• 한국수산과학회지
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• 제50권3호
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• pp.243-249
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• 2017

Crabs are a popular seafood item. However, they can harbor many microorganisms, heavy metals, radioactivity, and benzo(a)pyrene, which are potential health risks to humans. The objective of this study was to assess the potential of swimming crabs for use in foods such as Ganjang-gejang, by measuring their sanitary biological and chemical properties. Viable microbial cell counts in swimming crab samples were $3.4{\times}10^2-6.7{\times}10^4CFU/g$, but no coliform, Escherichia coli, or pathogenic bacteria, such as Vibrio parahaemolyticus, Enterohemorrhagic E. coli, Listeria monocytogenes, Staphylococcus aureus, or Salmonella spp., were detected. Heavy metal concentrations in swimming crab samples were non-detectable to 0.112 mg/kg for total mercury, non-detectable to 0.435 mg/kg for lead, and 0.115-0.836 mg/kg for cadmium. Benzo(a)pyrene concentrations ranged from $0.025-0.060{\mu}g/kg$, and the volatile basic nitrogen content ranged from 8.7-15.6 mg/100 g. No radioactivity was detected in samples. These results suggest that swimming crabs are viable for use in seafood products.

• 한국수산과학회지
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• 제44권5호
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• pp.499-505
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• 2011

The fishing grounds of Korean large-pair trawlers have shifted since exclusive economic zones (EEZs) were established in a fisheries agreement involving countries neighboring Korean waters. The distributions of marine ecosystems and fisheries resources have been changing with environmental changes such as global warming and with the shift in species targeted as a result of changes in fishing technology and fishing gear. This study analyzed variation in the species assemblages caught in Korean waters by large-pair trawlers as a result of these geopolitical and environmental changes. The data used in this study were obtained from the Fishery Production Statistics of Korea and the Port Sample Survey of the National Fisheries Research and Development Institute (NFRDI) from 1990 to 2007. Hierarchical clustering analysis (HCA) and correspondence analysis (CA) were used to explore the characteristics of the catch-species composition. The overall variation in the species composition of the catch of Korean large-pair trawlers showed that the proportions of croaker Johnius grypotus, small yellow croaker Larimichthys polyactis, eel Anguilla japonica, and blue crab Portunus trituberculatus decreased, whereas those of hairtail Trichiurus lepturus, Spanish mackerel Scomberomorus niphonius, anchovy Engraulis japonicus, and common squid Todarodes pacificus increased in Korean waters over the 18-year period. The results of the HCA of the annual catch data by species showed four different distributions of fish species according to year. Results of the CA showed that the species assemblages differed between the 1990s and 2000s.

• 한국수산과학회지
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• 제20권6호
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• pp.591-600
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• 1987

1986년 3월부터 10월 사이에 부산지역을 비롯하여 포항, 충무, 여수, 군산 및 시화만에서 해수 138개 해산물척추동물 102개 시료를 채식하여 시료별, 지역별로 V. vulnificus 분포실태를 조사한 결과는 다음과 같다. 1. 해수 138개 시료 중 31개에서 V. vulnificus가 검출되어 약 $22.5\%$의 검출율을 나타내었으며 외항수보다 내항수에서 검출율이 높았다. 2. 해산물척추동물 102개 시료중 16개중 V. vulnificus가 검출되어 $15.7\%$의 검출율을 나타내었으며 게와 피조개에서 그 검출율이 높았다. 3. 시기별로 수온이 높은 8월에서 10월 사이에 많이 검출되었으며 그 중 9기이 $40\%$의 가장 높은 검출율을 보였다. 4. 지역별로는 염분농도가 낮은 서해안의 군산이 검출율이 가장 높았으며 남해안에서는 부산지역의 광안리와 해운대에서 검출율이 높았다.

