SPECIESSPECIES

INTERACTIONSINTERACTIONS

COMPETITIONCOMPETITION

What do What do organisms organisms compete for?compete for?

2 Types of Competition2 Types of Competition

IntraspecificIntraspecific Occurs between Occurs between members of the members of the same speciessame species

InterspecificInterspecific Occurs between Occurs between members of members of different different speciesspecies..

COMPETITIONCOMPETITIONGAUSE

CONNELL

REDUCING COMPETITION REDUCING COMPETITION BY RESOURCE BY RESOURCE PARTITIONINGPARTITIONING

BATS EAT THE INSECTS INTHE AIR, LIZARDS EAT THEINSECTS ON THE GROUND

Finches

Different species need same resources

MacArthur

Resource Sharing can lead Resource Sharing can lead to CHARACTER to CHARACTER DISPLACEMENTDISPLACEMENT

Differences develop between similar species due to competition

Similar species need similar or same resources

Large beaked can eat all size seeds, but will eat larger to reduce competition

With those that can only eat small or medium

PREDATIONPREDATION

and

and

Species InteractionsSpecies InteractionsPredator - PreyPredator - Prey

Predator/Prey Predator/Prey RelationshipsRelationships

Cheetah and Wildebeest Cheetah and Wildebeest http://www.youtube.com/watch?v=rXO3h6bpEUU&feature=related

Baboom/Flamingo Baboom/Flamingo http://www.youtube.com/watch?v=b995_dC6iDM

Physiological

Structural

Coral Snake Scarlet King(venomous) (non-venomous) Red next to Black - safe for Jack;Red next to Yellow - kill any fellow.

Viceroy Monarch(edible) (inedible)

Mimicry Mimic OctopusMimic Octopus http://www.youtube

.com/watch?v=7Zh50pfG7d8

(a) A flower mantidin Malaysia

(b)A stick mantidin Africa

Cryptic Coloration

PLANT - HERBIVOREPLANT - HERBIVORE

Poison Ivy Carrion Flower

Plants for Medicinal Purposes

cleanser

anemia

Good sleepLaxative (skin)Diarrhea (no skin)

Soothes Or laxative

SYMBIOSISSYMBIOSIS 3 types:3 types: ParasitismParasitism MutualismMutualism CommensalismCommensalism

PARASITISMPARASITISMEctoparasites

Endoparasites

Maggots in my head Maggots in my head http://www.youtube.com/whttp://www.youtube.com/watch?atch?v=V2Ac6RYSvo8&feature=v=V2Ac6RYSvo8&feature=channelchannel

Parasite in Lungs Parasite in Lungs http://www.youtube.com/whttp://www.youtube.com/watch?atch?v=Im_5xQu5GbA&feature=v=Im_5xQu5GbA&feature=channelchannel

MUTUALISMMUTUALISM

Caterpillar and ant Caterpillar and ant http://www.youtube.com/wahttp://www.youtube.com/watch?v=z3bWqlPLpMgtch?v=z3bWqlPLpMg

Buffalo and Egret Buffalo and Egret http://www.youtube.com/wahttp://www.youtube.com/watch?v=8BEKrc-aXF8tch?v=8BEKrc-aXF8

COMMENSALISMCOMMENSALISM

Shark and Remora Shark and Remora http://www.youtube.comhttp://www.youtube.com/watch?v=e4xrdeagyYM/watch?v=e4xrdeagyYM

SUCCESSIONSUCCESSION

Primary Primary SuccessionSuccession

http://www.youtube.com/http://www.youtube.com/watch?v=k03vxRYsJ4Ywatch?v=k03vxRYsJ4Y

http://www.pbs.org/http://www.pbs.org/wgbh/nova/nature/wgbh/nova/nature/crisafulli-blast-zone.htmlcrisafulli-blast-zone.html

SecondarSecondary y

SuccessiSuccessionon