Incidence of white spot disease (WSD) in Penaeus indicus farms in Bushehr Province, Iran.

The incidence of white spot disease in farmed Penaeus indicus in Busheher region was evaluated by analyzing 200 shrimp individuals between June and September, 2005. The samples were examined for clinical sign including observation of white spots on the cuticle and tissue. Samples were processed using polymerase chain reaction (Nested-PCR) test. The results showed that 24% of the samples examined were clinically positive having white spots on their cuticles. Also,92% of the samples examined were positive in PCR examination . Furthermore, 70% of apparently healthy shrimp were positively identified using the by PCR test.