Pseudobranchial X-cell pseudotumors in young wild and farmed Atlantic cod Gadus morhua in Iceland

Diseases of Aquatic Organisms

M. Eydal¹  S. H. Bambir¹  Á. Kristmundsson¹ 

关键词: Pseudotumor;    X-cell;    Wild cod;    Farmed cod;    Prevalence;    Disease;   

DOI  :  10.3354/dao02248

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: This study investigated the prevalence of pseudobranchial X-cell pseudotumors in 2 year classes of wild juvenile cod and to a lesser extent in older cod in NW Iceland. The disease was also monitored in farmed wild-caught juvenile cod. The youngest wild cod detected that had X-cell infections were 6.5 to 13.0 cm in length, with prevalence reaching a maximum level of 7%. The highest prevalence (23%) was recorded in 18.5 to 27.0 cm fish. The mean prevalence in older cod (25.0 to 76.0 cm in length) was 7% but decreased with increasing age. The mean prevalence of X-cell pseudotumors in farmed juvenile cod was ≤1% during winter rearing in land-based tanks. Higher prevalence (2 to 15%) was noted in dead and moribund fish. Diseased farmed fish were usually emaciated, and mortality due to the disease was noticeable.

【 授权许可】

Unknown