Survival of the fish pathogen Aeromonas salmonicida in seawater.

Survival and Activity of lux-Marked Aeromonas salmonicida in Seawater.

The fish pathogen Aeromonas salmonicida was chromosomally marked with genes encoding bacterial luciferase, luxAB, isolated from Vibrio fischeri, resulting in constitutive luciferase production. During exponential growth in liquid batch culture, luminescence was directly proportional to biomass concentration, and luminometry provided a lower detection limit of approximately 10(sup3) cells ml(sup...

EPIDEMIOLOGICAL ASPECTS OF Aeromonas salmonicida IN THE MARINE ENVIRONMENT

The epidemiology of Aeromonas salmonicida subsp. salmonicida in the marine environment was investigated. Nutrient resuscitation and infectivity studies did not support a previous claim of dormancy in A. salmonicida and validated the use of colony-forming units (cfu) in survival studies. Survival of A. salmonicida in seawater was assessed and found to be of short duration «10 days). Survival of ...

Protection against Atypical Aeromonas salmonicida Infection in Carp (Cyprinus carpio L.) by Oral Administration of Probiotic Bacterial Culture

Introduction Atypical Aeromonas salmonicida is a fish pathogen that causes several diseases in freshwater fish such as goldfish (Carassius auratus L.) (6) and eel (Anguilla japonica) (2), and also seawater fish (5). Since 1996, A. salmonicida infection characterized by the formation of ulcers on the body surface and fins (ulcer disease) has become prevalent in colored carp (Cyprinus carpio koi ...

Detection of Aeromonas salmonicida in wild Atlantic salmon using a specific DNA probe test

The presence of Aeromonas salrnonicida, the etiological agent of furunculosis, was examined using polymerase chain reaction (PCR) and DNA probe methodology in wild Atlantic salmon Salmo salar taken from 3 Irish river systems Blood samples from 61 individual fish were examined and the presence of pathogen was determined in 87% of the fish examined. However, the level of pathogen was extremely lo...

A broad-spectrum mer operon in a multi-drug resistant strain of the fish pathogen, Aeromonas salmonicida