• 수산해양기술연구
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• 제53권3호
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• pp.246-255
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• 2017

The species composition and variation in abundance of fishery resources near Oenarodo, Go-heung Peninsula, Korea, were investigated by gill net, trap net, and longline in May, July, and October 2015 and 2016. During the study period, the total catch included 14 species in the gill net, 11 species in the trap net, and 4 species in the longline. The dominant species were Portunus trituberculatus and Raja pulchrain the gill net, Charybdis japonicaand and Octopus vulgarisin in the trap net, and Muraenesox cinereusin in the longline. The Catch Per Unit Effort (CPUE) per individual and per weight in the gill net were similar in May and July of 2015 and 2016. In October 2015, the CPUE per individual was 2.1 ind./h and the CPUE per weight was 505 g/h higher than the results in 2016, but there was no significant difference in the total CPUE between 2015 and 2016. In the trap net, the CPUE per weight was similar in both 2015 and 2016, but the CPUE per individual was 2.7 ind./h higher in October 2015 than in October 2016 and the total CPUE was not significantly different from 2015 to 2016. The CPUE per individual and weight in the longline were significantly higher in July and October 2015 than in the same months of 2016, but the total CPUE in 2015 and 2016 did not show a significant difference.

• 수산해양기술연구
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• 제54권4호
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• pp.306-314
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• 2018

Species composition and seasonal variation of aquatic organism at Baekryeong-do, Korea were investigated using pots in 2016. A total of 42 species, 90,050 individuals and 2,351,666 g of aquatic organism were collected. Among them, there were 12 species and 3,826 individuals of fish, 15 species and 51,237 individuals of crustaceans, 2 species and 54 individuals of cephalopods, 7 species and 33,981 individuals of gastropods, 2 species and 757 individuals of echinodea, 2 species and 187 individuals of shellfish, and 1 species and 8 individuals of holothuroidea. The dominant species in number of individuals were Pagurus ochotensis, Neptunea cuming, Cancer gibbosulus, and Buccinum yokomaruae, which accounted for 70.0% of the total number individuals collected. The dominant species in biomass were Neptunea cuming, Portunus trituberculatus, Cancer gibbosulus, and Pagurus ochotensis, which accounted for 65.3% of the total biomass collected.

• 수산해양기술연구
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• 제60권2호
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• pp.101-113
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• 2024

This study investigated the species composition and community structure of aquatic organisms captured using coastal beam trawling in Gomso Bay, Jeollabuk-do, from January to December 2022. Throughout the experimental period, a total of 20,246 individuals belonging to 94 marine species were captured, with a combined biomass of 602,828 g. Fish exhibited the highest abundance, comprising 56 species, followed by crustacea (21 species), bivalvia (8 species), cephalopoda (5 species), gastropoda (3 species), and holothuroidea (1 species). The dominant species was Leiognathus nuchalis, constituting 14.0% of the total individuals, followed by Portunus trituberculatus at 12.1%, Oratosquilla oratoria at 10.4%, Crangon hakodatei at 9.9%, and Metapenaeus joyneri at 7.9%. The diversity index ranged from 1.72 to 2.55, with the lowest diversity observed in March and the highest in July. Cluster analysis based on species composition of the 27 most common species showed that aquatic organisms were divided into three groups: spring and summer organisms (Group A) and summer organisms (Group B) and autumn and winter organisms (Group C).

• 수산해양기술연구
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• 제26권2호
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• pp.133-142
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• 1990

