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서장우 ( Jang Woo Seo ),박명애 ( Myoung Ae Park ),최동림 ( Dong Lim Choi ),김진우 ( Jin Woo Kim ),조미영 ( Mi Young Cho ),박경현 ( Kyung Hyun Park ),정현도 ( Hyun Do Jeong ),오명주 ( Myung Joo Oh ) 한국어병학회 2010 한국어병학회지 Vol.23 No.1
수산동물의 질병 발생과 확산을 억제하기 위하여 제정된 수산동물질병관리법은 2008년 12월 22일 시행되었다. 수산동물의 질병 발생과 확산을 억제하기 위하여 위험분석이 새롭게 도입되었다. 수산동물의 이동에 대한 위험분석의 도입은 세계무역기구의 SPS 협정의 권고사항의 이행과 관련이 있으며, 세계동물보건기구의 수산동물위생규정의 지침에 의거하여 수행되어져야 한다. 이 보고서는 수산동물의 이동에 대한 국제규정과 국내의 위험분석 제반여건을 수집하여 분석하였다. Aquatic animal diseases control act which is to assure the prevention of outbreak and spread of aquatic animal diseases in Korea has come into effect since 22 December 2008. In order to prevent outbreak and spread of aquatic animal diseases, risk analysis is newly introduced. The introduction of risk analysis for movement of aquatic animals related to implementation of recommendation of the World Trade Organization (WTO) Agreement on the Application of Sanitary and Phytosanitary Measures and should be conducted in accordance with guidelines of OIE Aquatic Animal Health Code. This report involves gathering and analysing the information of international regulation and situations of risk analysis framework in Korea for movement of aquatic animals.
다시마(Saccharina japonica) 배우체의 미동정 진균증
정하나 ( Ha-na Jeong ),오명주 ( Myung-joo Oh ),최성제 ( Sung-je Choi ),서정수 ( Jung-soo Seo ),박명애 ( Myoung-ae Park ),김위식 ( Wi-sik Kim ) 한국수산과학회 2017 한국수산과학회지 Vol.50 No.2
In 2015, white cottony tufts were observed on gametophytes of the kelp Saccharina japonica. Wet mount and histopathology examination revealed numerous fungal hyphae and mycelium around the gametophytes. The gametophytes surrounded by fungal hyphae were generally round and empty. A specific 610-bp fragment of the internal transcribed spacer (ITS)-5.8S rDNA-ITS gene of fungi was amplified by polymerase chain reaction and the nucleotide sequence showed 100% identity with those of Acremonium sclerotigenum, Acremonium sp. and Ascomycota sp. When fungus-infected gametophytes were mixed with healthy gametophytes, a high transmission rate (100%) resulted. This is the first report of mycosis of gametophytes in Korea.
기후변화에 기인한 연안 수온상승에 따른 연안 어류의 바이러스성 질병 발생 예측
김위식 ( Wi Sik Kim ),김석렬 ( Seok Ryel Kim ),박명애 ( Myoung Ae Park ),이준수 ( Joon Soo Lee ),사티샤에분제 ( Satheesha Avunje ),김도형 ( Do Hyung Kim ),오명주 ( Myung Joo Oh ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.5
The impact of global warming on aquatic systems has been a priority research area in the past decade. However, the possibility that increased temperatures will cause shifts in viral disease outbreaks has not been well addressed. In the present study, with increasing water temperature (WT) in the coastal area of Korea, we estimated the possibility of changes in fish viral diseases. From the present time, WT may rise between 0.62 and 1.7 ℃ by 2050, and the effect on aquaculture could be more adverse than benefitial. Red seabream iridovirus disease (RSIVD) and viral nervous necrosis (VNN) cause high mortality above 22 and 24 ℃, respectively, and outbreaks could commence earlier and persist for prolonged periods. Nevertheless, the period of occurrence of viral hemorrhagic septicemia (VHS), which outbreaks at a lower WT (<18℃), could be shorter than the current infectious period. Thermal stress in fish causes reductions in growth and immunocompetence; thus, increases in summer WT can lead to the development of new viral diseases. WT has a strong influence on fish population dynamics; therefore, entry of new viruses and changes in the prevalence of infection can be expected if carrier fishes are introduced or migrate to Korean waters.
