The impact of diseases led some Asian shrimp farming countries to develop biofloc and recirculation aquaculture system (RAS) production technologies. Treating incoming water for culture operations and wastewater treatment are biosecurity measures for disease prevention and control.
Early mortality syndrome (EMS) has led to reduced production in major Asian shrimp-farming areas and resulted in higher prices for shrimp. The situation provides opportunities for low-intensity producers in Latin America and other traditionally secondary shrimp producers to expand output
In 2012, samples collected from 92 AHPNS-affected ponds in the Mekong Delta found a number of Vibrio isolates, with the majority V. parahaemolyticus.
Studies by the University of Arizona Aquaculture Pathology Laboratory identified the causative agent for AHPNS as a unique strain of Vibrio parahaemolyticus bacteria that can produce toxins responsible for the primary pathology in affected shrimp.
In studies of early mortality syndrome/acute hepatopancreatic necrosis syndrome at an Agrobest shrimp farm in peninsular Malaysia, results indicated that the disease originated with infected postlarvae and quickly spread throughout the farm.