15 SEPTEMBER 1999
EFFECT OF ALGAL HARVEST PHASE ON LARVAL AND POST-LARVAL GROWTH OF GIANT SCALLOPS (PLACOPECTEN MAGELLANICUS) IN A COMMERCIAL HATCHERY
C.M. Ryan, J. Parsons, P. Dabinett-1998
Bulletin of the Aquaculture Association of Canada, 98-2 (contributing papers Aquaculture Canada '98): 65-67
Abstract:
The effect of diets of algae harvested from log and near stationary phase cultures on growth of scallop larvae and spat, and the relationship of spat growth to lipid class composition of the diet was investigated. In 3 out of 4 experiments, larvae fed log phase algae were significantly larger than those fed stationary phase algae. Similar results were obtained with spat from four feeding trials. Lipid analysis of the diet indicated that significant positive correlations were obtained for spat growth and quantity of methyl ketones and sterols, and significant negative correlations were obtained for spat growth and alcohols, ethyl ketones, free fatty acids, hydrocarbons, total acyl lipids, phospholipids, and sterol and wax esters. Acetone mobile polar lipids, diacylglycerols, and triacylglycerols were not significantly correlated with growth.
(Fisheries and Marine Institute of Memorial University of Newfoundland, P.O.Box 4920, St. John's, NF, Canada A1C 5R3)