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Chapter: Health Management in Aquaculture: Environmental and other non-infectious diseases

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Red Disease - Shrimp Diseases

Red disease in shrimps is associated with high application of lime (2-6 tons/ha) in the pond that gives it a high initial pH; prolonged exposure to low salinity.

Red Disease

Red disease in shrimps is associated with high application of lime (2-6 tons/ha) in the pond that gives it a high initial pH; prolonged exposure to low salinity .

SIGNS:

Affected shrimps have red short streaks on gills or abdominal segments, yel-lowish to reddish discoloration of the body (Fig. 6-9) and increased fluid in the cephalothorax, emitting foul odor.



EFFECTS ON HOST:

Yellow to red discoloration in affected shrimps; histopathology of the hepato-pancreas shows hemocytic infiltration in the spaces between the tubules; more advanced lesions are in the form of fibriotic and melanized encapsulation of necrotic tissues, either in the tubule itself or the sinuses around it.

PREVENTION AND CONTROL:

               Prepare pond bottom properly

 

               Reduce lime and organic matter content inputs


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