Figure 2.

Fits (solid line) of the net production model in table 1 to data on growth (open circles) and reproduction (filled circles) for individual Daphnia pulex grown in 100 ml containers at 20°C and at four food levels (indicated on panels). The dashed lines are fits with an alternative form of functional response involving Kooijman's ‘synthesizing unit’. Data from Nisbet et al. (2004).