Lastly, treatment A3 significantly and negatively impacted (Pb0.05) survival, growth, total mass, and antennae length. Histopathology of shrimp from Trial A and all three groups of Treatments A1 through A3 demonstrated lesions in the hepatopancreas, and a few individuals from each of these three groups had gill abnormalities (e.g. fouling). A second experiment, Trial (B), was conducted over a fiveweek period to evaluate the effects of elevated nitrate at various salinities.