Expression of immune-related genes at different post-larvae stages of tiger shrimp, Penaeus monodon

Abstract

Acute Hepatopancreatic Necrosis Disease (AHPND), a disease caused by Vibrio parahaemolyticus (VPAHPND), rest:.lts in mass mortalities worldwide in the Penaeid shrimp aquacultme industry, leading to severe fmanciallosses. To understand the immunity response of Penaeus monodon post-larvae (PL) towards VpAHPND infection, the shrimp survivability, expression of immunity genes and presence of bacterial toxin genes were investigated and validated in three stages of P. monodon PL (PL15, PL30 and PL45). In a total of20-hom time-course challenge test conducted for the PL stages that were exposed to 2.7 x 10 7 cfu ml- 1 ofVpAHPND, highest mortality was observed in PL 30 (81 %), followed by PL15 (65%) and PL45 (1.67%).