Uptake and retention of Vibrio cholerae O1 in the Eastern oyster, Crassostrea virginica

Article Abstract:

The cholera-causing bacterium Vibrio cholerae 01 will inhabit and remain in the oyster Crassostrea virginica at higher concentrations than Escherichia coli or Salmonella tallahassee following exposure to contaminated water and standard purification procedures. Licenced purification methods were not effective in removing the V. cholerae 01 from the oysters. The persistence of this bacteria was not directly related to the concentration of V. cholerae - 1-specific agglutinin in the oyster, as has been previously hypothesized.

Observations, Vibrio cholerae, Bacteriology, Oysters, Microbiological assay, Estuarine ecology, Estuarine ecosystems

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Association of multiple-antibiotic-resistance profiles with point and nonpoint sources of Escherichia coli in Apalachicola Bay

Article Abstract:

The association of multiple-antibiotic-resistance profiles with point and nonpoint sources of Escherichia coli in Apalachicola Bay was investigated using E. coli antibiotic resistance to differentiate point sources (PS) and nonpoint sources (NPS) pollution within the area. Results indicate that antibiotic resistance profile of E. coli is associated with its source of pollution. Furthermore, the level of antibiotic resistance among PS and NPS isolates is similar to those from urban and rural waters.

Antibiotics, Escherichia coli, Drug resistance

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Pulsed-field gel electrophoresis and ribotype profiles of clinical and environmental Vibrio vulnificus isolates

Article Abstract:

Vibrio vulnificus is a pathogenic bacteria found in shellfish and estuarine waters and it causes a rapid, invasive and highly lethal disease. To predict the incidence of V. Vulnificus disease, it is necessary to determine the species genetic diversity. Pulsed-field gel electrophoresis, ribotype and biotype analyses reveal four dominant gene clusters among 53 clinical and 78 environmental strains. A a significant relationship between geography and genotype is also observed.

Genetic aspects, Bacteria, Vibrio

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