Characterization and modulation of gene expression and enzymatic activity of delta-6 desaturase in teleosts: A review

There is currently considerable interest in understanding how the biosynthetic pathways of highly unsaturated fatty acids (HUFA) are regulated in fish. The aim is to know if it is possible to replace fish oils (FO), rich in HUFA, by vegetable oils (VO), poor in HUFA and rich in their 18 carbon fatty acid precursors, in the feed of cultured fish species of commercial importance. Thus many studies have focussed on delta-6 desaturase (∆6D) since it...