STUDIES ON THE OCCURRENCE OF VIBRIO SP. WITH REFERENCE TO ENVIRONMENTAL FACTORS OF SHRIMP CULTURE POND OF OLPAD REGION IN SURAT

Physico-chemical and microbiological analyses of pond water was conducted to determine if there is any relation between the occurrence of Vibrio sp. and aquatic environmental factors in shrimp culture pond, Olpad, Surat city. Water samples were analysed for different environmental factors such as temperature, pH, dissolved oxygen, salinity, ammonia and hydrogen sulphide. Microbiological study in reference to vibrio sp. was also done by membrane filter technique. Among these water parameters alkaline pH, dissolved oxygen, appropriate temperature and salinity required for shrimp growth. Along with this parameters ammonia, hydrogen sulphide and salinity favours the occurrence of Vibrio cholerae and Vibrio parahaemolyticus. These highly salt tolerant bacteria may cause health hazard to human. Therefore this Study recommended to develop an antibacterial drug to control Vibrio sp. in shrimp aquaculture system to maintain good environment.