Diseases of seabass in cage culture and control measures

Sobhana, K S (2009) Diseases of seabass in cage culture and control measures. In: Course manual: National training on cage culture of seabass. CMFRI & NFDB, Kochi, pp. 87-93.

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Abstract

The cage culture of finfish, especially marine cage farming is becoming more popular because of the many economic advantages associated with it. Though, operationally this has a number of advantages, the practice is vulnerable to natural hazards and can be affected by occurrence of diseases. Disease outbreaks can occur more often when fish are raised under intensive culture conditions and can pose problems in cage culture. Increased production under high density can create conditions conducive to outbreaks of infectious diseases and an increase in prevalence of parasites. Infectious diseases in fish culture are not only augmented by waste pollution, but exacerbated by crowding, handling, temperature and biofouling. The most common fish disease in cages is vibriosis caused by Vibrio spp. Furthermore, abrasions cause fin and skin damage to cultured stocks. Occurrence of infection/disease may be minimized by selecting good sites, proper mooring and observance of optimal stocking densities and careful handling of stocks.

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