Organismal Relationships
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Interactions between organisms occur due to factors such as…..
competition for food and resources mating defense asserting dominance
How many types of interactions are there
3
Competition has two types of interactions what are they…
territorality and and aggression
Territorality
occurs between male animals of the same species can involve fighting, sound, or scent established dominance and domain
Aggression
attack behavior between two animals
What are the types of predation out there
predator-prey herbivore-plant parasite-host
Predation
one organism consumes another to obtain energy
Symbiosis
association between two organisms that live together
What are the three types of symbiosis relationships
mutualism commensalism parasitism
Mutualism
both organisms benefit from the relationship
Examples of mutualism
clown fish and sea anemone crocodile and eygptian plover
Commensalism
one organism benefits and and the other is unaffected by the relationship
Examples of commensalism
shark and remora whale and barnacles
Parasitism
one organism benefits and the other is harmed by the relationship
Examples of parasitism
tick and dog tapeworm and human
The Niche
role of an organism in an ecosystem every organism fulfills a specific niche
What does competition for niches lead to
competitive exclusion
Competitive Exclusion Principle
two organisms cannot fill the same niche in a given ecosystem
What is competitive exclusion
when one organism excludes another from an ecosystem due to competition
What does competitive exclusion lead to
adaptation
Examples of invasive species
zebra mussel sea lamprey carp