STOCKING INFECTIOUS HYPODERMAL AND HAEMATOPOIETIC NECROSIS VIRUS (IHHNV)-POSITIVE POSTLARVAE DID NOT IMPROVE PRODUCTION AND SURVIVAL UPON WHITE SPOT SYNDROME VIRUS (WSSV) OUTBREAKS IN SHRIMP FARMS FRO

摘要

Infectious hypodermal and haematopoietic necrosis virus (IHHNV) caused high mortalities to blue shrimp Litopenaevs stylirostris and induced the runt deformity syndrome in the whitelegged shrimp L. vQTXYiamei. IHHNV is still prevalent in many hatcheries in Northwest Mexico and it appears to have reduced its pathogenicity to shrimp populations. IHHNV has recently gained interest due to its alleged ability to interfere with white spot syndrome virus (WSSV) infection in shrimp. WSSV is the most lethal shrimp virus to date. Experimental studies indicated interference between IHHNV and WSSV upon co-infection.