Apablaza Patricia, Frisch Kathleen, Brevik Øyvind Jakobsen, Småge Sverre Bang, Vallestad Camilla, Duesund Henrik, Mendoza Julio, Nylund Are
a Fish Disease Research Group, Department of Biology , University of Bergen , Thormøhlensgate 55, Bergen N-5020 , Norway.
b Cermaq Group AS , Dronning Eufemias Gate 16, Post Office Box 144, Sentrum , Oslo N-0102 , Norway.
J Aquat Anim Health. 2017 Sep;29(3):143-149. doi: 10.1080/08997659.2017.1339643.
This study presents the first isolation of Tenacibaculum maritimum from farmed Atlantic Salmon Salmo salar in Chile. The isolate, designated T. maritimum Ch-2402, was isolated from gills of Atlantic Salmon at a farm located in region X, Los Lagos, Chile, during the harmful algal bloom caused by Pseudochattonella spp. in February 2016. The algal bloom is reported to have caused 40,000 metric tons of mortality in this salmon farming area. The bacterium T. maritimum, which causes tenacibaculosis, is recognized as an important pathogen of marine fish worldwide. Genetic, phylogenetic, and phenotypic characterizations were used to describe the T. maritimum Ch-2402 isolate. The isolate was similar to the type strain of T. maritimum but was genetically unique. Tenacibaculum dicentrarchi isolates were also recovered during sampling from the same farm. Based on the fact that T. maritimum has been shown to cause disease in Atlantic Salmon in other regions, the presence of this bacterium poses a potential risk of disease to fish in the Chilean aquaculture industry. Received November 6, 2016; accepted May 29, 2017.
本研究首次从智利养殖的大西洋鲑鱼（Salmo salar）中分离出海生屈挠杆菌（Tenacibaculum maritimum）。该分离株被命名为海生屈挠杆菌Ch-2402，于2016年2月在智利洛斯拉戈斯地区X的一个养殖场，从大西洋鲑鱼的鳃中分离得到，当时该地区正遭受由伪凯伦藻属（Pseudochattonella spp.）引发的有害藻华。据报道，此次藻华在该鲑鱼养殖区造成了40,000公吨的鱼类死亡。海生屈挠杆菌可引发屈挠杆菌病，是全球公认的海洋鱼类重要病原体。本研究采用基因、系统发育和表型特征分析对海生屈挠杆菌Ch-2402分离株进行了描述。该分离株与海生屈挠杆菌模式菌株相似，但在基因上具有独特性。在同一养殖场的采样过程中，还分离出了石斑鱼屈挠杆菌（Tenacibaculum dicentrarchi）分离株。鉴于海生屈挠杆菌已被证实在其他地区可导致大西洋鲑鱼发病，该细菌的存在对智利水产养殖业中的鱼类构成了潜在的疾病风险。2016年11月6日收到；2017年5月29日接受。
