Intracellular infection with Spironucleus barkhanus (Diplomonadida: Hexamitidae) in farmed Arctic char Salvelinus alpinus

Diseases of Aquatic Organisms

Geir Bornø¹  Trygve Poppe¹  Erik Sterud¹ 

关键词: Arctic char;    Diplomonadida;    Hexamitids;    Pathology;    Salvelinus alpinus · Spironucleus barkhanus;   

DOI  :  10.3354/dao056155

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: 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 mostorgans. 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 beenreported. 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 remarkablyunaffected. The relatively few gross and histopathological lesions may indicate that Arctic char are more tolerant to this parasite than Atlantic salmon.

【 授权许可】

Unknown