Genetics and disease resistance in aquaculture

Disease in aquaculture is a significant problem especially in intensive cul ture systems. Relatively little effort in combating disease has been expend ed in developing genetically resistant strains. Nevertheless, the experienc e available from economically important terrestrial species, the need to us e environmentally friendly or neutral production systems and the impressive range of genetic technologies available, combine to suggest that genetic a pproaches to disease resistance (combined with appropriate husbandry) repre sent the most effective and attractive way forward.