Accumulation and elimination of Escherichia coli and Salmonella typhimurium by hard clams in an in vitro system.

AUTOR(ES)

Timoney, J F

RESUMO

A simple, in vitro protocol was devised to study contamination by and subsequent elimination of Escherichia coli and Salmonella typhimurium in the hard clam, Mercenaria mercenaria. The test bacteria were eliminated rapidly at similar rates for 8 h after exposure and less rapidly thereafter. At 24 h, numbers of E. coli had declined more than S. typhimurium. Bacteria were cleared in the form of rapidly sedimenting fecal and pseudofecal particulates with which the bacteria were stably associated. Ionic bonding was apparently not involved in this association. Degradation of substantial numbers of bacteria occurred in feces at between 6 and 24 h.

Documentos Relacionados

• Survival of chlorine-injured enterotoxigenic Escherichia coli in an in vitro water system.
• Accumulation and Elimination of Coliphage S-13 by the Hard Clam, Mercenaria mercenaria
• Allosteric regulation of glycerol kinase by enzyme IIIglc of the phosphotransferase system in Escherichia coli and Salmonella typhimurium.
• Permease-specific mutations in Salmonella typhimurium and Escherichia coli that release the glycerol, maltose, melibiose, and lactose transport systems from regulation by the phosphoenolpyruvate:sugar phosphotransferase system.
• F-Prime Factors of SALMONELLA TYPHIMURIUM and an Inversion between S. TYPHIMURIUM and ESCHERICHIA COLI