engleski

Pathomorphology of Vibriosis in Sea Bass (Dicentrarchus labrax) of Different Ages

Vibriosis caused by Listonella (Vibrio) anguillarum is one of the most important and devastating diseases in cage cultivated sea bass (Dicentrarchus labrax) in Croatian mariculture. This work derives from our observation of different fish farms along the coast systematically monitored for fish diseases. Pathomorphology of this bacterial disease of different ages of sea bass is presented in this paper. The affected fish at all observed cases swam slowly to the water surface, separate from the lot and were reluctant to eat. Pathoanatomically, fish showed skin discoloration, presence of skin erythema on the fin base, around the mouth, on the vent and in more advanced cases ulceration were noted as well. Internal examination revealed hemorrhages on the liver, stomach, intestine, fat tissue, gonads and swim bladder and enlarged spleen. The samples of tissue of all macroscopically changed organs were submitted to histopathological examination and the results are presented in this paper.

sea bass; vibriosis; Vibrio anguillarum; histopathology

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