TLS Online TPP Program

#Id: 9109

#Unit 10. Ecological Principles

Prey defenses used against predators

TLS Online TPP Program

#Id: 9110

#Unit 10. Ecological Principles

Predator-Prey Interactions

Models of predation need to consider predator effect on prey populations, and prey effects on predator population.

Also need to consider the time spent searching, subduing and consuming prey

TLS Online TPP Program

#Id: 9111

#Unit 10. Ecological Principles

Growth rate of the prey in the presence of predators

TLS Online TPP Program

#Id: 9112

#Unit 10. Ecological Principles

Growth rate of the predators

TLS Online TPP Program

#Id: 9113

#Unit 10. Ecological Principles

Functional response The relationship between the density of prey and an individual predator’s rate of food consumption

TLS Online TPP Program

#Id: 9114

#Unit 10. Ecological Principles

A type I functional response, occurs when a predator’s rate of prey consumption increases linearly with an increase in prey density until the predator is satiated.

The type II functional response, occurs when the number of prey consumed slows as prey population density increases. 

In a type III functional response, prey consumption is low when prey population density is low, consumption is rapid when prey population density is moderate, and prey consumption slows when prey population density is high.