Thresholds for growth in Daphnia magna with high and low phosphorus diets
Limnology and Oceanography
Algae that have a low growth rate with a low mineral content are inferior foods for Daphnia growth, but these foods are not inferior for maintenance metabolism. The C per unit volume of lowgrowth-rate algal food necessary for zero body growth was similar to that of high-growth-rate food. Maintenance metabolism requires mainly energy, while body growth requires other essential substances; thus, they are separate influences of food quality.
Sterner, Robert W. and Judy L. Robinson. 1994. "Thresholds for growth in Daphnia magna with high and low phosphorus diets." Limnology and Oceanography 39, (5): 1228-1232. http://nsuworks.nova.edu/cnso_bio_facarticles/127