ELECTRONICAL LARVICULTURE NEWSLETTER ISSUE 92

15 NOVEMBER 1999


REPLACEMENT OF LIVING MICROALGAE WITH SPRAY-DRIED DIETS FOR THE MARINE MUSSEL MYTILUS GALLOPROVINCIALIS

C. Langdon, E. Onal-1999

Aquaculture, 180 (3-4) : 283-294
Abstract :

Growth experiments were carried out in which juvenile mussels Mytilus galloprovincialis were fed diets composed of spray-dried algal products (Sanders Brine Shrimp) which included Schizochytrium sp. (SZ; Docosa Gold), Spirulina platensis (Sp) [=Arthrospira platensis] and Hematococcus pluvialis (H) either alone or in combination with partial rations of living microalgae. Growth of mussels fed 1/4 ration of living algae plus a mixed supplement of 50/50% w/w SZ:Sp grew significantly (SNK; P<0.05) faster than mussels fed a full live algal ration. Furthermore, growth (both wet weight and dry organic weight increase) of mussels fed diets composed of either 70/30% w/w SZ: ground Sp (GSp; <20 micro m) or 25/50/25% w/w H:SZ:GSp was significantly (PLSD; P<0.05) greater than that of mussels fed an equal ration (by dry weight) of living Tahitian Isochrysis galbana.

(Coastal Oregon Marine Experimental Station, Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport, OR 97365, USA)

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