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colleen colleen
wrote...
Valued Member
Posts: 17077
12 years ago
What kinds of animals would you expect to have type 1, 2, or 3 functional responses? How should natural selection for better prey defense affect the height of functional response curves? How should natural selection for more effective predators affect the height of the curves? What net effect should natural selection on predator and prey populations have on the height of the curves?
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Sunshine ☀ ☼

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wrote...
Valued Member
12 years ago
Type 1: filter feeding aquatic organisms that feed on small prey; Type 2: consumers limited by prey availability at low prey densities and by prey handling time at high densities; Type 3: predators that require some learning to be effective on a prey species and/or that feed on prey that is well protected at low densities. Selection for prey defence should lower the height of functional response curves (due to reduced rate of predator food intake at all prey densities), while selection for more effective predators should raise the height (increased rate of predator food intake at all prey densities). Since both prey and predator are under natural selection, the net effect may be to keep the height of functional response fairly constant over time.
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