• Animal Systematics, Evolution and Diversity
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• v.14 no.2
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• pp.105-116
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• 1998

Two species of notodelophyid copepods, Doroixys uncinata Kerschner, 1879 and Dorophygus rigidus Ooishi, 1962 are redescribed on the basis of the specimens taken from the ascidians deposited at the Department of Biological Science, Ewha Womans University. The former species were taken from the test of the commpound ascidian Aplidium glabrum(Verrill), and the latter from the body cavity of the solitary ascidians Cnemidocarpa irene(Hartmeyer) and Stylea tokiokai Nishikawa.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.565-566
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• 2001

To investigate the food organisms of the Chasmichthys dolichognathus during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchongnam-do Sochon-gun Su-myon Dodun-ri between on early June from end of May 1998, were observed. Total length of the juveniles of C. dolichognathus was 6.5mm ∼10.0mm size, and the participation rate of feeding was 67.7％. Main food organisms were such as copepods, amphipods, shrimp larvae, polychaete larvae, and these occupied more than dry weight 2％. Copepods among them dominated the most quantitys by avergage 65.5％, and next, food organismsms appeared much by order of polychaete larvae and shrimp larvae etc. Therefore, most important food organisms of juvenile stage of C. dolichognathus were copepods, polychaete larvae, shrimp larvae etc.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.29 no.4
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• pp.527-536
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• 1996

The patterns of diel horizontal migration (DHM) of 7 copepod species are compared as part of a general investigation of the zooplankton adaptations to the surf zone habitats. In a sandy shore surf zone of Yongil Bay, 3 sites such as the bottom and surface of 1 m water depth and water's edge are sampled with a sledge net(n=108). The surf zone copepod assemblage is dominated by 7 species; Acartia hudsonica, Fseudodiaptomus marinus, Paracalanus indicus, Calanus sinicus, Oithona similis, Sinocalanus tenellus and Labidocera bipinnata. Threefold variations in copepod abundance are observed within a diel cycle. Abundances of 7 dominant species and total copepods captured in the surface exhibit significant diel differences, but those taken in the bottom are not significantly affected by diel period. It is shown that about $90\%$ of the surf zone copepods performed DHM. The nocturnal high densities of copepods occurred for a neap tide when the offshore winds prevailed, suggesting the animals' ability for horizontal orientation and an active locomotion without invoking passive transportation by currents. Photoreactive behavior of copepods triggered by relative changes in light intensity may be a primary factor inducing DHM by aggregating in the surf zone during the night and spreading out at day; then copepods may reduce encounters with visual predators. In A. hudsonica, ontogenetic variations in timings of DHM are evident. Such variations are likely to minimize intraspecific competition for diets. Data on shoreward migration of copepods indicate that A. hudsonica, P. indicus, O. similis and S. tenellus can maintain swimming velocities of about $20m\;h^{-1}$ for durations of more than an hour. Our observations of strong diel difference in abundances point out the need for both day and night samplings in surf zone habitats, if the importance of these habitats to planktonic copepods are to be fully understood.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.32 no.1
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• pp.22-29
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• 1999

Biological and chemical characteristics and trophodynamics in the frontal zone were investigated in the southern waters of Korea, Temperature, nutrients (dissolved inorganic nitrogen, $PO_4^{3-}-P$, and $SiO_2^{-}-Si$) chlorophyll a and zooplankton were collected and analyzed along the two transects, the frontal zone and the non-frontal zone, in April, 1994. Nutrients were higher in the non-frontal zone than in the frontal zone. But chlorophyll a concentration was high in the frontal zone, particularly at the 20 m depth of the main frontal station (St. TII-2), where was located at the junction between the stratified layer and the non-stratified layer with the lowest nutrients. Zooplankton was more abundant in the frontal zone than in the non-frontal zone, particularly at the innermost station of the frontal zone. Copepods showed high composition rate more than $90\%$ at all stations except the main frontal station (St. TII-2). At the main frontal station (St. TII-2), euphausiids and siphonophores were dominated. Chlorophyll a revealed a significant relationships with $SiO_2^{-}-Si$ in both transects and copepods in the non-frontal zone. Copepods also showed very close relationship with siphonophores in the frontal zone. This suggests that the abundance of copepods could be controlled as bottom-up in the non-frontal zone and as top-down in the frontal zone.

• Animal cells and systems
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• v.8 no.3
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• pp.187-196
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• 2004

Two new species of siphonostomatoid copepods, Asterocheres tubiporae n. sp. and Entomopsyllus stocki n. sp., associated with the stoloniferan coral Tubipora musica (Linnaeus) are described from Madagascar. Asterocheres tubiporae is characterized by the possession of a large posteroventral process on the caudal ramus and the elongated free segment of leg 5. Entomopsyllus stocki is readily distinguished from its congeners by the possession in the female of 15-segmented antennule and three spines plus two setae on the third exopodal segment of leg 4.

• Animal cells and systems
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• v.8 no.3
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• pp.165-186
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• 2004

Five new species of copepods associated with marine invertebrates are described from shallow water of the Pacific coast of Panama. They are Pseudomacrochiron pocilloporae n. sp., Acontiophorus panamensis n. sp. and Asterocheres urabensis n. sp. associated with the scleractinian coral Pocillopora damicornis (Linnaeus), Asterocheres pilosus n. sp. associated with the echinoid Eucidaris thouarsii (Valenciennes), and Asterocheres walteri n. sp. associated with the sea star Oreaster brevispinis.

• Korean Journal of Environmental Biology
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• v.23 no.4
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• pp.343-356
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• 2005

A pictorial key to total 46 species belonging to 15 genera of two subfamilies in the family Cyclopidae is provided as a result of the serial researches on the freshwater cyclopoid copepods in South Korea.

• Korean Journal of Environmental Biology
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• v.21 no.4
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• pp.366-367
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• 2003

Nineteen rockfishes representing two species in the family Scorpaenidae were collected from Oregon Coast Aquarium in July 2003 and examined for parasitic copepods. The parasitic copepods were taken from the gills of Sebastes crameri and fins of S. melanops. With regard to the prevalence of copepod 22.2% of the fishes were infected by C. uncinata, and 30.0% by N. robusta. Intensity of infections of Clavella uncinata to Sebastes melanops, showed a range of 4 to 6 with a mean of 5.0 per fish while Neobrachiella robusta to S. crameri was 1 to 6 with a mean of 2.7.

• 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.

• Animal Systematics, Evolution and Diversity
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• v.27 no.1
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• pp.35-46
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• 2011

Three aetideid copepods collected from the East Sea of Korea are described: Bradyidius angustus (Tanaka, 1957), Gaetanus minutus (Sars, 1907), and Aetideus acutus Farran, 1929. The former two species are new to the Korean copepod fauna. The sequences of cytochrome c oxidase subunit 1 were determined to be the molecular characteristics of these three species.