Transcript Predator/Prey Relationships

Predator/Prey
Relationships
Predator/Prey
Predator
 Predator - Any animal that
catches, kills and eats any
other animal.
Prey
 Prey – any animal that is
caught, killed or eaten by
any other animal.
Predation
 An interaction between species
in which one animal (the
predator) captures and feeds on
another animal (the prey).
 birds of prey can play an important
role in regulating the population
size of mice, voles and other small
mammals.
 Predation is an example of a density dependent
limiting factor:
 Density dependent limiting factors depend on
population density
 Predators can affect the size of prey populations in a
community and determine the places prey can live
and feed.
Predation effects on
Population
Predation Effects on
Population
 As the population of the prey increases then the
predator population will increase.
 As the predators increase, the number of prey
decreases.
Predation effects on
Population
 Why is there a time delay between the increase in
prey and the increase in predators?
 What would affect the number of hares besides the
predators?
 Why would the number of lynx be controlled by the
number of hares?
 http://www.youtube.com/watch?v=LU8DDYz68k
M