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Eco Evo Exam3(c.14)

Definitions

TermDefinition
Mesopredators Relatively small carnivores that consume herbivores.
Top predators Predators that typically consume both herbivores and mesopredators.
Lotka-Volterra model A model of predator-prey interactions that incorporates oscillations in the abundances of predator and prey populations and shows predator numbers lagging behind those of their prey.
Equilibrium isocline The population size of one species that causes the population of another species to be stable. Also known as Zero growth isocline.
Joint population trajectory The simultaneous trajectory of predator and prey populations.
Joint equilibrium point The point at which the equilibrium isoclines for predator and prey populations cross.
Functional response The relationship between the density of prey and an individual predator's rate of food consumption.
Type I functional response A functional response in which a predator's rate of prey consumption increases in a linear fashion with an increase in prey density until satiation occurs.
Type II functional response A functional response in which a predator's rate of prey consumption begins to slow down as prey density increases and then plateaus when satiation occurs.
Type III functional response A functional response in which a predator exhibits low prey consumption under low prey densities, rapid consumption under moderate prey densities, and slowing prey consumption under high prey densities.
Search image A learned mental image that helps the predator locate and capture food.
Numerical response A change in the number of predators through population growth or population movement due to immigration or emigration.
Crypsis Camouflage that either allows an individual to match its environment or breaks up the outline of an individual to blend in better with the background environment.
Warning coloration A strategy in which distastefulness evolves in association with very conspicuous colors and patterns. Also known as Aposematism.
Batesian mimicry When palatable species evolve warning coloration that resembles unpalatable species.
Mullerian mimicry When several unpalatable species evolve a similar pattern of warning coloration.
Coevolution When two or more species affect each other's evolution.
Created by: BriawnaW