• Title/Summary/Keyword: harpacticoid copepods

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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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A Marine Harpacticoid, Lourinia armata(Claus, 1866) New to Korea (Crustacea: Copepoda) (해산 하르팍티쿠스목 1미기록종 Lourinia armata(Claus, 1866) (갑각 강, 요각 아강))

  • Yoo Kwang-Il;Lee Wonchoel
    • Animal Systematics, Evolution and Diversity
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    • v.9 no.2
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    • pp.115-121
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    • 1993
  • Only 12 species of marine harpacticoid copepods are ercorded in Koran waters. With the study on the taxonomy of harpacticoid copepods in Korean waters, Lourinia armata(Claus, 1866) was found in the samples from the rocky shore of Names off the east coast and Chiju Hrbor in June and August 1992, respectively. This species is reported to be distributed in the far east Asian coasts for the first time. It was redescribed and figured.

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Meiobenthic Communities in Extreme Deep-sea Environment (심해 극한 환경에서의 중형저서동물 군집)

  • Kim Dong-Sung;Min Won-Gi
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.39 no.spc1
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    • pp.203-213
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    • 2006
  • The spatial patterns of meiobenthic communities in deep-sea sediment were examined. Sediment samples for analyzing of meiobenthic community structure were collected using a remote operated vehicle (ROV), multiple corer TV grab at 20 stations at five sites. In all, 15 meiofauna groups were recorded. Nematodes were the most abundant taxon. Benthic foraminiferans, harpacticoid copepods, polychaetes, and crustacean naupii were also dominant groups at all sites. The total meiofauna density at the study sites varied from 49 to 419 ind./$10cm^2$. The maximum density was recorded at a site located in Challenger Deep in the Mariana trench where simple benthic foraminifera with organic walls flourish. These distinctive taxa seem to be characteristic of the deepest ocean depths. Active hydrothermal sediments contain up to 150 harpacticoid copepods per $10cm^2$ of sediment. In a inactive ridge sediments, devoid of macrofaunal organisms:, the abundance of harpacticoid copepods never exceeded 15 ind./$10cm^2$. Multivariate analysis (multidimensional scaling) revealed significant differences in community structure among the three regions; near an active hydrothermal vent, in the deepest ocean depths and at typical deep-sea bed sites.

Marine Harpacticoid Copepods of Genus Eudactylopus(Harpacticoida, Thalestridae) in Korea

  • Cheon Young Chang;Sung Joon Song
    • Animal Systematics, Evolution and Diversity
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    • v.11 no.3
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    • pp.379-388
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    • 1995
  • Two marine harpacticoid copepods are newly recorded from Korea : Eudactylopus specitabilis (Brian, 1923) and E. andrewi Sewell , 1940. Six species are currently recognized in the genus Eudactylopus, multitidue of which were often disputed among authors on their taxonomic status, so we treat here the taxonomic features of the two species above on the basis of specimens from South Sea and East Sea of Korea. E.spectabilis occurred first outside the Mediterranean Sea. and is fully redescribed with illustrations. Important male characters like the shape of leg 2 endopod and leg 5 with its setal arrangement are particularly emphasized as the diagnostic characters.

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Feeding Ecology of Luciogobius guttatus (Pisces; Gobiidae) in the Youngjong Tide Pool, Incheon, Korea (영종도 조수웅덩이에 서식하는 미끈망둑, Luciogobius guttatus(Gobiidae)의 식성)

  • Kim, Byung Gi;Kim, Ji Hye;Chung, Su Whan;Han, Kyung Nam
    • Korean Journal of Ichthyology
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    • v.26 no.3
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    • pp.202-211
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    • 2014
  • Feeding ecology of Luciogobius guttatus (Flat-head goby) populations were investigated on the Youngjong, Incheon, Korea. In total, 257 individuals ranging from 13.4 to 57.5 mm standard length SL were analyzed. L. guttatus was studied in the Tide-pool from January 2010 to December 2010 monthly. The stomach contents of L. guttatus consisted mainly of Copepods and Brachyurans. Amphipods, Anomurans, Cumaceans, Macrurans, Insects and small stones were also observed. As a result, the benthic crustaceans were important food for this species. Harpacticoid spp. (Copepods) and Hemigrapsus spp. (Brachyurans) were major prey organisms for all fish size and seasons.

Cross-generational Effect of Bisphenol A on the Harpacticoid Copepod Tigriopus west: A Full Life Cycle Toxicity Test

  • Bang, Hyun Woo
    • Korean Journal of Environmental Biology
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    • v.36 no.4
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    • pp.456-462
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    • 2018
  • The purpose of this study was to assess cross-generational effects of bisphenol A exposure in benthic copepods, Tigriopus west. Nauplii (<24 hours old) were exposed to graded concentrations of bisphenol A, and toxicity end-points such as survival, development, sex ratio, and fecundity were measured. $F_1$ generations were grown under innoxious conditions, and similarly assessed. Significant differences were observed in development of nauplii and copepodites, between exposed and non-exposed copepods; however, there were no differences in survival of nauplii or copepodites, sex ratio, or brooding rate in parental generation. In contrast, in the $F_1$ generation, there were significant differences between the control group and exposed group in survival and development of nauplii. Length, width, and biomass of parental and $F_1$ generations were reduced in the exposed group compared to the control group. In addition, some deformities, such as swelling of the prosome, abnormally shaped egg sac, and dwarfism were observed after exposure to bisphenol A. So, our study demonstrates that a cross-generation toxicity test and monitoring of morphological deformities in harpacticoid copepods, can be useful for development of potential bioindicators for environmental monitoring, and assessment of chemical impact.

Harpacticoid Copepods of Genus Attheyella (Harpacticoida: Canthocamptidae)in Korea (Attheyella 속의 한국산 하르팍티쿠스류)

  • 장천영
    • Animal Systematics, Evolution and Diversity
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    • v.9 no.2
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    • pp.181-190
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    • 1993
  • Four harpacticoid species belonging to genus Attheyella were confirmed from South Korea: Attheyella (Attheyella) coream Miura, A. (A.) paucisetosa Chang and Kim, A. (Mrazekiella) byblis Chang and Kin, and A. (M.) tetraspinosa, n. sp. The new species and the male of A. (A.) paucisetosa are described. A. (M.) tetraspinosa, n. sp. most resembles A. baikalensis Borutzky, but readily distinguished from it and its relatives by the extraordinarily elongated leg 5 exopod and the female leg 5 basipod bearing four spines on it.

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Three Miraciid Copepods (Harpacticoida, Miraciidae) from South Korea

  • Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
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    • v.25 no.3
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    • pp.215-225
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    • 2009
  • Three harpacticoid species of the family Miraciidae are reported from neritic and brackish waters in Korea: Amphiascus kawamurai Ueda and Nagai, 2005, Schizopera clandestina (Klie, 1924) and Schizopera neglecta Akatova, 1935. Amphiascus kawamurai is newly recorded from Korea. Redescription is provided with the systematic accounts and illustrations of them.