Note
Our purpose was to collect information from which empirical models could be developed of the general effects of food concentration on a suite of responses including swimming behavior, feeding behavior, ingestion, assimilation, respiration, growth, survivorship, and fecundity. Measurement of ingestion and filtering rate is limited at low food concentrations by the methods available. Therefore, observations ofbehavior were included to extend the analysis to low food levels. To our knowledge, this was the first instance in which all the above parameters were estimated simultaneously on the same clone of animals under defined, reproducible laboratory conditions.