• Fisheries and Aquatic Sciences
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• v.18 no.3
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• pp.311-316
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• 2015

Ten specimens of Brama dussumieri (family Bramidae) were collected from waters off Jeju Island, Busan, and Gangneung, Korea, during 2013-2014. The specimens were characterized by having 58-64 lateral line scales and 13-15 gill rakers. An analysis of 567 base pair sequences of mitochondrial DNA cytochrome c oxidase subunit I showed that sequences in our ten specimens are concordant with those of B. dussumieri from the USA, India, and Japan, although with slight differences (genetic distance = 0.000-0.018). Brama dussumieri was distinguished from the most similar species, Brama japonica, by the number of lateral line scales (57-65 in B. dussumieri vs. 65-75 in B. japonica) and the number of gill rakers (13-15 in B. dussumieri vs. 17-20 in B. japonica). We propose the new Korean name "Wae-sae-da-rae" for B. dussumieri in Korea.

• Fisheries and Aquatic Sciences
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• v.18 no.3
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• pp.317-320
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• 2015

A new record of Nomeus gronovii is described here based on a single specimen collected off the Jeju Island, Korea. The species has a blotched and spotted pattern on the body, 41 vertebrae, and a large pectoral fin with a white lower part. A molecular analysis of the partial (500 bp) cytochrome c oxidase subunit I gene showed that this specimen is closely related to specimens of N. gronovii collected in South Africa (Kimura-two-parameter distance = 0.006-0.012). A new Korean name, "Ga-neun-dong-gang-yeon-chi", is proposed for this species.

• Applied Microscopy
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• v.45 no.4
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• pp.254-258
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• 2015

A histological study on the retina of Misgurnus anguillicaudatus was carried out by light microscopy and scanning electron microscopy as part of getting information about relation between its habitat and visual cells. The visual cells of the retina in M. anguillicaudatus, a bottom-dwelling freshwater pond loach in stagnant or slow waters such as swamps, reservoirs and paddy fields, consists of double cones and large rods. The cones form a row mosaic pattern in which the partners of double cones are linearly oriented with a large rod. In a double cone, the two members are unequal such that one cone may be longer than the other.

• The Korean Journal of Ecology
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• v.6 no.4
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• pp.10-20
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• 1983

Morphological and ecological comparions are made between specimens of Cobitis koreensis KIM and the geographically restricted population of the Cobitid fish which is found along the Begchon stream, Puangun, Cholla-bugdo province over a 12-month period of 1982 and 1983. The Begchon population is tentatively identified as Cobitis koreensis, but the color patterns and two morphometric proportions differ widely fromthose reported previously for this species. In addition to these character, it is easily distinguished from C. koreensis by the smaller body size, by having the larger egg size and the less egg number in female during the breeding season. As the differentiation of this population is primarily due to geographically isolation, it is supposed that Begchon cobitid population may be an undescribed distinct subspecies of K. koreensis or above the conventional subspecies level.

• Korean Journal of Materials Research
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• v.13 no.1
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• pp.11-17
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• 2003

DC characteristics of recessed gate 4H-SiC MESFET were investigated using the device/circuit simulation tool, PISCES. Results of theoretical calculation were compared with the experimental data for the extraction of modeling parameters which were implemented for the prediction of DC and gate leakage characteristics at high temperatures. The current-voltage analysis using a fixed mobility model revealed that the short channel effect is influenced by the defects in SiC. The incomplete ionization models are found out significant physical models for an accurate prediction of SiC device performance. Gate leakage is shown to increase with the device operation temperatures and to decrease with the Schottky barrier height of gate metal.

• The Korean Journal of Zoology
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• v.36 no.2
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• pp.175-180
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• 1993

Eighty one specimens of nhodeus sericeus (Pallas, 1176) were collected at the upper stream of the Som River (37$^{\circ}$32' 38" N, 127$^{\circ}$58' 57" E: Maegok-ri, Konggun-myon, Hoengsong-gun, Kanguvon-do, Korea) which is a tributary of the Namhan River. This is the first report of the species in the southern part of the Korean Peninsula. This species is well discriminated from the other species in the genus nhodeus by the following respects. The number of scales of transverse series is more than 34 (range 34-37, mean 35.7 $\pm$0.7). Head is echo감or and snout is Bonder than those of the other species. The upper part of the eve is always black and the lateral body surfaces are reddish purple. It had been hem that the southern limit of the distribution of Rhodeus sericeus was the Yonghung River in Hamgvongnam-do, north-eastern part of the Korean Peninsula. But their distributional range is extended more southerly to the Han River system which tons westward through the central part of the Korean Peninsula.Peninsula.

• Korean Journal of Ichthyology
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• v.9 no.2
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• pp.163-168
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• 1997

Four specimens of Chlorophthalmus albatrossis Jordan and Starks and one specimen of Chlorophthalmus acutifrons Hiyama belonging to the family Chlorophthalmidae were collected for the first time from Korea. We propose "Pa-rang-nun-mae-tung-yi" for Chlorophthalmus albatrossis and "Ch$\breve{u}$m-mun-pa-rang-nun-mae-tung-yi" for Chlorophthalmus acutifrons as a new Korean name.

• Korean Journal of Ichthyology
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• v.5 no.2
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• pp.165-176
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• 1993

Six species of the family Tetraodontidae collected from coastal waters of Korea were described with photographs, all of which are unreported previously from Korea. They are Lagocephalus inermis (Temminck et Schlegel), Takifugu alboplumbeus (Richardson), T. pseudommus (Chu), T. reticularis (Tien, Cheng et Wang), Arothron hispidus (Linnaeus) and A. nigropunctatus (Bloch et Schneider).

• Korean Journal of Ichthyology
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• v.5 no.2
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• pp.208-216
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• 1993

The territorial behavior of the naked goby, Gobiosoma bosci, was observed in 80-liter aquaria. Social behavior was observed for an extended time in daily observation periods. Individuals of G. bosci, regardless of size and sex, exhibited agonistic behavior. The aggresive behaviors of approaching, threatening, attacking, and fighting were recorded as agonistic behavior. All individuals are capable of changing their color and camouflaging themselves by matching the color of bottom. Especially, the resident and the intruder are of the same size, the fighting duration was prolonged and the variability of coloration was at its peak.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.47 no.1
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• pp.79-83
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• 2014

Thirty five juveniles belonging to the genus Collichthys were collected using a bag net at Gang-wha-do, in the eastern Yellow Sea, between July and September, 2012, and identified using combined genetic and morphological methods. We sequenced 316 base pairs of mitochondrial DNA cytochrome c oxidase subunit I of 35 individuals, of which 22 individuals were identified as Collichthys niveatus (12.9-47.6 mm in SL) and 13 as Collichthys lucidus (13.4-40.3 mm SL). Morphologically, the number of occipital crests, an important taxonomic character during the adult stage, could not distinguish the two species during the juvenile stage, but the shape of the first anal fin spine clearly distinguished the two species even among juveniles.