Efficacy and toxicity of common disinfe ctants on seabass (Lates calcarifer) larvae

Abstract

The efficacy of four chemicals as eggs disinfectant was evaluated on seabass eggs following a toxicological approach. The focus of this study is to establish disinfection protocol that will facilitate manipulation of the microflora of marine fish eggs to obtain healthy, bacteria-free larvae. The four chemicals used were formalin, hydrogen peroxide, iodine and sodium hypochlorite. The chemicals were administered to seabass eggs at different concentations and were evaluated on the basis of their bactericidal and potential toxic effects on marine fish eggs under hatchery conditions. The effects of exposure of seabass eggs to different disinfectants on 24-h larval survival were evaluated.