J. Batt, R. Melanson, S. Kirk, J. Castell, T. Blair
Abstract:
The influence of several different commercial enrichment diets on the composition (particularly lipid and fatty acid) of rotifers (Brachionus plicatilis) and the subsequent effects on the growth, survival and lipid composition of larval winter flounder (Pseudopleuronectes americanus) fed the enriched rotifers were the subject of this study. The survival of the fish larvae did appear to be directly related to the levels of docosahexaenoic acid (DHA) in the enriched rotifers. In addition to the effect of dietary treatment, there appeared to be individual tank influences on larval culture and survival success. These were reflected by within and among treatment differences in total larval lipid content. The lipid content of the larvae perhaps indicates general feeding success and might be used as an early warning index of larval nutrition status.
(Sambro Fisheries Limited, Sambro Post Office, Halifax, NS B0J2Y0, Canada)