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  • Title: Salinity-induced survival strategy of Vibrio cholerae associated with copepods in Cochin backwaters.
    Author: Thomas KU, Joseph N, Raveendran O, Nair S.
    Journal: Mar Pollut Bull; 2006 Nov; 52(11):1425-30. PubMed ID: 16764894.
    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.
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