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Pakistan Journal of Biological Sciences

Year: 2001 | Volume: 4 | Issue: 11 | Page No.: 1395-1399
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ABSTRACT

Bacterial chemotaxis is one of the important mechanisms of association of bacteria and other living biota. To investigate the role of chemotaxis that might function for association of Vibrio cholerae -0139 with different aquatic flora and fauna, the homogenates of four aquatic plants and animals namely water hyacinth (Eichhornia crassipes), water cress (Pistia stratiotes), oyster (Lamellidens marginalis) and snail (Pila globosa) were examined in chemotaxis capillary assay. Chemotaxis assay revealed that V. cholerae -0139 swims towards the homogenates of aquatic plants and animals with a higher chemotactic response being observed for 4% solution of P. globosa homogenate. The influence of temperature and salinity on the chemotaxis of V. cholerae -0139 revealed that at 250C and 1.7% salinity favoured the chemotactic motility towards the homogenates of aquatic flora and fauna. Vibrio cholerae -01 also showed the chemotactic response to the homogenates of snail muscles.
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