• 무역상무연구
• /
• 제22권
• /
• pp.227-254
• /
• 2004

This paper focuses on the analysis of effects on fisheries sector following Korea-Japan Free Trade Agreement and the results are found as follows. In terms of national competitiveness, the RCA(Revealed comparative advantage) index shows that Korea is higher than Japan in most species items. And the calculation of TSI(Trade Specialization Index) finds that Korea is export specialized while Japan import specialized, showing that Korean fisheries sector is internationally more competitive than Japan. The tariffs on the marine products should be completely scrapped between Korea and Japan, export of marine products to Japan increases a mere 2%, while import from Japan 13.5%. In terms of value, annual export to Japan stands at 20,135thousand USD, while import from Japan at 12,137thousands USD, resulting in trade balance improvement of 8,000thousand USD in total. The tariff measures above is expected to have a positive effect on the related industry of marine products such as Oyster, Conger eel, Ark shells and Laver, but those involved in fisheries of Alaska pollack, Hair tail, Sea-bream(live fish), Red horsehead(frozen), Saury are expected to be negatively affected. Given the results of analysis above, the effects of FTA on the fisheries would be advantageous to Korea as a whole, but at the same time, the advantage and disadvantage sustained differs by fishery type and marine products. To that effect, negotiation strategies and countermeasures should be made, taking the results into account.

• 한국어류학회지
• /
• 제18권3호
• /
• pp.216-222
• /
• 2006

2004년 1월부터 12월까지 부산 주변해역에서 채집된 참돔의 식성을 조사하였다. 참돔의 체장분포는 8.5~44.6 cm SL의 범위였다. 참돔의 주요 먹이생물은 집게류 (Anomura), 단각류 (Amphipoda), 게류 (Brachyura), 새우류 (Caridea), 갯지렁이류 (Polychaeta), 극피동물 (Echinodermata), 어류(Pisces) 등 매우 다양했다. 그 외, 복족류(Gastropoda), 이매패류(Bivalvia), 갯가재류(Stomatopoda), 두족류(Cephalopoda) 자포동물(Cnidaria), 등각류(Isopoda) 등도 소량 섭이하였다. 참돔은 성장함에 따라 먹이생물 조성에 있어 변화를 보였는데, 체장 8~15 cm SL에서 새우류의 점유율이 높았으며, 15~25 cm SL에서는 집게류와 갯지렁이류의 점유율이 높았다. 그리고 25 cm SL 이상에서는 극피동물류와 어류의 점유율이 높게 나타났다.

• 한국수산과학회지
• /
• 제32권4호
• /
• pp.458-465
• /
• 1999

Distribution of the proteolytic activities of crude pretense extracted from the viscera of ten kinds of fish was examined. Their proteolytic activities on proteinous substrates (azocasein, hemoglobin, and casein) from the viscera of anchovy, bastard flatfish, mackerel and red sea bream were higher than those of other fishes, and the crude pretenses were further fractoinated with acetone or ammonium sulfate. Optimum concentrations for pretenses fractionation were $0\~55\%$ for acetone and $30\~70\%$ for ammonium sulfate. The fractionated viscera pretense of mackerel showed the highest proteolytic activity among four kinds of fishes. Activities of cathepsin D- and pepsin-like enzymes at pH 3.0, cathepsin L-, B-, H- and G-like enzyme at pH 6,0, and Hypsin- and chymotrypsin- like enzymes (pH 8.0) were detected in the fractionated viscera pretense, whereas activities of cathepsin L- and chymoeypsin-like enzyme were observed in commercial pretenses. Proteolytic activities of Alcalase, Protamex, and Aroase AP-10 for azocasein were slightly higher than the fractionated viscera pretenses, but their amidolytic activities at pH 6.0 and 8.0 toward synthetic substrates were lower than counterpart. The fractionated pretenses from fish viscera would be utilized as commercial pretenses.

• 한국어병학회지
• /
• 제18권2호
• /
• pp.133-146
• /
• 2005

본 연구에서는 2002년에서 2004년간 우리 나라 해수 어류 양식장에서 분리되는 세균 중 비브리오 속에 속하는 세균의 종 조성을 조사하였다. 질병의 증상을 보이는 어류로부터 166개의 비브리오속 세균 균주를 수집하였으며, 이들 균주는 넙치 (133 균주), 조피볼락 (8 균주), 참돔 (6 균주), 대하 (5 균주), 감성돔 (4 균주), 전복 (3 균주) 및 기타 해수 어류 (7 균주) 등에서 분리한 균주를 대상으로 하였다. 모든 분리 균주에 대하여 각종 생화학적 성상을 조사하고 그 특성에 따라 분리 균주를 구분하였다. 각 생화화적 성상 group에서 대표 균주를 선정하여 16S rRNA 및 16S-23S rRNA 유전자 서열을 분석하고 이들 결과를 종합하여 분리 균주을 동정하였다. 그 결과 14종 이상의 비브리오 종으로 동정할 수 있었으며, 그 종 조성은 V. ichthyoenteri (45 strains), V. alginolyticus (34 strains), V. harveyi (32 strains), Ph. damselae subsp. damselae (Formerly V. damsela, 10 strains), V. campbellii (6 strains), V. costicola-like (6 strains), V. fisheri (5 stains), V. fluvialis (4 strains) 및 Vibrio spp. (24 strains) 등이었다.

