TY - JOUR T1 - Bacterial colonization of winter flounder Pseudopleuronectes americanus fed live feed enriched with three different commercial diets A1 - Seychelles,L. H. A1 - Audet,C. A1 - Tremblay,R. A1 - Lemarchand,K. A1 - Pernet,Fabrice AD - Univ Quebec, Inst Sci Mer Rimouski, Rimouski, PQ G5L 3A1, Canada. AD - IFREMER, Lab Environm Resources Languedoc Roussillon, Sete, France. UR - https://doi.org/10.1111/j.1365-2095.2009.00750.x DO - 10.1111/j.1365-2095.2009.00750.x KW - bacteria KW - colonization KW - fatty acids KW - live feed KW - winter flounder N2 - The proliferation of bacteria in intensive aquaculture systems may be responsible for poor growth and mass mortality of marine fish larvae. Essential fatty acids provided in the diet could protect larvae by modulation of the immune response via arachidonic acid (AA) and eicosapentaenoic acid (EPA). Winter flounder Pseudopleuronectes americanus larvae were fed rotifers Brachionus plicatilis enriched with three commercial diets containing different fatty acid profiles. Bacterial colonization on the gills and skin and in the intestinal lumen was evaluated at the end of the rotifer feeding period (day 26), and growth was surveyed until metamorphosis. At 26 days post hatching, larvae fed rotifers containing the higher AA content and with a higher docosahexaenoic acid (DHA) to EPA ratio showed better growth and the lowest bacterial colonization of the intestinal lumen compared to larvae fed rotifers with the lowest AA and DHA : EPA levels. AA had been selectively incorporated into the polar lipids of larvae fed the rotifers enriched with the three diets. This is the first study in winter flounder larvae to report a link between different commercial rotifer enrichments and bacterial density in intestinal lumen. Y1 - 2011/04 PB - Wiley-blackwell JF - Aquaculture Nutrition SN - 1353-5773 VL - 17 IS - 2 ID - 14273 ER -