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Abstract:
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Aquaculture is one of the fastest growing food sectors in the world.
Amongst the various branches of aquaculture, shrimp culture has expanded
rapidly across the globe because of its faster growth rate, short culture period,
high export value and demand in the International market. Indian shrimp
farming has experienced phenomenal development over the decades due to its
excellent commercial viability. Farmers have adopted a number of innovative
technologies to improve the production and to maximize the returns per unit
area. The culture methods adopted can be classified in to extensive, modified
extensive and semi intensive based on the management strategies adopted in
terms of pond size, stocking density, feeding and environmental control. In all
these systems water exchanges through the natural tidal effects, or pump fed
either from creek or from estuaries is a common practice. In all the cases, the
systems are prone to epizootics due to the pathogen introduction through the
incoming water, either brought by vectors, reservoir hosts, infected tissue
debris and free pathogens themselves. In this scenario, measures to prevent the
introduction of pathogen have become a necessity to protect the crop from the
onslaught of diseases as well as to prevent the discharge of waste water in to
the culture environment.The present thesis deals with Standardization of bioremediation technology for zero water exchange shrimp culture system |