서장우 ( Jang Woo Seo ),조미영 ( Mi Young Cho ),김진우 ( Jin Woo Kim ),박경현 ( Gyeong Hyun Park ),지보영 ( Bo Young Jee ),최동림 ( Dong Lim Choi ),박명애 ( Myoung Ae Park ),오명주 ( Myung Joo Oh ) 한국어병학회 2010 한국어병학회지 Vol.23 No.1
농림수산식품부와 국립수산과학원에서는 2009년도 방류 품종 (해면 품종 22종과 내수면 품종 11품종)을 대상으로 수산동물전염병의 감염 여부를 검사하였다. 총 12개 지방자치단체에서 방류를 실시한 것으로 나타났으며, 이 중에서 경상남도, 전라남도, 제주도 및 충청남도는 해면품종을 주로 방류하였으며, 경기도, 전라북도 및 충청북도는 내수면 품종을 많이 방류하는 것으로 나타났다. 검사품종중에서 해산품종으로는 전복이 24.5%로 가장 많았으며, 그 다음 해삼 (15.2%), 넙치 (11.5%), 감성돔과 조피볼락 (6.8%), 꽃게 (5.6%), 돌돔 (5.1%), 볼락 (4.6%), 붉은쏨뱅이 (4.5%)로 나타났다. 내수면 품종 중에서는 붕어가 19.4%로 가장 많았으며, 그 다음으로 뱀장어 (17.0%), 동자개 (12.3%), 다슬기 (12.0%), 메기 (8.4)의 순으로 검사 실적이 많았다. 총 33종의 품종을 대상으로 1,080회의 검사가 의뢰되었으며, 검사항목별로 2,066건의 검사를 실시한 결과 19건에서 red sea bream iridovirus (RSIV), koi herpesvirus (KHV) 또는 white spot syndrome virus (WSSV)와 같은 병원체가 검출되어 불합격 처리되었다. Ministry of Agriculture, Fisheries and Food (MAFF) and National Fisheries Research and Development Institute (NFRDI) have inspected the hatchery-reared seeds of 22 marine species and 11 freshwater species for aquatic animal diseases in stock enhancement program in 2009. Results showed that total 12 local self-governments have been restocking the sea with cultured juveniles. Gyeongsangnam-do, Jeollanam-do, Jejudo and Chungcheongnam-do have a preference for marine species seeds to freshwater species. On the contrary, freshwater species were released mostly in Gyeonggi-do, Jeollabuk-do and Chungcheongbuk-do. In the marine species group, abalone was the most abundant as (24.5%, and then sea cucumber (15.2%), olive flounder (11.5%), swimming crab (5.6%), black sea bream and rockfish (6.8%), rock bream (5.1%), black rockfish (4.6%) and scorpionfish (4.5%) were followed. Crucian carp was the most abundant as 19.4%, and then eel (17.0%), Korean bullhead (12.3%), melanian snail (12.0%), catfish (8.4%) were followed in the freshwater species group. The total number of inspection cases in this study were 1,080 and disqualification cases were 19 by detection of aquatic animals pathogens such as red sea bream iridovirus (RSIV), koi herpesvirus (KHV) or white spot syndrome virus (WSSV).
저수온기 양식 조피볼락, Sebastes schlegeli 간에 대한 조직병리학적 연구
최혜승 ( Hye Sung Choi ),허민도 ( Min Do Huh ),이무근 ( Mu Kun Lee ),최희정 ( Hee Jung Choi ),박명애 ( Myung Ae Park ) 한국어병학회 2011 한국어병학회지 Vol.24 No.3
This study was aimed to determine the fish physical status according to the gross and histopathological findings of liver in cultured black rock fish, Sebastes schlegeli. All 47 fish submitted had no marked abnormalities in the external findings. 42.55% of fish showed normal liver, 25.53% yellow liver, 25.53% atrophic brown liver, 4.26% yellowish-green liver and 2.13% fatty liver in gross examination. Grossly normal liver showed no remarkable change in lobular structure but many vacuoles were found in hepatic cell. Hepatic cells took normal roundish, polygonal shapes containing spherical nuclei. In group of yellow-brown liver, many brown pigments were seen in hepatic cells, MMCs and brown-colored hyaline droplets within cytoplasm of hepatocytes. Yellowish green pigments were seen in hepatic cells and MMCs of yellow green liver and green colored hyaline droplets within hepatocytes. The dilated central veins are highlighted with atrophy of hepatic cells. Outline of atrophic hepatocyte became ambiguous and nucleus frequently become small and pyknotic. Fatty liver showed prominent vacuolar structures in cells as clear spaces or foamy cytoplasm with degenerative nuclei. From these results, it was strongly suggested that hepatic gross and histological findings could be used as important and critical health parameters of fish prior to progression to substantial manifestation as clinical disease.
김위식 ( Wi Sik Kim ),장민석 ( Min Seok Jang ),정성주 ( Sung Ju Jung ),김석렬 ( Seok Ryel Kim ),박명애 ( Myoung Ae Park ),이정호 ( Jeong Ho Lee ),명정인 ( Jeong In Myeong ),오명주 ( Myung Joo Oh ) 한국어병학회 2011 한국어병학회지 Vol.24 No.1
The specific antibody response of olive flounder, Paralichthys olivaceus to different water temperature were tested by enzyme-linked immunosorbent assay (ELISA). In the rearing temperature of 15℃, first anti-bovine serum albumin (BSA) antibody titer was appeared after 14 days of immunization, whereas 24∼48 days post-immunization (PI) resulted maximum antibody titer in all 5 experimental fish with optical density (OD) values 1.94∼3.04. At the end of the experiment (84 days), 0.03∼1.28 OD values were observed. In the rearing temperature of 12∼13℃, first antibody titer was found 28 days PI in 2 out of 5 fish. Three fish shown high OD titer (1.88∼2.68) between 56 and 70 days and OD values of 0.49 to 2.35 were observed at 84 days. However, the anti-BSA antibodies of two fish showed less than 0.8 OD values until 84 days. In the rearing temperature of 10℃, specific antibody appeared at 56 days, maximum antibody titer was observed at 70 days in 2 out of 5 fish (OD values: 1.37∼1.53) and 1.00 to 1.11 OD values were observed at 84 days. Rest 3 fish showed OD values of 0.12 to 0.68 much below to that of other 2 fish, throughout the experimental period. In conclusion, specific antibody response of olive flounder at high temperature was much faster, higher and longer than that at lower temperature.