Three specimens of P.monodon (~20 g)were released into each tank
(n = 30). For each pair of tanks, a single shrimp was infected by
injecting a 100 μl aliquot of YHV inoculum (~106 viral copies) into its
3rd abdominal segment before releasing it into one of the tanks (hereafter
referred to as the “infected tank,” Fig. 1).