Indian shrimp hatcheries have experienced larval mortality in the zoea-2 stage, with molt deterioration and resulting in heavy mortality. Authors considered biotic and abiotic factors. Part 2 describes results of their study.
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.
The Queiroz Galvão Alimentos shrimp farm and hatchery in Brazil have been working with Concepto Azul to implement a disease-prevention and genetic-breeding program that addresses ongoing impacts from infectious myonecrosis virus (IMNV) and other pathogens.
Although still being refined, the IMNV challenge method developed at the University of Arizona has shown promise as a tool to measure resistance in selected family lines of L. vannamei.
The method can shorten analysis time and has applications for IMNV diagnosis in resource-poor settings because it does not require specialized equipment.