Factors influencing survival of enterotoxigenic Escherichia coli, Salmonella enterica (serovar Typhimurium) and Vibrio parahaemolyticus in marine environments

FEMS Microbiology Ecology
Bodil HernrothIngrid Bölin

Abstract

The presence and persistence of enterotoxigenic Escherichia coli (ETEC) is poorly investigated in marine habitats. Here we compared ETEC with the more studied fecal contaminant, Salmonella enterica serotype Typhimurium (S. enterica) and the marine bacteria Vibrio parahaemolyticus. All three species of bacteria were culturable on agar plates during 8 weeks of incubation in seawater. However, the culturability of ETEC was positively affected by low temperature whereas V. parahaemolyticus was negatively affected. High-nutrient conditions favored the growth of ETEC but not the other bacteria. When the bacteria were fed to blue mussels, V. parahaemolyticus inhibited the filtration activity and the ingestion was lower than that of the enterobacteria. On the other hand, the mussels were less efficient in eliminating V. parahaemolyticus and an in vitro study showed that the hemocytes of three different species of bivalves were not able to kill this strain of V. parahaemolyticus. The bactericidal capacity of bivalves was seemingly an efficient elimination pathway for S. enterica and ETEC. This study showed that ETEC in endemic areas should, to the same degree as S. enterica and V. parahaemolyticus, be taken in consideration when assessi...Continue Reading

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Citations

Jan 12, 2013·Microbial Ecology·Crystal N Johnson
Apr 28, 2012·Proteomics·Sridevi MuralidharanPaul A Haynes
Feb 23, 2020·Journal of Applied Microbiology·B Collin, B Hernroth
Feb 20, 2020·Environmental Monitoring and Assessment·Elif Bozcal, Melih Dagdeviren
Sep 14, 2020·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Marcos Tavares CarneiroJulio Cesar Wasserman

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