Presentation on theme: "Symbiotic Relationships in Nature"— Presentation transcript:
1 Symbiotic Relationships in Nature MutualismCommensalismParasitism
2 Symbiosis: a definition Sym: From the greek/latin meaning “with”Bio: from the greek/latin meaning “to live” or “living”Symbiosis: A relationship where two organisms live together where at least one of the organisms benefits from the relationship.
3 MutualismBoth organisms benefit from the relationship.Win-Win
4 Mutualism Racoon and Poison Ivy The raccoon eats the berries of the poison ivy and disperses the seeds as it poops.Both benefit.
5 Mutualism Black-eyed Susan gets pollinated by Green lacewing. Both benefit…lacewing gets food (nectar) and Black-eyed Susan gets pollinated.James L. Reveal, Norton-Brown Herbarium, University of MarylandCopyright, Edward S. Ross
7 Commensalism One organism benefits, the other one is unaffected. Win-Neutral relationship
8 Commensalism Red Maple and Eastern Bluebird Bluebird nests in the maple.Maple is unaffected, bluebird benefitsCopyright, Mark Brand, UConn Plant Database
9 Commensalism Eastern Chipmunk and Soil mite The chipmunk is a mammal that burrows.The soil mite feeds off of leaf litter but cannot burrow itself.The mite uses the chipmunk’s tunnels to travel from place to place.Copyright, Ray Norton
10 CommensalismPear-shaped puffball gets opened (and spores dispersed) by OpossumPuffball benefits, opossum is not affected.Copyright, Leon Shernoff
11 Commensalism British soldier lichen provides shelter for centipede. Copyright, CCFB/photo by Kent LoefflerDr. Lutz Nevermann,
12 Parasitism One organism benefits, the other one is negatively affected Win-Lose relationshipParasites rarely kill their hosts…it would require them to get another one!
13 Parasitism Chigger lives and eats away at hognose snake. ATW from Kountry Life
14 Parasitism Dogwood tree is parasitized by honeysuckle. Michael Clayton, Wisconsin State HerbariumDepartment of Botany, Iowa St. University
15 Parasitism Bullfrog acts as a host of the big red worm parasite. Ohio State University