Muscle of affected shrimps appears cooked. In severely affected shrimps, the exoskeleton appears bluish black, and white tumor-like swellings may be found on gills and subcuticle.  

CAUSE  

Microsporadia such as Agmosoma, Ameson and Pleistophora.  

DIAGNOSIS  

Based on gross signs and symptoms and microscopic demonstration of developmental stages of microsporadia in the affected tiisues.  

PREVENTION  

Affected animals should be destroyed and buried with lime away from the farms. After harvesting, the pond bottom should be throughly dried to kill the spores of the microsporadia.  

CONTROL  

Not known