1. Salinity-induced survival strategy of Vibrio cholerae associated with copepods in Cochin backwaters.
- Author
-
Thomas KU, Joseph N, Raveendran O, and Nair S
- Subjects
- Animals, DNA Primers, Esters analysis, India, Polymerase Chain Reaction, Seawater chemistry, Sodium Chloride analysis, Vibrio cholerae genetics, Adaptation, Physiological physiology, Copepoda microbiology, Geologic Sediments microbiology, Seawater microbiology, Vibrio cholerae physiology, Water Microbiology
- Abstract
The occurrence of Vibrio cholerae in water, sediment and copepods was studied over a wide range of salinity using conventional and polymerase chain reaction (PCR) techniques in the Cochin backwaters. V. cholerae occurred either as culturable or non-culturable form in this tropical estuary. During the pre monsoon period when high salinity prevailed (35.5psu) V. cholerae was associated with copepods only in non-culturable form, but with the onset of monsoon when lower salinity prevailed, copepod-associated-V. cholerae reverted back to culturable form. The optimum salinity range for culturability was found to be 15-20psu. This points to the fact that salinity is a major factor that which influences V. cholerae's culturability and its association with copepods in Cochin backwaters.
- Published
- 2006
- Full Text
- View/download PDF