Presentation on theme: "Symbiotic Relationships in Nature"— Presentation transcript:
1Symbiotic Relationships in Nature MutualismCommensalismParasitism
2Symbiosis: 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.
3MutualismBoth organisms benefit from the relationship.Win-Win
4Mutualism Racoon and Poison Ivy The raccoon eats the berries of the poison ivy and disperses the seeds as it poops.Both benefit.
5Mutualism 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
7Commensalism One organism benefits, the other one is unaffected. Win-Neutral relationship
8Commensalism Red Maple and Eastern Bluebird Bluebird nests in the maple.Maple is unaffected, bluebird benefitsCopyright, Mark Brand, UConn Plant Database
9Commensalism 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
10CommensalismPear-shaped puffball gets opened (and spores dispersed) by OpossumPuffball benefits, opossum is not affected.Copyright, Leon Shernoff
11Commensalism British soldier lichen provides shelter for centipede. Copyright, CCFB/photo by Kent LoefflerDr. Lutz Nevermann,
12Parasitism One organism benefits, the other one is negatively affected Win-Lose relationshipParasites rarely kill their hosts…it would require them to get another one!
13Parasitism Chigger lives and eats away at hognose snake. ATW from Kountry Life
14Parasitism Dogwood tree is parasitized by honeysuckle. Michael Clayton, Wisconsin State HerbariumDepartment of Botany, Iowa St. University
15Parasitism Bullfrog acts as a host of the big red worm parasite. Ohio State University