Figure 3. Illustration of optimal prey preference values (\(p_{Z}^{*}\)) for the case of adaptive zooplankton (black solid line) in comparison to maximum (a) zooplankton biomass, (c) relative contribution of parasite (\(F\)) to total prey, indicated by a pink solid line, and (b) minimum total prey biomass (\(P_{E}+F\)) indicated by a pink dotted line. Panel (d) illustrates the optimal prey availability following the optimal fitness strategy\(\frac{\partial w_{Z}}{\partial p_{Z}}=0\) (dash-dotted line) and its dependence on relative contribution of fungi to total prey biomass. Solid lines indicate the calculated values for the adaptive preference case with increasing \(N_{\max}\) under Regime I. The intersection point of calculated and optimal values is indicated by a point and represents the equilibrium value reached under Regime II.