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우리나라 양식 자주복, Takifugu rubripes (Temminck & Schlegel, 1850)에서 발생한 Vibrio atlanticus의 첫 감염 사례 보고
이남실,조미영,정승희,원경미,Lee, Nam-Sil,Cho, Miyoung,Jung, Sung-hee,Won, Kyoungmi 한국어병학회 2018 한국어병학회지 Vol.31 No.2
본 연구는 육상 순환 양식장, 약 $20^{\circ}C$의 수온에서 양식 중이던 자주복에서 체표에 백탁과 궤양을 보이는 개체가 다수 발생하여 그 원인을 밝히고자 하였다. TCBS 선택배지에서 순수 배양된 균체를 확인하고 계대 배양하여 16S rRNA와 rpoA 유전자의 염기서열 분석을 실시하였으며, 그 결과는 Vibrio atlanticus와 99.77%의 상동성을 가지는 것으로 나타났다. 생화학적 특징을 이미 보고된 같은 균종과 비교한 결과, Voges-Proskauer test와 Gelatin 가수분해능에 대한 결과에서 차이를 나타내는 것으로 확인하였다. A case of disease was occurred in tiger puffer, Takifugu rubripes, reared in circulated system (water temperature was about $20^{\circ}C$) on land in Korea. Diseased fish showed a unique external sign, the cloudy skin ulcer in various sizes. We investigated the cause of disease, and isolated one pure cultured bacterium, TP01. This had 99.7% homology with Vibrio atlanticus by sequence analysis of the 16S rRNA and rpoA genes. TP01 showed some differences with other reported V. atlanticus strains in the biochemical characteristics as like Voges-Proskauer test and gelatin hydrolysis.
분자학적, 형태학적 방법을 통한 넙치(Paralichthys olivaceus) 근육에서의 Kudoa septempunctata 감염형태의 변화 관찰
이남실(Nam-Sil LEE),도정완(Jeong-Wan DO),김명석(Myoung Sug KIM),원경미(Kyoungmi WON),조미영(Miyoung CHO),정승희(Sung-Hee JUNG) 한국수산해양교육학회 2019 水産海洋敎育硏究 Vol.31 No.1
This is study about trend of infection form of Kudoa septempunctata in cultured olive flounder (Paralichthys olivaceus). We performed two times of survey (from May 2016 to February 2017 and from May 2017 to September 2017) using PCR method and microscopic method. PCR positive samples had been constantly detected during the survey period, and the prevalence season was from July to October in 2016. However, spore was not detected with microscopic method from May to July, and it had been observed from September 2016 in the 1st survey. These trends are similar in the 2nd survey. In the histopathological examination, partial necrosis of muscle bundle and clump of macrophage around vessel were major findings in muscle tissue that revealed positive result at PCR method only. Moreover, various forms of plasmodial cells were examined from ISH (in-situ hybridization) reaction against muscle tissue that had not K. septempunctata spores.