02560nab a2200385 a 4500 AR-ReUNN 20260702003057.0 260630s2006 ag |||||||||||||||||eng eng González, Rubén Dario 142275 Tamagnini, Lucía María 147567 Bistoni, María de los Angeles 144722 Guzmán, María Cecilia 147568 Recovery of Escherichia coli in fresh water fish, Jenynsia multidentata and Bryconamericus iheringi / María Cecilia Guzmán ...[et al.]. 2006 7 páginas Disponible en caja 9 no 1 de INICNE Escherichia coli concentration was determined in digestive tract and muscle of Jenynsia multidentata and Bryconamericus iheringi through bioassays. Field experiments were also conducted with J. multidentata collected in the Suquía River, Córdoba, Argentina. E. coli was quantified by the most probable number, using lauryl sulphate tryptose broth with 4-methylumbelliferyl-ß-D-glucuronide. For bioassays, E. coli concentrations 102, 103, 104, 105, 106 CFU/ml were introduced in aquarium water. E. coli was recovered from the digestive tracts of J. multidentata and B. iheringi in all the concentrations assayed. Bacterial critical load in water for the recovery of bacteria from muscle, was 103 CFU/ml for both species. The regression analysis between E. coli loads in water and those found in digestive tract and muscle showed a positive linear relationship for J. multidentata and B. iheringi. The same relation was observed between the concentration of bacteria in digestive tract and muscle in both species. In field experiments, E. coli was recovered from digestive tract and muscle of J. multidentata. The presence of E. coli in the studied fish suggests that they can carry bacteria to non-polluted waters. However, further studies are necessary to evaluate its significance for public and environmental health. Parasitología 7186 Escherichia Coli 10191 Parasitology 126669 Peces de Agua Dulce 6471 Freshwater Fish 117439 Inland Waters 117440 Cordoba (argentina) 5506 Argentina 4258 Jenynsia Multidentata 147569 Madrecita 147457 Bryconamericus Iheringi 147570 Lambari 147452 Water Research v. 38 (2004) 234696 ART (INICN)36100 234697 234697 234697 AR-ReUNN spa AR-ReUNN aacr2