• Korean Journal of Fisheries and Aquatic Sciences
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• v.37 no.3
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• pp.232-248
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• 2004

In order to utilize fisheries resources under a joint management scheme with adjacent nations, as well as detecting of fishing grounds, the factors which influence yellow croaker (Pseudosciaena polyactis) in Korean waters were studied using historical catch per unit effort and oceanographic data. The main fishing ground near Cheju Island was located along the thermal front formed between the Yellow Sea Bottom Cold Water (YSBCW) and northward moving warm current. When the YSBCW (index temperature: $10^{\circ}C)$ strongly extended southward, the fishing condition were worse than average. Especially, low temperatures greatly influenced stow net fisheries, which were operated in the deep water layer The concentration and dispersal of fishing ground and catch coincided with oceanographic features and the seasonality of water masses.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.25 no.6
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• pp.474-484
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• 1992

The stock identification of small yellow croaker. Pseudosciaena Polyactis from Mokpo area was carried out using molecular biological methods such as mt-DNA restriction fragment length polymorphism(RFLP) and the N-terminal fragment polymorphism of muscle actin obtained after protease digestion. The entire mt-DNA genomic size from the small yellow croaker at Mokpo area was estimated to be about $16\pm0.2$ Kb. Furthermore, fourteen restriction endonucleases revealed a total of 37 restriction sites to the mt-DNA molecule, however, eight of the fourteen enzymes showed a significant restriction site variation. Six of the enzymes examined produced a single restriction profile for all individuals surveyed, indicating that they don't react on the same mt-DNA obtained from small yellow croaker. The Staphylococcus aureus $V_8$ protease is able to cleave the muscle actin of small yellow croaker and to yield a N-terminal peptide of 26 and 16 KDa, respectively.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.38 no.6
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• pp.413-424
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• 2005

The study focused on the fluctuation of the fisheries conditions in fishing ground of yellow croaker, Pseudosciaena polyactis Bleeker. A long-term decreasing trend was observed in the accumulated catches of the species since 1926, with increasing-decreasing fluctuation repeating 6 times. Periodicity was observed in 10-year interval in good fishing years, but not in poor fishing years which had irregular fluctuations. From the geographical distribution of the past catch per unit effort, it was presumed that a group of the species seasonally migrated but most of the groups stayed throughout year in the western area off Cheju Island, which was different from the assumptions of the 1970's. The fishing grounds were distributed along the migration route differently by season, throughout the Yellow Sea and the East China Sea, but shifted gradually southward and narrowed down to the area of $32^{\circ}N-125^{\circ}E$ off Cheju Island, where the center of fishing grounds was given birth to throughout the year with a relatively high density from autumn to spring. It was noted that a negative correlation was shown between the area of fishing grounds and density distribution of catch.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.27 no.5
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• pp.613-619
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• 1994

To investigate the population differences of small yellow croaker (Pseudosciaena polyactis BLEEKER) in the Yellow Sea, five catching sites (three from China; Zoushan, Shanghai and Qingdao, two from Korea; Inchon and Mokpo) were selected for sampling. The populations of small yellow croaker from all five catching sites were investigated to analyze their mtDNA's restriction fragment length polymorphism (RFLP) using 18 kinds of restriction enzymes. The average molecular size of the entire mtDNA was estimated at $16.9{\pm}0.6\;kb$. According to the results of RFLP analysis, a total of 40 restriction sites were identified in every population surveyed and the overall cleavage patterns of mtDNA, based on the RFLP, showed similar tendencies. However, the five restriction enzymes such as ApaI, EcoRI, PstI, SmaI and SstII showed slightly different cleavage patterns which could have resulted from individual variations between the populations of Korea and China.