• 한국수산과학회지
• /
• 제38권6호
• /
• pp.365-371
• /
• 2005

The antimicrobial resistance patterns to the 10 antimicrobial agents of potential pathogenic vibrios isolated from seawater and a variety of farmed fishes, including oliver flounder (Payalichthys olivaceus), black rock fish (Sebastes schlegeli), red sea bream (Pagyus major) and sea bass (Lateolabyax japonicus), were investigated from May to October, 2004. A total of 314 strains of the genus vibrios were isolated from 126 collected samples, and the number of isolated strains of Vibrio payahaemolyticus and Vibrio alginolyticus were 194 and 120, respectively. Apparently $98.5\%$ of V. parahaemolyticus and $100\%$ of V. alginolyticus isolates demonstrated antimicrobial resistance against at least one antimicrobial agent. The resistance of V. parahaernolyticus isolates to ampicillin ($97.9\%$) was highest, followed by oxolinic acid ($26.8\%$), amikacin ($19.1\%$) and tetracycline and amoxicillin/clavulanic acid ($6.7\%$). V. alginolyticus isolates were resistant to ampicillin ($100\%$), solfamethoxazoleit,imethopenem ($25\%$), amikacln ($21.7\%$), amoxicillin/clavulanic acid ($15.8\%$), ciprofloxacin ($13.3\%$), and tetracycline and doxycycline ($11.7\%$). The rate of multiple antimicrobial resistance to at least four antimicrobials was higher in the V. alginolyticus isolates ($20.8\%$) than in the V. parahaemolyticus ($6.7\%$).

• 수산해양교육연구
• /
• 제17권3호
• /
• pp.413-426
• /
• 2005

The objective of this study consists of facilitating seafood consumption by increasing its intake opportunities for consumer through analysis of sliced raw fish. A study on sliced raw fish consumption was conducted on 630 citizens of Busan(252 men and 378 women), attending high school and university, and employedas housekeepers and salaried employees. The goal of the study was to assess the attitude and degree of satisfaction obtained from eating sliced raw fish and ultimately to promote greater seafood consumption. A self-administered questionnaire was used to record the results. The results were as follows : About sixty percent of the respondents appeared to like or not to be reluctant to eating sliced raw fish. The main reasons for favoring sliced raw fish were its taste and nutritious effects. All ages liked sliced raw fish, but teenaged women, on average, tend to dislike sliced raw fish. The most preferred sliced raw fish was flounder. Most of the panelists preferred korean rock fish, and red sea bream due to their ordinary muscle. Sliced raw fish of the 2nd and 3rd variety were the most popular. For most of the sliced raw fish, the own-price elasticity came out to be relatively low. This can be explained by the fact that sliced raw fish is characteristically purchased based more on quality and freshness, than on price. SINGSINGWHE(SSW)-fresh sliced raw fish should be stored at 0$^{\circ}C$ for no longer than 10hrs. Taste, nutritional value and low price have the potential to promote the consumption of seafood. Factors which can reduce the consumption of sliced raw fish were safety due to Vibrio septicemia, rainy day, indistinct origin, and high rices. To promote sliced raw fish consumption, the subjects recommended the quality improvement and low price.

• 한국어병학회지
• /
• 제26권3호
• /
• pp.163-171
• /
• 2013

PCR (polymerase chain reaction) 법은 신속하고 정확하여 바이러스성 질병진단을 위해 널리 사용되지만 조직병리학적인 정보를 제공하지 못한다. 반면에 in-situ hybridization (ISH) 법을 사용하면 바이러스를 빠르게 검출할 수 있을 뿐 아니라 조직에서의 분포도 알 수 있다. 본 연구에서는 RSIV, VHSV, 그리고 VNN 바이러스들의 조직내 분포 및 조직 병리학적인 특성을 확인하기 위하여 이 바이러스들에 감염된 에 감염된 양식 넙치의 어류의 다양한 조직들을 대상으로 ISH 법을 적용하였다. 그 결과 이들 세 종류의 바이러스가 각각 다른 조직 및 세포들에 감염함을 확인 할 수 있었다. 본 연구 결과는 ISH법이 어류 병원성 바이러스의 신속 검출 뿐 아니라 조직 병리학적인 특성 확인에도 유용함을 제시한다.