동지나해의 저서 어업자원에 대한 어획시험 조사연구가 일본의 북해도대학과 부산수산대학교의 공동으로 1989년 11월 5일~11월 12일의 기간 중에 실시되었다. 이 공동 연구는 앞으로 1992년도까지 연 4년간의 조사기간은 설정하고 있으며, 어획시험은 매년 같은 시기 같은 해역의 동일 지점에서 실시할 예정으로 있다. 본 연구에서는 어업자원의 현황과 동태, 지리적인 분포에 대한 기초자료를 얻고자 일본 북해도대학의 연습선 OSHORU-MARU를 이용하여, 한일 공동규제수역 밖의 동지나해 북부 해역에서 1일 3회 총 24회의 트로올 조업을 행하였고, 그 결과를 분석하였다. 1. 조업해역의 수심은 51~132m, 예망수층의 수온은 8~21$^{\circ}C$의 범위에 있었고, 예망 중의 망고는 4.5m, 오터 보오드의 간격은 80m 정도였다. 2. 총 24회의 조업에서 어류 76종, 오징어 문어류 6종, 게, 새우류 7종을 어획하였으며, 이들중 홍어류, 달고기, 민어, 민강달이, 황돔, 전갱이류, 병치매가리, 갈치, 삼치, 병어, 덕대, 샛돔, 꼼치, 말쥐치, 살오징어, 칼오징어, 꽃게는 어획량이나 개체수가 비교적 많았다. 3. 주요 어종들에 대하여 어획 해역별로 체장 계급별로 미수분포를 보면, 갈치, 병어, 말쥐치는 해역에 따라 체장의 모드가 다른 어군이 별개로 어획이 되고 있으며, 살오징어, 칼오징어, 꽃게로는 같은 해역에서 성장단계가 상이한 2개 이상의 군이 혼획되는 것으로 보인다. 4. 특히, 갈치, 병어는 대.소형어가 분리 어획되고 있으나, 살오징어, 칼오징어, 꽃게 등은 같은 어장에서 대.소형어가 혼획되고 있으므로 소형어의 난획 방지를 위한 방책이 필요한 것으로 본다., 각각의 핑거를 식별, 추적할 수 있었다.는 경도방향의 해구수가 많았으며, 특히 8월은 1년중 경도방향의 분산이 가장 컸고, 어장중심은 5월에는 3888해구, 6월에는 3884해구, 7월에는 4078해구, 8월에는 4154해구, 9월에는 4146해구, 10월에는 4044해구였다. 3. 어획수온과 어획적수온은 5월에는 $14.0~18.5^{\circ}C,$ $15.0~16.0^{\circ}C,$ 6월에는 $13.5~18.5^{\circ}C,$ $14.5~16.0^{\circ}C,$ 7월에는 $14.0~20.0^{\circ}C,$ $14.5^{\circ}C,$ $19.0^{\circ}C,$ 8월에는 $16.0~21.5^{\circ}C,$ $18.0~20.0^{\circ}C,$ 9월에는 $14.5~22.0^{\circ}C,$ $17.0~18.5^{\circ}C,$ 10월 $14.0~18.0^{\circ}C,$ $16.0~17.0^{\circ}C였다.$ 4. 평균CPUE는 5월에는 3.2kg/sheet, 6월에는 4.5kg/sheet, 7월에는 4.3kg/sheet, 8월에는 5.1kg/sheet, 9월에는 6.4kg/sheet, 10월에는 5.8kg/sheet였다. 5. 한국정부의 1990년 북태평양 오징어 어업감시계획과 실제의 어장형성범위를 비교하면 5월에는 어장이 형성된 21개 해구 가운데 12개, 6월에는 24개 가운데 7개, 7월에는 25개 가운데

• 수산해양기술연구
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• 제44권3호
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• pp.174-183
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• 2008

In order to develop the substitutive materials for natural baits of swimming crab pots, the fluorescent characteristics of the baits were analyzed, and the preference of fluorescent dyes were investigated by the mean entrapped catch number to the pots through the water tank experiments and fishing experiments. On the investigation of fluorescent characteristics by the 5 kinds of baits, mackerel, krill, manila clam, pig's fat and chicken's head which were used in substitutive baits for test in the UV long wave(365nm) area, it showed clear blue fluorescence in the skin of mackerel, shell of krill, manila clam and bill of chicken's head, and green fluorescence in the mackerel s muscle and internals, and yellow fluorescence in the pig's fat and chicken's head. On the investigation of fluorescent characteristics by the bait cages in the UV short wave(254nm) and long wave(365nm) area, it showed each green, red and blue fluorescence in the cylinderical or hexahedral red plastic bait cages which were painted each green, red and blue fluorescence dyes, but it showed yellowish green flourescence in the cylinderical or hexahedral red plastic bait cage which was painted yellow fluorescent dye. On the preference investigation of the fluorescent dyes of swimming crabs by the 5 kinds of the bait cages which were put the mackerel in the non-fluorescent red plastic cage($RF_N$), red, yellow, green and blue fluorescent plastic cages(RF, YF, GF, BF) each, nonfluorescent red plastic cage($RF_N$) was entrapped mean 2.0(6.7%), but blue fluorescent plastic cage(BF) was mean 5.0(16.7%) and it was more 2.5 times comparing to $RF_N$, and red fluorescent cage(RF) was same level and green fluorescent cage(GF) was 50% of catch number comparing to $RF_N$, and yellow fluorescent cage(YF) was entrapped nothing(F 46.324, P < 0.05). On the investigation of the entrapped catch number to the pots which were put the mackerel in the blue fluorescent hexahedral plastic cage(HP) and blue fluorescent silicon mackerel model cage(SM), HP was mean 3.4(11.3%) and it was a little more comparing to SM which was entrapped mean 3.2(10.7%)(t 0.775, P > 0.05). Fishing experiments on the preference investigation of swimming crabs by the pots which were put in the non-fluorescent red plastic cage($RF_N$) and blue fluorescent plastic cage(BF) were conducted 3 times. Mean catching number and weight of $RF_N$ were 71.7 ind.(18.3%) and 16.9kg(64.3%), and those of BF were 93.0 ind.(23.1%) and 19.8kg(64.5%), respectively.

