Ch 43 Species interactions

Competition

-,-

• 2+ species rely on the same limited resources

• one will be driven to extinction

amensalism

-,0

• one organism restricts the success of another without being affected themselves

mutualism

+,+

• both species benefit

commensalism

+,0

• one organism benefits while the other is unaffected

parasitism

+,-

• one species uses another to its advantage and harm it

ecological niche

space, environmental conditions, and resources a species need to survive and reproduce

predation

+,-

feeds on the other, killing it

herbivory

+,-

feeds on the other without really killing it

biological mimicry

• species develop the ability to look like another either for defense or offense purposes

batesian mimicry

occurs when a prey species resembles another species that has a superior protective capability

mullerian mimicry

occurs when species that have some protection against predators resemble one another