To further investigate whether genes involved in the biosynthesis of unsaturated fatty acid were affected during AHPND infection, the expression of several genes in this pathway [Acyl-coenzyme A thioesterase (LvACT1, LvACT2, LvACT3; EC 3.1.2.20), Palmitoyl-protein thioesterase (LvPPT; EC 3.1.2.22), and stearoyl-CoA desaturase (LvΔ-9 desaturase; EC 1.14.19.1) was determined in shrimp that had been confirmed to be infected with AHPND (Supplementary Figure S1). The gene discussed is SCD; the disease is infection.