Chapter 13-Predator and Herbivory

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14 Terms

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Introduced species

A species that is introduced to a region of the world where it has not historically existed.

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Biological control

Introductions of one species to help control the abundance of another species.

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Mesopredators

Relatively small carnivores that consume herbivores.

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Top predators

Predators that typically consume both herbivores and mesopredators.

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Lotka Volterra Model

A model of predator-prey interactions that incorporates oscillations in the abundance of predator and prey populations.

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Equilibrium isocline

The population size of one species that causes the population of another species to be stable, also known as zero growth isocline.

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Joint population trajectory

The simultaneous trajectory of predator and prey populations.

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Joint equilibrium point

The point at which the equilibrium isoclines for predator and prey populations cross.

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Functional Response

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

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Search Image

A learned mental image that helps the predator locate and capture food.

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Numerical Response

A change in the number of predators through population growth or population movement due to immigration or emigration.

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Crypsis Prey

Camouflage that allows prey to blend in better with their environment.

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Batesian Mimicry

Palatable species resemble unpalatable species.

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Coevolution

When two or more species affect each other’s evolution.