Survival of Salmonella enterica in Freshwater and Sediments and Transmission by the Aquatic Midge Chironomus tentans (Chironomidae: Diptera)
Open Access
- 1 August 2003
- journal article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 69 (8), 4556-4560
- https://doi.org/10.1128/aem.69.8.4556-4560.2003
Abstract
Survival of a nalidixic acid-resistant strain of Salmonella enterica serovar Typhimurium mr-DT-104 in water and sediments was tested using artificially contaminated aquaria. Water samples remained culture positive for salmonella for up to 54 days. Sediment samples were culture positive up to 119 days. In addition, potential mechanisms for spreading salmonella in the environments by chironomid larvae and adults were tested. We evaluated the acquisition of mr-DT-104 by chironomids from contaminated aquatic sediments and subsequent spread to uncontaminated sediments. Larval chironomids raised in contaminated sediments became culture positive, and the bacteria were carried over to adults after emergence. Contamination of clean sediments by chironomid larvae was not demonstrated. These findings clearly suggest that mr-DT-104 serovar organisms can survive in aquatic sediments for at least several months. Uptake of salmonellae by chironomid larvae and adults suggests that they are possible vectors of mr-DT-104 in both aquatic and terrestrial environments, although the role of larval defecation in movement of bacteria to new sediments was not demonstrated.Keywords
This publication has 24 references indexed in Scilit:
- Vibrio choleraeand cholera: out of the water and into the hostFEMS Microbiology Reviews, 2002
- Salmonella enterica serotype Typhimurium DT104 Isolated from Humans, United States, 1985, 1990, and 1995Emerging Infectious Diseases, 2002
- Molecular characterization, spread and evolution of multidrug resistance in Salmonella enterica Typhimurium DT104Veterinary Research, 2001
- Transmission of multi-resistant strains of Salmonella typhimurium from cattle to manPublished by Wiley ,1995
- Influence of freshwater sediment on the survival of Escherichia coli and Salmonella sp. as measured by three methods of enumerationLetters in Applied Microbiology, 1995
- Survival and activity of Salmonella typhimurium and Escherichia coli in tropical freshwaterJournal of Applied Bacteriology, 1989
- Comparative study of different methods for detection and enumeration of Salmonella spp. in natural watersJournal of Applied Bacteriology, 1986
- Viable but nonrecoverable stage of Salmonella enteritidis in aquatic systemsCanadian Journal of Microbiology, 1984
- Comparative study of E. coli survival in two aquatic ecosystemsWater Research, 1976
- Enteric bacterial metabolism of stream sediment eluatesCanadian Journal of Microbiology, 1971