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

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Swimbladder stress syndrome (SBSS) - Fish Diseases

Swimbladder stress syndrome (SBSS) is associated with malfunction of theswimbladder and is also associated with a combination of handling, high am-bient temperature, high ambient illumination, dense algal bloom that presum-ably cause oxygen depletion at night and supersaturation during the day.

Swimbladder stress syndrome (SBSSis associated with malfunction of theswimbladder and is also associated with a combination of handling, high am-bient temperature, high ambient illumination, dense algal bloom that presum-ably cause oxygen depletion at night and supersaturation during the day.

SIGNS:

Affected fish larvae show large bubble of gas in the region antero-dorsal to and outside the swimbladder (Fig. 6-2).


EFFECTS ON HOST:

Hyperinflation of swimbladder; high positive buoyancy and mass mortalities.

PREVENTION AND CONTROL:

      Filter rearing water

 

      Regulate algal bloom in hatcheries

 

      Provide strong aeration to maintain the larvae beneath the water surface in hatchery tanks

 

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