Abstract

Aquaculture is increasing greatly as the most contributer to human welfare by helping solve the food scarcity problem and malnutrition and providing livelihood to people. and despite weakening trends, aquaculture remains the fastest growing food sector worldwide with increases in production achieved through intensification of existing farming systems. However, the nature of aquaculture itself has indirectly caused massive mortalities among the cultured organisms, particularly during larviculture. In addition, manipulations applied to the cultured animals may disturb the balance between microbial communities, or favor proliferation of opportunistic resistant bacteria or unpredictable development of bacterial communities.