• 한국수산과학회지
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• 제25권1호
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• pp.45-50
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• 1992

폐기되고 있는 수산부산물을 유효하게 이용하여 식품산업의 학술적 자료를 얻을 목적으로 6종의 갑각류의 갑각을 회수하여 키틴, 키토산 및 미세결정화키틴을 제조하여 이들 성간의 기능특성에 대해 검토하였다. 제조된 키틴, 키토산 및 미세결정화키틴들의 겉보기체적, 수중침정체적, 보수력 및 지방흡수력은 각각 $3.1\pm0.1-27.0\pm0.2ml/g,\;5.1\pm0.1-45.0\pm0.2ml/g,\;318\pm40-2,382\pm12g/100g$ 및 $235\pm20-2,169\pm20g/100g$의 범위였고 크릴껍질로 만든 키틴과 키토산의 겉보기체적, 수중침정체적, 보수력 및 지방흡수력이 가장 컸다 키틴과 키토산은 유화성이 없었고 미세결정화키틴만이 유화성이 있었다. 5종의 미세결정화키틴의 유화성은 $18.2\pm4.0-50.1\pm2.5\%$, 유화 안정성은 $15.2\pm3.5-31.1\pm1.0\%$의 범위였다. 색소흡착능은 붉은대게의 각피로 제조된 미세결정화키틴이 가장 좋았다.

• 수산해양기술연구
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• 제38권3호
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• pp.241-248
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• 2002

황해, 동중국 해역에서 서식하는 어업생물 자원의 평가 및 그 관리에 필요한 기초 자료를 수집하기 위한 시도로서, 1997 년도에 부경대학교와 일본 장기대학이 공동으로 실시한 어업자원조사중에서 주로 계량어군탐지기를 이용하여 수집한 자료를 분석, 고찰한 결과를 요약하면 다음과 같다. 1 황해, 동중국해에 설정한 9개의 조사정점에서 저층트롤에 의한 어획량은 7.7~182.48 kg/hour이었고, 그때 어획된 어종수는 7~34 종이었다. 2. 1997년 5월에 동중국해에 있어서의 어군의 분포는 황해 중부의 저층 냉수역과 동중국해 중앙해역의 저층 고온수역, 또 쿠로시오계의 난류와 황해 냉수 및 대륙 연안수의 사이에 형성된 제주도 남부의 전선역에서 그 어군도가 매우 높았다. 3. 황해, 동중국해의 조사대상해역의 전수층부와 저층부에 대한 어군의 평균 체적산란강도는 각각 -74.57 ㏈, -68.24 ㏈로서 저층부가 전수층부에 비해 5.67 ㏈ 더 높았다. 4. 본 연구의 조사대상해역에 대한 어군의 분포밀도를 추정한 결과, 전수층에 대해서는 6.65$\times$$10^{-5}$ kg/㎥이었고, 저층부에 있어서는 2.86$\times$$10^{-4}$ kg/㎥이었다.