• Title/Summary/Keyword: Diosaccidae

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The larval development of Paramphiascella vararensis(T. Scott) (Copepoda: Harpacticoida: Diosaccidae) reared in laboratory: I. Larval development of nauplius stages (요각류 Paramphiasella vararensis(T. Scott) (Hapacticoida: Diosaccidae)의 유생 발생: I. nauplius 유생의 발생)

  • Jung, Min-Min;Lee, Hwa-Ja;Kim, Hyeung-Sin
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.5 no.3
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    • pp.233-237
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    • 2000
  • The complete postembryonic development of nauplius stages of Paramphiascella vararensis T. Scotf (Copepoda: Harpacticoida) is described and illustrated based on specimens cultured in laboratory. The nauplii of P. vararensis feed on powder of a green algae, Ulva perusa. This species is metamorphosed to the stages of nauplius. Development from the nauplius stage to the nauplius stage take about 12 days under culture conditions of 33-34 ppt of salinity, 22-23$^{\circ}$C of temperature and feed on the algal powder. In the nauplius stages of P. vararensis, the rudiment of maxillule appeares at the third nauplius stage, and maxilla appeares at the fifth nauplius stage.

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The larval development of Paramphiascella vararensis(T. Scott) (Copepoda: Harpacticoida: Diosaccidae) reared in laboratory: II. Larvae development of copepodid stages (요각류 Paramphiascella vararensis(T, Scott) (Harpacticoida: Diosaccidae)의 유생 발생: II. copepodid 유생의 발생)

  • Jung, Min-Min;Lee, Hwa-Ja;Kim, Hyeung-Sin
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.5 no.3
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    • pp.238-244
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    • 2000
  • The complete postembryonic developments of copepodid stages of Paramphiascella vararensis T. Scott(Copepoda: Harpacticoida) are described and illustrated based on specimens cultured in laboratory. The copepodites of P. vararensis feed on powder of one of green macro-algae species Ulva pertusa. Developmental time from copepodid stage to adult (copepodid stage) is about 15 days with culture conditions of 33-34 ppt of salinity, 22-23$^{\circ}$C of temperature and feed on algae powder. Sexual characters of the species are distinct on the copepodid stage. Sexual characters appear in size, antennule, pereiopods of second and bases of the fifth and sixth legs. Males are considerably smaller than females in size. In the antennule, the fourth segment of the male extremely is modified and swollen for female. In the segment number of the endopod of second pereiopod, female has 3 segments while male bears 2 segments. The female has 3 setae while the male bears 2 setae on the inner lobe of basis of fifth leg. In the basis of sixth leg, the female has 2 setae while the male has 3 setae.

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New Records on Three Harpacticoid Copepods Associated with Marine Macroalgae in Korea

  • Song Sung Joon;Yun Sung Gyu;Chang Cheon Young
    • Fisheries and Aquatic Sciences
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    • v.2 no.2
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    • pp.189-198
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    • 1999
  • Three harpacticoid copepods, Dactylopodamphiascopsis latifolius (Sars, 1909), Diosaccus ezoensis Ito, 1974 and Ambunguipes rufocincta (Brady, 1880) are recorded as new to the Korean fauna with illustrations, on the basis of the specimens collected mainly from the marine macro algae during the period from June 1990 to September 1997.

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