A REPORT ON DISEASE DIAGNOSIS OF WHITE SPOT SYNDROME (WSSV) SURVEILLANCE PROGRAMME CARRIED IN NELLORE DISTRICT- ANDHRA PRADESH -2017

India is endowed with a wide diversity of water resources, which can provide scope for highly developed fisheries sector. The sector provides nutrition and livelihood security for a large number of people and also source of foreign exchange. With rapid shift from capture to culture fisheries, the sector needs systematic intervention on aquatic health problems. White Spot Syndrome (WSSV) is prevalent in L. vannamei but diagnosis can help farmers avoid and reduce the spread of WSSV to other ponds. The early harvest just by seeing the white spots on carapace can be avoided by implementing these diagnostic techniques. Significant proportion of brackish water farms are adopting poly-culture Biological Samples Screened and Culture. A sample size of 51 were screened for nine pathogens and diseases were detected and revealed are three diseases pathogen namely, IHHNV, WSSV and EHP. The appearance of white spots on shrimp is predominant, causing panic to farmers and often resort to emergency harvest and to save whatever they can. The present work helps in differential diagnosis of white spots at the laboratory level and confirmatory diagnosis by using rapid test kits like rapid dot or Shrimple. On the other hand, it is necessary that the farmers should maintain strict biosecurity measures to prevent the spread of the diseases to the other species.