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June 3, 2014

Australia

Nutritional Quality of Marine Worms from Sand Filters

 

This study examined the nutritional composition of the intertidal marine polychaete Perinereis helleri (Nereididae) when cultured in sand filters used for treating mariculture wastewater.  Stocking density and size significantly affected the worm’s nutritional composition.  Higher total lipid contents were found in large P. helleri and those grown at the lowest density.  Several fatty acids within a very broad profile (some 30 identified) reflected this pattern, yet arachidonic, eicosapentaenoic and docosahexaenoic-acid ratios were relatively unaffected.  Feeding the polychaetes with fishmeal significantly increased their docosahexaenoic acid content.  Other components (protein, phospholipids, cholesterol, carbohydrate, amino acids, nitrogen, minerals and bromophenols) and nutritional factors (maturity, feeding seaweed and endemic shrimp viral content) were also investigated.  Results suggest that P. helleri produced in in sand filters supply a well-balanced nutritional profile for penaeid shrimp broodstock.

 

Source: Aquaculture Nutrition.  Nutritional Status of a Nereidid Polychaete Cultured in Sand Filters of Mariculture Wastewater.  P.J. Palmer (email paul.palmer@daff.qld.gov.au, Bribie Island Research Centre, P.O. Box 2066, Woorim, Queensland 4507, Australia), S. Wang, A. Houlihan and I. Brock.  Online Version Before Inclusion in an Issue.  Article first published online April 17, 2014.

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