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Laboratory Techniques Used to Maintain and Differentiate Biotypes of Vibrio cholerae Clinical and Environmental Isolates
Published on: May 30, 2017
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Distribution ofVibrio cholerae in two Florida estuaries
M A Hood1, G E Ness, G E Rodrick
1Department of Biology, University of West Florida, 32504, Pensacola, Florida, USA.
Microbial Ecology
|November 14, 2013
Summary
Vibrio cholerae, particularly non-O1 serotypes, is widespread in Florida estuaries like Apalachicola and Tampa Bay. Optimal growth occurs in warm waters with salinities between 10‰-25‰.
Area of Science:
- Environmental microbiology
- Marine biology
- Bacteriology
Background:
- Vibrio cholerae is a significant human pathogen.
- Understanding its environmental distribution is crucial for public health.
- Florida estuaries are ecologically and economically important ecosystems.
Purpose of the Study:
- To investigate the distribution and prevalence of Vibrio cholerae serotypes in two Florida estuaries.
- To identify environmental factors influencing Vibrio cholerae distribution.
- To determine optimal conditions for Vibrio cholerae growth.
Main Methods:
- Sampling of oysters, sediments, water, and blue crabs from Apalachicola and Tampa Bay.
- Isolation and serotyping of Vibrio cholerae strains.
- Analysis of physical and chemical parameters (temperature, salinity).
- In vitro growth curve analysis of environmental isolates.
Main Results:
- Vibrio cholerae non-O1 was the predominant serotype, found in oysters, sediments, water, and blue crabs.
- Vibrio cholerae O1 was rarely detected.
- No strong linear correlations were found with physical/chemical parameters or indicator bacteria.
- Optimal salinity range for Vibrio cholerae growth was 10‰-25‰, with temperatures between 20°C-35°C.
Conclusions:
- Vibrio cholerae is widely distributed in nutrient-rich, warm waters of Gulf Coast estuaries.
- Environmental conditions, particularly salinity and temperature, play a role in its distribution.
- Non-O1 serotypes are more prevalent in these estuarine environments.
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