Myxosporean infection causing intestinal disease in farmed turbot, Scophthalmus maximus (L.), (Teleostei: Scophthalmidae)

被引:53
作者
Branson, E
Riaza, A
Alvarez-Pellitero, P [1 ]
机构
[1] CSIC, Inst Acuicultura Torre de la Sal, Ribera de Cabanes 12595, Castellon, Spain
[2] Red House Farm, Monmouth, Gwent, Wales
关键词
D O I
10.1046/j.1365-2761.1999.00193.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The present report describes an intestinal disease which causes important losses in farmed turbot. Mortality rates were higher in summer and reached 100% in all tanks where the disease was confirmed. Affected fish showed external signs consisting of anorexia, sunken eyes and a typical prominent bony ridge on the skull. These signs can be considered the pathognomonic signs of the disease, together with the gut lesions seen in the histological study. Pallor of the internal organs, intestinal haemorrhages and the presence of liquid in the intestine were also observed, with ascites in heavily infected fish. Histopathological damage was evident in the gut, with severe enteritis, detachment of epithelium, haemorrhages and inflammation of the subepithelial connective tissue. The myxosporean aetiology was demonstrated in all the fish showing the characteristic signs of disease. Myxosporean stages, including scarce spores, were found in the affected epithelium or free in the intestinal lumen together with epithelial debris. The present study demonstrates the importance of this myxosporean disease which represents a serious threat for turbot culture. This is also the first record of a member of the Myxosporea in turbot.
引用
收藏
页码:395 / 399
页数:5
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