Aeromonas sobria, a causative agent of disease in farmed perch, Perca fluviatilis L

Significant numbers of perch, Perca fluviatilis, raised on a pilot fish farm in Switzerland presented focal skin lesions on the lateral sides and fin rot. Mortality rates reached levels of up to 1% of the total fish on the farm per day. Virtually pure cultures of Aeromonas sobria were isolated from...

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Veröffentlicht in:Journal of fish diseases 2005-03, Vol.28 (3), p.141-150
Hauptverfasser: Wahli, T, Burr, S E, Pugovkin, D, Mueller, O, Frey, J
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container_title Journal of fish diseases
container_volume 28
creator Wahli, T
Burr, S E
Pugovkin, D
Mueller, O
Frey, J
description Significant numbers of perch, Perca fluviatilis, raised on a pilot fish farm in Switzerland presented focal skin lesions on the lateral sides and fin rot. Mortality rates reached levels of up to 1% of the total fish on the farm per day. Virtually pure cultures of Aeromonas sobria were isolated from the liver, kidney, spleen and skin lesions of affected fish. Aeromonas sobria isolated from the farmed perch had a haemolytic effect on sheep and trout erythrocytes, autoaggregated, was cytotoxic for cultured fish cells and possessed genes involved in type III protein secretion. Experimental infection of naïve perch with a single colony isolate of A. sobria from an affected farm fish resulted in the development of clinical signs identical to those seen on the farm. The results indicate that A. sobria can act as a primary pathogen of perch.
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Mortality rates reached levels of up to 1% of the total fish on the farm per day. Virtually pure cultures of Aeromonas sobria were isolated from the liver, kidney, spleen and skin lesions of affected fish. Aeromonas sobria isolated from the farmed perch had a haemolytic effect on sheep and trout erythrocytes, autoaggregated, was cytotoxic for cultured fish cells and possessed genes involved in type III protein secretion. Experimental infection of naïve perch with a single colony isolate of A. sobria from an affected farm fish resulted in the development of clinical signs identical to those seen on the farm. 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subjects Aeromonas - genetics
Aeromonas - pathogenicity
Aeromonas sobria
Aeromonas virulence
Amino Acid Sequence
Animals
Aquaculture
Cytotoxicity Tests, Immunologic
DNA Primers
Electrophoresis
Fish Diseases - epidemiology
Fish Diseases - microbiology
Fish Diseases - pathology
Freshwater
Gram-Negative Bacterial Infections - epidemiology
Gram-Negative Bacterial Infections - pathology
Gram-Negative Bacterial Infections - veterinary
Hemolysis - physiology
Kidney - microbiology
Liver - microbiology
motile Aeromonas septicaemia
Perca fluviatilis
perch
Perches
Proteins - genetics
Sequence Analysis, DNA
Sequence Homology
Skin - microbiology
Skin - pathology
Species Specificity
Spleen - microbiology
Switzerland - epidemiology
Temperature
type III protein secretion
title Aeromonas sobria, a causative agent of disease in farmed perch, Perca fluviatilis L
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