Türkiye'de Yetiştiriciliği Yapılan Levrek Balıklarında (Dicentrarchus labrax) Aeromonas veronii biovar veronii Enfeksiyonu
Author:
KARATAŞ STEINUM Süheyla1ORCID, TURGAY Emre2ORCID, YARDIMCI Remziye Eda2ORCID, STEINUM Terje Marken3ORCID
Affiliation:
1. İSTANBUL ÜNİVERSİTESİ, SU BİLİMLERİ FAKÜLTESİ 2. İSTANBUL ÜNİVERSİTESİ, SU BİLİMLERİ FAKÜLTESİ, SU ÜRÜNLERİ YETİŞTİRİCİLİĞİ VE HASTALIKLARI BÖLÜMÜ, SU ÜRÜNLERİ HASTALIKLARI ANABİLİM DALI, HASTALIKLAR BİLİM DALI 3. İSTANBUL ÜNİVERSİTESİ, FEN FAKÜLTESİ, MOLEKÜLER BİYOLOJİ VE GENETİK BÖLÜMÜ, MOLEKÜLER BİYOLOJİ VE GENETİK ANABİLİM DALI
Abstract
Fish in aquaculture systems are susceptible to infectious agents as they are kept in a densely populated and often physically restricted environment. Genus Aeromonas include well-known pathogens, and the member Aeromonas veronii has been reported to cause diseases in both humans and animals, either as primary infection or as mixed infection with other pathogens. This study describes a low mortality epizootic caused by Aeromonas veronii biovar veronii in European seabass (Dicentrarchus labrax) farmed in the Aegean Sea. The gills, kidneys and livers of moribund fish were pale. Erythema, haemorrhage and superficial ulcerative lesions were detected on the skin. In addition, petechial haemorrhage was observed on the tongue, maxilla, and operculum. The spleen was enlarged and multiple granulomas were detected in both the kidney and the spleen. Some fish had skin depigmentation, ecchymosis in the liver, and a bloody exudate in the abdominal cavity. The intestinal walls were lined with a clear yellowish fluid. Twenty-nine motile, Gram-negative bacterial isolates were obtained from the internal organs of diseased fish. According to morphology, biochemical properties and 16S rRNA gene sequencing results, all isolates were identified as Aeromonas veronii bv. veronii. All isolates were resistant to amoxicillin and ampicillin, and sensitive to oxytetracycline, enrofloxacin, ciprofloxacin, florfenicol, and flumequine.
Funder
The Scientific Research Projects Coordination Unit of Istanbul University
Publisher
KSU Journal of Agriculture and Nature
Subject
General Earth and Planetary Sciences,General Engineering,General Environmental Science
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