Feeding live molluscs to shrimp poses as risk for WSSV infection
which might be due to two ways of transmission. Molluscs being filter
feeders can serve as WSSV carriers, and molluscs could ingest WSSV
particles from the soil and the water column, which could be
transferred to the shrimp when the latter feed on the former. Feeding
commercial pellets as risk factor in polyculture farms might be a
consequence of sludge accumulation at the pond bottom due to the
absence of pond preparation in these farms.