• Title/Summary/Keyword: copepoda

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First Record of the Genus Halectinosoma (Copepoda: Harpacticoida: Ectinosomatidae) with Redescription of H. perforatum from Korea

  • Kim, Jong Guk;Jung, Tae Won;Yoon, Seong Myeong
    • Korean Journal of Environmental Biology
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    • v.33 no.2
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    • pp.132-139
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    • 2015
  • The genus Halectinosoma Vervoort, 1962 is first reported from Korean waters by the discovery of H. perforatum $It{\hat{o}}$, 1981. This species, previously recorded only from Japan, is collected from the sandy beach on the south coast of Korea, and is well distinguished from other congeners by the combination of following morphological characteristics: the elongate caudal ramus; the remarkably bilobated exopod of female P5; the small innermost seta on the distal margin of female P5 exopod; the presence of three setae on the distal exopodal segment in P4; and the presence of scale-like spinules on the ventral surfaces of urosomite. We herein provide detailed description and illustrations of this species.

Copepods (Crustacea) Associated with Marine Invertebrates from Great Barrier Reef, Australia (오스트레일리아 대보초의 해양 무척추동물에 공생하는 요각류 (갑각강))

  • Kim II-Hoi
    • Animal Systematics, Evolution and Diversity
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    • v.20 no.2
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    • pp.109-140
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    • 2004
  • Seven new species of cope pods associated with marine invertebrates are described from the Great Barrier Reef, Australia. They are Panjakus bidentis from the scleractinian Pocillopora verrucosa (Ellis and Solander), Scyphuliger humesi, S. vicinus and S. placidus from the scleractinian Acropora squarrosa (Ehrenberg), Doridicola parapatulus from the nudibranch Glossodoris atromarginata (Cuvier), Ruhtra germinata from an unidentified alcyonacean coral, and Collocheres oribullatus from the crinoid Comanthina belli (Carpenter).

Patterns of Vertical Distribution and Diel Vertical Migration of Zooplankton in the East Sea of Korea (Sea of Japan)

  • Park, Chul;Lee, Chang-Rae;Hong, Sung-Yun
    • Journal of the korean society of oceanography
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    • v.32 no.1
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    • pp.38-45
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    • 1997
  • To find out the changes in vertical distribution patterns over the 24-h period, a key and the first step to tackle the problem of adaptive significance of diel vertical migration (DVM), vertically stratified time series samplings with multiple opening/closing plankton samplers were done in the East Sea of Korea (Sea of Japan). Sampling was done almost every 4 h for one day period following the same water parcel in Nov. 1995 and May 1996, respectively. Resultant patterns of vertical distribution showed that some species such as most abundant taxa Metridia pacifica and Scolecithyicella minor, both Copepoda, performed DVM even in the study area of strong thermal stratification. Their patterns of DVM such as distance scales and timing of movements were not the same each other, and they were separated from other taxa in the dendrogram obtained by the cluster analyses, Most minor taxa grouped in one, however, seemed not to do DVM in the study area of strong thermal stratification. They usually preferred the warmer surface layer where the foods were probably more abundant.

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Taxonomy on Freshwater Canthocamptid Harpacticoids from Korea II. Genus Attheyella (한국 담수산 딱정장수노벌레과 갈고리노벌레류의 분류 II. 털보딱정 장수노벌레 (Attheyella)속)

  • Cheon Young Chang;Ji Min Lee
    • Animal Systematics, Evolution and Diversity
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    • v.19 no.2
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    • pp.189-201
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    • 2003
  • A taxonomic study on the freshwater harpacticoids of the genus Attheyella has been accomplished as one of the serial researches on the family Canthocamptidae in South Korea. As a result, a total of seven species belonging to Attheyella are listed, three of which are new to Korean fauna: A. crassa (Sars), A. nakaii (Brehm), and A. orientalis Chappuis. A key to the species of the genus Attheyella known from Korea is prepared.

Taxonomy on Freshwater Canthocamptid Harpacticoids from Korea III. Genera Mesochra and Elaphoidella (한국 담수산 딱정장수노벌레과 갈고리노벌레류의 분류 III. 큰뿔장수노벌레속 (Mesochra)과 사슴노벌레속 (Elaphoidella))

  • Lee, Ji-Min;Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
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    • v.19 no.2
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    • pp.203-216
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    • 2003
  • Genera Mesochra and Elaphoidella have been studied as one of the serial studies on the taxonomy of the family Canthocamptidae in South Korea. As a result of it, two species of Mesochra and three species of Elapholidella are added to Korean fauna: M. alaskana Wilson, M. suifunensis Borutskii, E. grandidieri (Guerne and Richard), E. bidens (Schmeil) and E. superpedalis Shen and Tai. A key to the species of the genera Mesochra and Elaphoidella known from Korea is prepared.

