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.