인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
This study reports the first isolation and polyphasic characterization of Aeromonas salmonicida subsp. salmonicida (ASS) from cultured Chinook salmon (Oncorhynchus tshawytscha) in South Korea. Diseased fish exhibited typical signs of furunculosis, including cutaneous and anal hemorrhage, splenic ulceration, and systemic inflammation across major organs. Five bacterial isolates were identified as typical ASS by 16S rRNA and vapA gene sequencing and clustered with ASS reference strains in the phylogenetic analysis. All 13 virulence- and metabolism-related genes tested (aerA, act, hlyA, exsA, carB, lon, gmhA, fur, rfbA, dctA, mglA, rpoS, and purD) were detected in isolates ASS-2 to ASS-5, whereas exsA was absent in ASS-1, indicating substantial pathogenic potential for host colonization and systemic infection. Broth microdilution testing revealed phenotypic variation in antimicrobial susceptibility; ASS-2, ASS-3, and ASS-4 were resistant to oxolinic acid (≥4 μg/mL) and oxytetracycline (≥8 μg/mL), whereas ASS- 1 remained susceptible to most agents tested. These findings confirm the natural occurrence of virulent, antimicrobial-resistant ASS in Chinook salmon aquaculture in South Korea, highlighting the need for active disease monitoring and prudent antimicrobial management.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.