Six new species of Copepoda (Clausiidae, Pseudanthessiidae, Polyankyliidae) associated with polychaetes from Korea

  • Kim, Il-Hoi
    • Journal of Species Research
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    • v.3 no.2
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    • pp.95-122
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    • 2014
  • Six new species of copepods associated with polychaetes are described from Korea. Included are Indoclausia bipartita n. sp., Clausia parva n. sp., and Maxilliclausia propria n. gen. n. sp. in the Clausiidae; Pseudanthessius excertus n. sp. in the Pseudanthessiidae; and Polyankylis ovilaxa n. sp. and Sewelloya plana n. gen. n. sp. in the Polyankyliidae. The new genus Maxilliclausia has a peculiar maxilla in which the distal segment forms a sucking disk, a non-prehensile antenna, vestigial legs 3 and 5, and lacks a maxilliped and leg 4. The two new species of the Polyankyllidae are discovered as external associates of terebellid polychaetes. The new genus Sewelloya has a simple female maxilliped bearing only two small setae on its terminal segment, an uniramous leg 4 bearing 1-segmented exopod, and a reduced leg 5 represented by three setae. The genera Terebelliphilus Kim, 2001 which was originally placed in the Sabelliphilidae, and Octophiophora Stock, 1988 and Stockia Sebastian and Pillai, 1974, both of the latters with uncertain familial positions, are transferred to the Polyankyliidae. A key to five genera of the Polyankyliidae are provided.

Discovery of Halicyclops continentalis (Cyclopidae, Halicyclopinae) from Estuaries and Salt Marshes on the West Coast of South Korea

  • Cheon, Young-Chang
    • Animal Systematics, Evolution and Diversity
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    • v.28 no.1
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    • pp.12-19
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    • 2012
  • A cyclopoid species from several salt marshes and estuaries on the west coast of South Korea were identified as Halicyclops continentalis Ueda and Nagai, 2009, recently described from Ariake Bay at northwestern Kyushu, Japan. Detailed examination on the Korean specimens justifies Ueda and Nagai's proposition that the H. sinensis sensu Tai and Chen, 1979 formerly known from the Chinese coast of the Yellow Sea should be identical to H. continentalis. Furthermore, this report reinforces their assumption on the geographical distribution of H. continentalis, that is, the Ariake Bay population is a continental relict of the East Asia continent. Herein, a redescription of the species is provided on the basis of the Korean specimens, with a comment on the morphological comparison among three populations around the Yellow Sea.

Spatio-temporal Distribution of the Genus Acartia (Copepoda: Calanoida) in the Southwestern Waters of Korea

  • Soh, Ho-Young;Jeong, Hyeon-Gyeong
    • Korean Journal of Environmental Biology
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    • v.21 no.4
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    • pp.422-427
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    • 2003
  • The spatio-temporal distribution of four coexisting acartiid species in two subgenera Acartiura (Acartia hongi and A. omorii) and Odontacartia (A. erythraea and A. pacifica) was examined at seven stations in the southwestern waters of Korea, between January to December 1998. A. hongi occurred dominantly in the northern regions from winter to spring while A. omorii predominated in the southern regions in spring and early summer when the more saline (> 33.0 psu) and high chlorophyll-$\alpha$ concentration water mass appeared. With the increase of temperature (> $20^{\circ}C$), however, both species disappeared and then replaced with A. erythraea and A. pacifica. A. erythraea (rare species), appeared in the middle regions where the high chlorophyll-$\alpha$ concentration ($3{\mu}g\; I^{-1}$) in the summer, while A. pacifica was abundant in all regions through summer and fall. It is suggested that the seasonal succession of the genus Acartia was subgenus-specifically affected by environmental factors such as temperature, salinity and chlorophyll-$\alpha$ concentration.

Four Species of Copepoda (Poecilostomatoida) Parasitic on Marine Fishes of Korea (한국산 해산어류에 기생하는 요각류 4종)

  • SUH Hae-Lip;SHIM Jae-Duk;CHOI Sang-Duk
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.25 no.4
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    • pp.291-300
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    • 1992
  • Four known species of the copepod parasite were recovered from three marine fishes of Korea. It contains redescription of three species of Acanthochondria(A. brevicorpa Yu, A. tchangi Yu and A. yui Shiino) and Anchistrotos kojimensis Do & Ho. All of these species are newly recorded from the Korean waters.

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Harpacticoid Copepods of Genus Onychocamptus (Laophontidae) from Korea (한국산 발톱갈고리노벌레속(발톱갈고리노벌레과)의 요각류)

  • Lee Ji Min;Chang Cheon Young
    • Animal Systematics, Evolution and Diversity
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    • v.21 no.1
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    • pp.31-43
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    • 2005
  • Three harpacticoid species of the genus Onychocamptus are reported from the inland waters of South Korea: O. vitiospinulosa (Shen and Tai), O. mohammed (Blanchard and Richard) and O. bengalensis (Sewell). Of these, O. vitiospinulosa and O. mohammed are newly added to Korean copepod fauna. Onychocamptus vitiospinulosa is redescribed. Systematic accounts on the morphological details and the intraspecific variabilities are provided with a key to the Onychocamptus species from Korea.