News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.

AHPND

Health & Welfare

Probiotics benefit Pacific white shrimp challenged with AHPND

A study was conducted to measure the effects of commercial probiotics on Pacific white shrimp in a standardized AHPND challenge model under controlled laboratory conditions. Results show that the probiotics treatments by themselves have beneficial effects, such as higher survival 

Health & Welfare

A holistic management approach to EMS

Early Mortality Syndrome has devastated farmed shrimp in Asia and Latin America. With better understanding of the pathogen and the development and improvement of novel strategies, shrimp farmers are now able to better manage the disease. 

Health & Welfare

PCR methods characterize AHPND V.p isolates

In analyzing the plasmid sequence from the whole genome sequences of AHPND V. parahaemolyticus (V.p) isolates, researchers identified a clear geographical variation within the plasmid, and developed PCR methods to characterize AHPND V.p isolates as either Mexico-type or Southeast Asia-type. 

Health & Welfare

Limited decomposition enhances PCR detection of AHPND Vibrio in shrimp

A study confirmed the utility for improved polymerase chain reaction (PCR) detection of the Vibrio bacteria that cause acute hepatopancreatic necrosis disease (AHPND) in asymptomatic shrimp by permitting the shrimp to expire and decompose for several hours prior to preservation 

Health & Welfare

Genetic variation for resistance to WSS, AHPND in Pacific white shrimp

Selection for disease resistance has been used in breeding farm animals and can be a viable option to deal with white spot syndrome and acute hepatopancreatic necrosis disease in commercial shrimp culture. In trials, heritability for AHPND resistance was low, 

Health & Welfare

Rapid on-site diagnostic tool for AHPND management

To help minimize economic losses caused by acute hepatopancreatic necrosis disease, timely detection of its pathogenic Vibrio etiological agent plays a critical part in disease management. A portable device with accompanying polymerase chain reaction assays can quickly identify the AHPND 

Health & Welfare

Real-time PCR offers sensitivity, specificity in detecting AHPND plasmid

Real-time, quantitative polymerase chain reaction (qPCR) analysis has become an attractive alternative for quantification of the acute hepatopancreatic necrosis disease (AHPND) pathogen in infected shrimp. The authors developed a qPCR assay to quantify a virulence plasmid harbored by the bacterium