regulator Dimilin which interfere with the synthesis of chitin in the cuticle of insect larvae were investigated at various concentrations using the copepod larvae of Tigriopus japonicus Mori. The larvae were cultured at control, 1, 5, 10, 20, 50, and 100 ppb Dimilin solutions and three replicate experiment were carried out to give correct analysis. Lethal effects of Dimilin on larvae of T. japonicus occurred above 1 ppb Dimilin solution after 8 days. $LC_{50}$ of larvae was 50 ppb Dimilin on the 4th day. Lethal effects of Dimilin on adults or T. japonicus occurred above 20 ppb Dimilin solution after 13 days. $LC_{50}$ of adults was 50 ppb Dimilin on the 12 days. Egg viability has little relation to Dimilin solution concentrations.

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동해의 털담치(이매패류)에 공생하는 요각류 1신종, Modiolicola avdeevi (Modiolicola avadeevi, a New Sabelliphilid Copepod (Poecilostomatoida) from a Bivalve in the Sea of Japan)

  • Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • 제11권3호
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    • pp.315-321
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    • 1995
  • 동해에 서식하는 이매패류인 털담치(Modiolus difficilis)에 공생하는 요각류 1신종 Modiolicola avdeevi를 기재하였다. 이 종은 외견상diolicola bifidus와 매우 유사하나 두 종의 대촉각, 꼬리돌기, 다섯째 다리의 형태를 비교하면 이들은 명백히 다른 종이다.

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한국산 불가사리에 공생하는 요각류 2 종 (Two Species of Copepoda (Poecilostomatoida . Siphonostomatoida) assoicated with Asteroida in Korea)

  • 김일회
    • Animal Systematics, Evolution and Diversity
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    • 제8권1호
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    • pp.57-68
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    • 1992
  • 불가사리에 공생하는 요각류가 북태평양에서는 단 4종이 기록되어 있을 뿐이다. 공생성 요각류를 채집하기 위하여 한국산 불가사리를 조사한 결과 요각류 2종이 채집되었다. 이들은 Synstellicola 속에 속하는 1신종과 Scottomyzon gibberum으로서 이들을 기재 또는 재기재한다. S. gibberum은 북대서양에서만 발견되어지던 종으로서, 한국 해역에서는 여러가지 불가사리에 공생하고 있으며 한국내 분포범위가 넓은 것으로 밝혀졌다.

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First record of the genus Cyclopinoides (Copepoda, Cyclopoida, Cyclopinidae) from the Pacific

  • Chang, Cheon-Young
    • Animal cells and systems
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    • 제15권1호
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    • pp.63-72
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    • 2011
  • A new species belonging to the genus Cyclopinoides Lindberg, 1953 (Cyclopinidae) is described from three beaches in Korea and Japan, as the first record of the genus from the Pacific. Among five species currently recognized in the genus, the new species resembles C. schulzi Herbst, 1964 from the Red Sea in sharing the character combination of 20-segmented antennule and stumpy caudal rami. However, C. orientalis n. sp. differs from it by relatively longer caudal rami (2.5-2.8 times as long as wide in female and about 1.6-1.8 times in male, while less than 2 times in female and about 1.3 times in male of C. schulzi), and by the transformation of an outer distal spine to a slender seta on the distal exopodal segment of leg 4. Moreover, C. orientalis n. sp. is discernible from C. schulzi in having a pyriform copulatory tube (against elongated tubular style in C. schulzi). A key to the species hitherto known in the genus is provided.

Effects of the Insect Growth Regulator Dimilin on the Survival Rate of Larvae, Adults, and Egg Viability of Tigriopus japonicus Mori (Copepoda ; Harpacticoida)

  • Kyung-Hwa Choi;Myu
    • 한국환경과학회지
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    • 제1권1호
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    • pp.61-67
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    • 1992
  • The effects of insect growth regulator Dimilin which interfere with the synthesis of chitin in the cuticle of insect larvae were investigated at various concentrations using the copepod larvae of Tigriopus japoniu Mori. The larvae were cultured at control, 1, 5, 10, 활, 50, and 100 pub Dimilin solutions and three replicate experiment were carried out to give correct analysis. Lethal effects of Dimilin on larvae of T japoniu occurred above 1 ppb Dimilin solution after 8 days. LC50 of larvae was 50 ppb Dimilin on the 4th day. Lethal effects of Dimilin on adults of T. japoniu occurred above 1 ppb Dimilin solution after 13 days. LC50 of adults was 50 ppb Dimilin on the 12 days. Egg viability has little relation to Dimilin solution concentrations.

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한국 담수산 딱정장수노벌레과 갈고리노벌레류의 분류 - 1. 딱정장수노벌레( Canthocamptus)속 (Taxonomy on Freshwater Canthocamptid Harpacticoids (Copepoda) from South Korea - 1. Genus Canthocamptus)

  • Cheon Young Chang;Ji Min Lee
    • Animal Systematics, Evolution and Diversity
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    • 제19권1호
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    • pp.149-159
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    • 2003
  • 한국 담수산 딱정장수노벌레과 (fanthocarnptidae)의 요각류에 대한 분류학적 연구의 일환으로, 딱정장수노벌레속의 2한국미기록종 (C. kitaurensis Kikuchi, C. macrosetifer Ishida)을 보고한다. mirabilis 종군에 속하는 한국산 5종의 추가 관찰재료 목록을 덧붙였다. 현재까지 한국에서 기록된 딱정장수노벌레속의 종 검색표를 작성하였다.

서해의 거미불가사리 Amphioplus ancistrotus에 공생하는 요각류 1신종 - Presynaptiphilus paraminutus (Presynaptiphilus paraminutus n. sp.(Copepoda: Poecilostomatoida: Synaptiphilidae) Associated with the Ophiuroid Amphioplus ancistrotus(Echinodermata: Ophiuroidea) in the Yellow Sea)

  • Sook Shin;Il-Hoi Kim
    • Animal Systematics, Evolution and Diversity
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    • 제19권1호
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    • pp.103-109
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    • 2003
  • 서해안의 조간대에서 거미불가사리류 Amphioplus ancistrotus에 공생하는 요각류 1신종 Presynaptiphilus paraminutus를 기재하였다. 이 신종은 다리의 구조를 볼 때 전에 기록된 P. minutus와 매우 유사하지만 몸이 더 크고, 생식이 중절과 꼬리가지가 더 긴 반면, 항문전절은 더 짧아서 후자의 종과 구별된다.