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Aeromonas hydrophila isolated from wild freshwater fish in Croatia

Topić Popović, Natalija; Strunjak-Perović, Ivančica; Čož-Rakovac, Rozelindra (2000) Aeromonas hydrophila isolated from wild freshwater fish in Croatia. Veterinary Research Communications, 24 (6). pp. 371-377. ISSN 0165-7380

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Aeromonas hydrophila was recovered from fish living in lake Vrana on the Croatian island of Cres. The occurence of the bacterium in the fish was assessed and related to gross signs of disease and findings at necropsy as a potential health hazard for fish. Isolated bacteria were subjected to morphological, physiological, biochemical and antibiotic susceptibility tests. A total of 26 A. hydrophila isolates were obtained. There was a clear seasonality, as no isolates were recovered in the summer months. Most of the isolates were sensitive to all the antimicrobials used in the study except novobiocin and penicilling G. Affected fish manifested haemorrhages over the skin, in the liver, kidney and swim bladder, spleen infarcts, fatty liver, ascitic fluid and swollen haemopoietic tissues. A. hydrophila does not appear to pose a major threat for the fish in the lake at present but under unfavourable and stressful conditions it could seriously compromise fish health.

Item Type: Article
Uncontrolled Keywords: Aeromonas hydrophila; antibiotics; fish; lake; pathology; season
Subjects: NATURAL SCIENCES > Biology
Divisions: Division of Materials Chemistry
Depositing User: Natalija Topić Popović
Date Deposited: 08 Dec 2017 13:27
DOI: 10.1023/A:1006418116155

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