Transcript Powerpoint
SPECIES INTERACTIONS COMPETITION What do organisms compete for? 2 Types of Competition Intraspecific Occurs between members of the same species Interspecific Occurs between members of different species. COMPETITION GAUSE C O N N E L L REDUCING COMPETITION BY RESOURCE PARTITIONING MacArthur Different species need same resources Finches BATS EAT THE INSECTS IN THE AIR, LIZARDS EAT THE INSECTS ON THE GROUND Resource Sharing can lead to CHARACTER DISPLACEMENT 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 PREDATION and and Species Interactions Predator - Prey Predator/Prey Relationships Cheetah and Wildebeest http://www.youtube.com/wat ch?v=rXO3h6bpEUU&feature =related Baboom/Flamingo http://www.youtube.com/wat ch?v=b995_dC6iDM Physiological Structural Coral Snake (venomous) Viceroy (edible) Scarlet King (non-venomous) Red next to Black - safe for Jack; Red next to Yellow - kill any fellow. Monarch (inedible) Mimicry Mimic Octopus http://www.youtube.co m/watch?v=7Zh50pfG7 d8 (a)A flower mantid in Malaysia (b)A stick mantid in Africa Cryptic Coloration PLANT - HERBIVORE Poison Ivy Carrion Flower Plants for Medicinal Purposes Soothes Or laxative anemia cleanser Good sleep Laxative (skin) Diarrhea (no skin) SYMBIOSIS 3 types: Parasitism Mutualism Commensalism PARASITISM Ectoparasites Endoparasites Maggots in my head http://www.youtube.com/watch?v =V2Ac6RYSvo8&feature=channel Parasite in Lungs http://www.youtube.com/watch?v =Im_5xQu5GbA&feature=channel MUTUALISM Caterpillar and ant http://www.youtube.com/watch?v= z3bWqlPLpMg Buffalo and Egret http://www.youtube.com/watch?v= 8BEKrc-aXF8 COMMENSALISM Shark and Remora http://www.youtube.com/w atch?v=e4xrdeagyYM SUCCESSION Primary Succession http://www.pbs.org/wgbh/nova/ nature/crisafulli-blast-zone.html http://www.youtube.com/watch?v =k03vxRYsJ4Y Secondary Succession