The first experiment, Trial (A), was performed over a six week period at 11 (ppt)salinity and consisted of a Control A (35 ppm nitrate-N), Treatment A1 (220 ppm nitrate-N), Treatment A2 (435 ppm nitrate-N), and Treatment A3 (910 ppm nitrate-N). No differences were observed between control A and treatment A1 in terms of shrimp survival, growth, shrimp biomass, and antennae length. Treatment A2 exhibited no significant differences compared to Control A in terms of survival and growth, but did exhibit significant negative impacts (Pb0.05) on shrimp biomass and antennae length. Lastly, treatment A3 significantly and negatively impacted (Pb0.05) survival, growth, total mass, and antennae length.