14.1 & 14.2
Consumes only animal tissue
Carnivores
Who was the entomologist who completed an experiment to control insect populations?
Carl Huffaker
What is Type I?
The number of prey captured per unit time by a predator increases linearly with an increasing number of prey.
Definition of optimal foraging theory.
The tendency of animals to harvest food efficiently, selecting food sizes or food patches that supply maximum food intake for energy expended.
Predators are also prey to other predatory species. True or false
True
A group of insects classified based on the egg-laying behavior of adult females and the development pattern of their larvae.
Parasitoids
What happened when the entomologist when only a single orange infested by the prey was introduced?
It eliminated the prey population and then died of starvation.
What is Type II?
The per capita rate of predation increases in a decelerating fashion reaching a maximum rate at some high prey population size.
Cost and benefits
What must a predator decide when going out to forager in an area where there are predators of its species?
Decide whether it's worth the risk of whether or not to feed.
What does c(Nprey) represent for the prey population equation?
The rate of predation
What made the entomologist's experiment a complex one?
The addition of barriers, rectangular tray of oranges, partially covered oranges that functioned as refuge for prey.
Increases.
What measures cost?
Time and energy expended in the act of foraging.
What would be a predator who is also a prey to another predator that was mentioned in the powerpoint?
A bird.
What exception is made for a true predator?
Seed predators and planktivores
What is the definition of Predator's Numerical Response?
The increased consumption of prey results in an increase in predator reproduction
Definition of aggregative response
Movement of predators into areas of high prey density.
What measures benefits?
Fitness
Who would that predator who hunts that predator be mentioned in the powerpoint?
An owl
What do the equations Alfred Lotka and Vittora Volterra represent?
Prey population and predator population.
What does Type III represent?
The rate of predation is low at first and then increases in a sigmoid fashion approaching an asymptote.
What is the latter referred to as...
Aggregative response.
The predator always chooses the ____ profitable prey item.
Most
What does an owl do when hunting for their prey?
They sit and wait.