• 생명과학회지
• /
• 제25권1호
• /
• pp.16-20
• /
• 2015

참돔과 감성돔은 우리나라 주변에 서식하는 고유 어종으로, 참돔의 암컷과 감성돔의 수컷을 이용한 인공수정에 의하여 잡종은 생산되었으나, 자연 상태에서는 이들 간의 잡종이 보고된 바 없다. 이들 두 어종의 암수 및 타 어종을 섞어서 대형 수조에서 사육하는 과정에서 생산된 수정란을 회수하여 부화시켜 육성하는 과정에서 이들 두 종간의 잡종의 형태를 보이는 개체들이 관찰되었다. 임의로 96개체를 선택하여 두 종에 모두 적용할 수 있는 microsatellite marker를 이용하여 유전학적 분석을 실시한 결과 96개체 중 두 종의 혼합된 형태적 특징을 보이는 15개체는 참돔 암컷과 감성돔 수컷 간의 잡종으로 판명되었으며, 나머지 81개체는 감성돔 치어로 확인되었다. 사육 수조의 크기가 매우 컸으며 다른 어류들도 함께 들어 있었다는 점과, 이와 같이 유전적으로 구분되는 두 종 간의 잡종이 자연상태와 유사한 환경에서 생산되었다는 점을 고려할 때 본 연구의 결과는 자연 상태에서도 인위적인 영향이나 기후 변화에 의하여 이들의 서식지가 중복될 경우 두 종간의 잡종이 생산될 가능성이 있다는 것을 시사한다.

• 수산해양기술연구
• /
• 제42권2호
• /
• pp.69-77
• /
• 2006

The aim of this study was to develope a fishing technology for fisheries management for improving the survival rate of young fishes escaped from trawl net. Sea experiments were carried out to investigate the survival rate of the fishes in off Geomun island and Korean southern sea. Cover-net fish cage was designed and manufactured to collect fishes escaped from COD(codend) and TED(trawl escapement device). Fish cage was installed in a shallow site where scuba diver can observe the surviving fishes after separating the cage from trawl net. Most of fishes except horse mackerel(Trachurus japonicus) and mackerel(Scomber japonicus) could escaped through TED(bar space 35mm) easier than COD(mesh size 54mm). Especially, escapement rate of redlip croaker(Pseudosciaena polyactis) escaped from TED was the highest as 73.9%. Survival rate of horse mackerel(Trachurus japonicus) escaped from TED was 85.5% at the point of 96 hours over, while the survival rate for COD showed a rapid decrease according to the time elapse as 85.0% at the point of 24 hours, 76.4% for 48 hours, 62.7% for 72 hours and 56.1% for 96 hours. Over 90% of red seabream(Pagrus major) and rock bream(Oplegnathus fasciatus) escaped from TED were survived 96 hours over and the survival rate of those fishes were excellent compared with the other fish species. All korean pomfret(Pampus echinogaster) escaped from both COD and TED were died within 48 hours. Most of redlip croaker(Pseudosciaena polyactis) were also died within 12 hours because of the weak physiological characteristics by water pressure change. Survival rate of fishes like as horse mackerel(Trachurus japonicus) having hard skin was high while it was low for the fishes like as squid(Todarodes pacificus) and hair-tail(Trichiurus lepturus) having soft skin. We could know that there were big differences in the survival rate offish species escaped from trawl net.

• 한국수산과학회지
• /
• 제43권1호
• /
• pp.12-17
• /
• 2010

Wild and cultured fish including olive flounder, sea bass, rock bream, yellowtail, gray mullet, gizzard shad, black rockfish, red seabream and squid were collected from a fish market located on the coast of Korea, and the antibiotic content of their muscle was investigated. Tetracycline group antibiotics were not detected in the 108 individuals of 9 species of wild fish. However, oxytetracycline (OTC) and tetracycline(TC) were detected in some samples of the 111 individuals in 7 cultured live fish species. The detected ranges of OTC and TC were ND~ 0.06 and ND~ 0.03, respectively. Five different fluoroquinolone antibiotics were also tested for, but were not detected in the wild fish species. Only small amount of criprofloxacin(ND~0.029 mg/kg) were detected in a few cultured fish samples. Oxolinic acid was not detected in either wild and cultured fish samples. Results showed that even very low levels of antibiotics could be detected by the testing methods used. Antibiotics were identified in a few fish samples but levels were far below the maximum allowable limits of the Korean Food Code, and the safety of fish being sold in markets, with regard to antibiotic levels, was confirmed.