The Next Frontier in Shrimp Disease Management by Digital PCR
By Dr.Wiphada Mitbumrung, Ph.D. Applied Marine Biosciences — Thu Feb 05 2026
As one of the fastest-growing sectors in global food production, shrimp aquaculture is frequently hindered by disease outbreaks. These outbreaks can devastate entire batches of shrimp, spread to other ponds within the farm, and even carry over to the next farming cycle, causing significant economic losses and threatening the sustainability of the industry. Traditional diagnostic methods often fall short in detecting pathogens early and accurately, leading to delayed responses and widespread infections. This is where digital PCR (dPCR) comes into play. dPCR is a revolutionary technology poised to transform shrimp disease management by offering high precision and sensitivity. By detecting pathogens at the earliest stages, dPCR enables timely interventions, reduces the spread of diseases, and minimizes economic losses.
Digital PCR machineWhat is Digital PCR?
Digital PCR (dPCR) is an advanced and innovative molecular technique used to quantify nucleic acids, such as DNA or RNA, with a high degree of precision and accuracy. Unlike traditional polymerase chain reaction (PCR) or real-time PCR (qPCR), which provide relative quantification, dPCR offers absolute quantification of target nucleic acids. The key feature of dPCR is its ability to partition a sample into thousands, or even millions, of individual reactions. This is typically achieved using microfluidic technology or emulsification to create droplets. Each partition is then analyzed separately to determine the presence or absence of the target pathogen’s genetic material. By counting the number of positive partitions (those containing the target nucleic acid) and applying statistical analysis, dPCR provides an exact count of the target molecules in the original sample. The benefit of partitioning allows for absolute quantification of pathogens, making dPCR highly accurate and reliable even when pathogen levels are extremely low.
Overview of dPCR procedure
Cartridge loading into the dPCR scanner, where reaction droplets are generatedAdvantages of Digital PCR in Shrimp Disease Management
Early Detection: dPCR’s high sensitivity allows for the detection of pathogens at very low concentrations, enabling it to identify potential outbreaks before they spread.
Quantitative Analysis: dPCR provides precise quantification (copies/μl) of pathogen load, offering valuable insights into disease progression and helping to make informed decisions.
High Specificity: dPCR can differentiate between closely related pathogens or genetic variants, ensuring accurate diagnostics and targeted interventions.
Robust Performance: dPCR is less affected by inhibitors often present in environmental samples like pond water or shrimp tissue, making it a reliable tool in diverse farming conditions.