Radiodiagnostic method for studying swimbladder inflammation caused by Anguillicola crassus (Nematoda: Dracunculoidea)

Diseases of Aquatic Organisms

Cs. Székely¹  K. Molnár¹  A. Beregi¹  L. Békési¹ 

关键词: Radiography;    Eel;    Swimbladder;    Anguillicola crassus;    Nematode;    Parasite;   

DOI  :  10.3354/dao034155

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: The nematode Anguillicola crassus appeared in Europe about 15 yr ago, and has subsequently become recognised as a cause of major pathological lesions in the swimbladder of the European eel Anguilla anguilla. The radiographic methodreported in this paper showed be a useful complement to diagnostic methods that have so far been based exclusively on fish dissection. Using this method, the infection of the swimbladder and the severity of its pathological changes can be assessed in areliable manner without causing damage to the fish. By analysing radiographs of 45 eels from Lake Balaton, 5 stages of swimbladder lesions were distinguished. The method enables the examiner to draw conclusions on the air, worm and exudate content of theswimbladder; however, data on thickening of the swimbladder wall can be obtained only indirectly. The radiograph also provides information on the air and worm content of the pneumatic duct. Results obtained by radiography showed good agreement withdissection findings. Radiographic results are compared with pathological findings obtained from fish dissections separately for each severity grade of infection.

【 授权许可】

Unknown