a1 M.A.F.F. Fisheries Experiment Station, Conwy, Gwynedd
a2 N.E.R.C. Unit of Marine Invertebrate Biology, Marine Science Laboratories, Menai Bridge, Gwynedd
Crassostrea gigas spat were fed diets of Pavlova lutheri, Dunaliella tertiolecta or Tetraselmis suecica. The D. tertiolecta diet contained no fatty acid longer or more unsaturated than linolenic acid (18:3ω3) and the T. suecica diet was deficient in decosahexaenoic acid (22:6ω3). The algal diets were supplemented with micro-encapsulated triolein, oyster lipid extract or 22:6ω3. Spat were also starved or fed carbohydrate diets.
p1 Present address: Mariculture Centre, College of Marine Studies, University of Delaware, Lewes, U.S.A.
p2 Present address: M.A.F.F., Fisheries Laboratory, Burnham-on-Crouch, Essex, CMo 8HA.