The microbiome of aquaculture polychaete Hediste diversicolor and its cultivation habitat was characterized in order to further optimize future production of the potential replacement of fish meal and fish oil in aquaculture feed as a main ingredient. Through the use of molecular techniques metabarcoding analysis of Alpha and Beta diversity revealed the core microbiome of polychaete gut, tubes within the polychaetes dwell, and sediment of the cultivation environment sharing 454 taxa and displaying a shift in microbial taxa abundance throughout the period of cultivation. For the duration Vibrio remains the most abundant taxa present until the end of the cultivation period where a dramatic increase of Ruegeria. Polychaete microbiome has an influence on the surrounding environment, as seen in the shifts of taxa throughout the period of cultivation. This study provides a baseline for further work that will optimize polychaete cultivation through the manipulation of the hosts microbiome through nutrition and supplements such as prebiotics and probiotics.
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