• Journal of Life Science
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• v.16 no.1
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• pp.88-94
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• 2006

The random amplified polymorphic DNA (RAPD) technique was investigated as a potential tool for the origin identification of olive flounder (Paralichthys olivaceus) and redlip croaker (Pseudosciaena polyactis). Olive flounder specimens were collected from North Korea and several locations of South Korea (Jumunjin, Tongyoung and Geoje). Fishes obtained from Tongyeong and Geoje were cultured products. Redlip croaker specimens were collected from South Korea and China. Consistent and distinct diagnostic bands were easily identified in the RAPD patterns of the olive flounder specimens. Although consistent diagnostic bands rarely appeared in the RAPD pattern of redlip croaker specimens because of their genetic heterogeneity, we were able to find potential diagnostic bands in the average RAPD pattern of each origin.

• Proceedings of the Korean Aquaculture Society Conference
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• 2005.05a
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• pp.180-181
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• 2005

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.36 no.3
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• pp.222-233
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• 2000

A methodology for determining age by otolith of small yellow croaker, Pseudosoiaena polyactis Bleeker, was developed. A thin section method was chosen to be suitable for age determination because the otolith had a three-dimensional shape and thus it was not possible to read the otolith rings on the surface. The clear rings were identified on the vertical-axis cross-sectioned otoliths. The total length-total weight relationship and the growth parameters were estimated with error structure to endow with accuracy. In the relationship between total length and total weight, a multiplicative error structure was assumed because variability in growth increased as a function of the length, and the estimated equation was $W=0.0049L^{3.2153}$. The variability in growth was constant as a function of the age, revealing an additive error structure. The von Bertalanffy growth parameters were obtained from a nonlinear regression as $L_{\infty}= 37.11cm, K=0.20/yr and t_0=-1.88.$

• Korean Journal of Ichthyology
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• v.4 no.1
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• pp.29-53
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• 1992

The taxonomic revision of the family Sciaenidae was made based on the specimens collected from the south-western coasts of the Korea from 1989 to May 1992. The family Sciaenidae from Korea was classified into 12 species belong to 8 genera : Pseudosciaena crocea, Pseudosciaena polyactis, Collichthys lucidus, Collichthys niveatus, Larimichthys rathbunae, Johnius grypotus ; Nibea albiflora, Nibea mitsukurii, Nibea diacanthus, Miichthys miiuy, Argyrosomus argentatus and Atrobucca nibe. Six species, previonsely reported as the family Sciaenidae from Korea, were transferred into different generic name or specific name : Pseudosciaena manchurica into P. polyactis ; Nibea goma into N. diacanthus ; into Miichthys miiuy ; Nibea argentatus into Argyrosomus argentatus ; Nibea nibe into Atrobucca nibe and Johnius belengerii into J. grypotus. The species Collichthys fragilis was identified as the same species of C. lucidus, based on the number of light organs just above abdominal midline, the shape of occipital crest and first spine of anal fin. Keys to genera and species are provided together with description and distributional data.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.27 no.6
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• pp.836-838
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• 1994

1993년에 동해안의 고리, 월성, 울진 앞바다에서 저서어류의 생물상을 계절별로 조사했다. 그 결과 지금까지 남해와 서해에 분포한다고 알려진 참조기를 고리와 월성에서 각각 13마리 (표준체장 $131.8{\sim}180.1mm$)와 1마리 (170.2mm) 채집하여, 본 종이 동해에도 분포하고 있다는 것을 확인했다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.369-370
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• 2001

참조기(Pseudosciaena polyactis Bleeker)는 농어목 민어과에 속하는 어류로 한국을 비롯하여 중국, 대만, 일본 등지에 분포하며, 연간 총 어획량은 약 279,100톤으로 중국 262,800톤(94％), 한국 15,300톤(5.5％), 대 만 1,000톤(0.4％)을 어획하고 있다(FAO, 2000). 한국에서의 참조기는 황해 및 동중국해 해역에서 주로 근해안강망, 기선저인망, 유자망어업에 의하여 주로 어획되고 있다. (중략)