Jung Sung-Ju, Kim Seok-Ryel, Joung Il-Yong, Kitamura Shin-Ichi, Ceong Hee-Taek, Oh Myung-Joo
Department of Aqualife Medicine, Chonnam National University, Yeosu, Republic of Korea.
J Microbiol. 2008 Jun;46(3):265-73. doi: 10.1007/s12275-008-0004-7. Epub 2008 Jul 5.
Surveys of marine birnavirus (MABV) were undertaken in cultured olive flounder Paralichthys olivaceus from the south and west coastal areas and Jeju in Korea during the period January 1999 to April 2007. MABV was detected in all seasons from the fry, juveniles and adult fish from the areas examined. Evident cytopathic effects of the virus including rounding and cell lysis were observed in chinook salmon embryo (CHSE-214) and rainbow trout gonad (RTG-2) cells, but not in fathead minnow (FHM) and epithelial papilloma of carp (EPC) cells. Nucleotide sequences of the VP2/NS junction region of the Korean isolates showed 97.8% ~ 100% similarity, and they belonged to the same genogroup. Cross neutralization tests with serotype-specific rabbit antisera against MABV strains exhibited a close antigenic relationships between strains, and were distinct from infectious pancreatic necrosis virus (IPNV) strains. Coinfection of MABV with bacteria (Streptococcus iniae, Vibrio spp.) and viruses (nervous necrosis virus, lymphocystis disease virus, viral hemorrhagic septicemia virus) was observed.
1999年1月至2007年4月期间,在韩国南部和西部沿海地区以及济州岛养殖的牙鲆(Paralichthys olivaceus)中开展了海洋双RNA病毒(MABV)调查。在所检测区域的鱼苗、幼鱼和成鱼中,全年各季节均检测到MABV。在奇努克鲑胚胎(CHSE - 214)和虹鳟性腺(RTG - 2)细胞中观察到该病毒明显的细胞病变效应,包括细胞变圆和细胞裂解,但在黑头呆鱼(FHM)和鲤鱼上皮瘤(EPC)细胞中未观察到。韩国分离株VP2/NS连接区的核苷酸序列显示出97.8%至100%的相似性,它们属于同一基因组群。用针对MABV毒株的血清型特异性兔抗血清进行的交叉中和试验表明,各毒株之间存在密切的抗原关系,且与传染性胰腺坏死病毒(IPNV)毒株不同。观察到MABV与细菌(海豚链球菌、弧菌属)和病毒(神经坏死病毒、淋巴囊肿病病毒、病毒性出血性败血症病毒)的混合感染。