Intracellular infection with Spironucleus barkhanus (Diplomonadida: Hexamitidae) in farmed Arctic char Salvelinus alpinus
Intracellular infection with Spironucleus barkhanus (Diplomonadida: Hexamitidae) in farmed Arctic char Salvelinus alpinus
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DOI：
10.3354/dao056155
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发表时间：
2003-09-24
影响因子：
1.4
通讯作者：
Borno, G
中科院分区：
文献类型：
--
作者：
Sterud, E;Poppe, T;Borno, G
本文报道了一个北极红点鲑（Salvelinus alpinus）细胞内系统感染巴氏螺旋体（Spironucleus barkhanus）的病例。寄生虫广泛散布在整个脉管系统和大多数器官中。在肝、脾和头肾毛细血管和血窦中被视为宿主细胞的明确结构内观察到寄生虫聚集体。螺核菌属的细胞内感染。以前从未报道过。受影响农场的感染率和死亡率较低。与养殖大西洋鲑鱼的系统性螺旋体核增多症相反，尽管脉管系统中有大量的鞭毛虫，但器官组织明显不受影响。相对较少的肉眼和组织病理学病变可能表明，北极红点鲑比大西洋鲑鱼更耐受这种寄生虫。
A case of intracellular systemic infection with the diplomonad flagellate Spironucleus barkhanus in farmed Arctic char Salvelinus alpinus is described. The parasites were widely disseminated throughout the vasculature and in most organs. Aggregates of the parasites were seen within well-defined structures regarded as host cells in capillaries and sinusoids of the liver, spleen and head kidney. Intracellular infection with Spironucleus spp. has never previously been reported. The prevalence of infection and mortality in the affected farm was low. In contrast to systemic spironucleosis in farmed Atlantic salmon, and despite huge numbers of flagellates in the vasculature, the tissues of the organs were remarkably unaffected. The relatively few gross and histopathological lesions may indicate that Arctic char are more tolerant to this parasite than Atlantic salmon.