Breeding of fish species is a growing industry, since humans need the fatty acids that the fishes provide. We have known this since the 1930, when the couple Burr published two articles that changed the field of nutritional biology for good, setting in stone that fatty acids are important for the health of humans as well as other living organisms. As humans we get our fatty acids mostly from fishes, which is why this industry is in such growth. The fishes need their fatty acids from their food as well, and this is where this projects focus lies. In this project we have grown 5 different strains of Rhodomonas and fed them to 5 different cultures of isolated Acartia Tonsa nauplii, to see if it was possible to enhance the fatty acid profiles of said crustaceans, since A. tonsa is the ideal live feed for fish larvae. The Rhodomonas strain K0294 has a higher DHA EPA ratio in both microalgae and A.tonsa (figure 5 & 8). The Rhodomonas strain K0294 is recommend as primary producer in a three step chain of trophic upgrading of FA to A.tonsa and fish larvae
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