The dietary effect of arachidonic acid (20:4n-6, AA) on the composition of the head and the body, and on the pigmentation of Japanese flounder, Paralichthys olivaceus (T. & S.), was studied by means of microbound diets. Increasing levels of this essential fatty acid produced higher growth and pigmentation success in juveniles after 45 days of feeding. The role played by AA in the composition of phosphatidylinositol and eicosanoid synthesis is discussed in relation to the normal function of the neural system and the production of hormones involved in the metamorphosis and pigmentation of flatfish.
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Estévez et al. (1997) studied this question.
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