Slide 1

Warm UpCan you think of examples of relationships where both people/ organisms benefit?Can you think of examples of relationships where one organism benefits while the other is harmed?

In this photo the cleaner fish receives nourishment by dining off of the parasites and remaining food debris in the eels mouth. Is this an example ofPARASITISMMUTUALISMCOMMENSALISMHELPEXIT

Symbiotic RelationshipsAn interaction between organisms where at least one organism benefits from the relationship.

Types of Symbiotic Relationships COMMENSALISMMUTUALISMPARASITISM

Good for you, good for me!MUTUALISMExample: Clownfish and AnemoneThe anemone is poisonous, but the clownfish has a special coating. The anemone protects the clownfish and the clownfish cleans the anemone.COMMENSALISM Good for you, doesnt bother me!

Example: Remora and Shark

A remora attaches to a sharks body. It travels with the shark and feeds on the sharks leftovers. This does not hurt OR help the shark.

Good for you, hurts me!

Parasitism

Example: Botfly and Host

Bot flies lay theireggs in the skin ofmammals. Thelarvae eat thehosts skin untilthey are ready tofly away.

A wasp stings a caterpillar and injects its eggs. The eggs hatch and devour the caterpillar from the inside. Eventually they emerge when they transition from larvae to adult. The wasps could not survive without caterpillars.

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Orchids grow on the branches of high trees. These orchids get more water and sunlight than those on the ground. The tree is unaffected by the orchids presence. This relationship is an example of

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Cowbirds lay their eggs in other birds' nests. The hatched cowbird pushes the host eggs out of the nest and eat all the food the host parents bring.

Parasitism

In this interaction, the flower becomes pollinated by the insect, while the bee receives food in the form of pollen and nectarMUTUALISM

The Tickbird feeds off the ticks and flies that live on the hide of the African Black Rhinoceros. This helps the Rhino stay healthy and clean.MUTUALISM

#1#1The moss uses the water and nutrients on the tree to grow. The tree grows unaffected. COMMENSALISMCOMMENSALISMHermit Crab and Snail

A hermit crab lives inshells that are madeand then abandonedby snails. This neitherharms nor benefits thesnail.

Mosquitoes suck the blood from humans for food. Humans receive a bite and their skin becomes inflamed. ParasitismCurieClownfish live in a sea anemones tentacles. Clownfish clean the anemone. The tentacles also protect the Clownfish.

MUTUALISM

Shitake Mushrooms (fungus) absorb sugars and starches made by the birch tree. The tree is unharmed. Commensalism

The horsehair worm starts life as an egg laid in a puddle. The puddle dries out and a grasshopper eats the egg. The egg hatches and burrows through the gut of the grasshopper into its body cavity. The worm feeds off the nutritious blood of the insect and grows until it reaches adulthood. Then it starts producing chemicals which take over the brain of the insect and causes the insect to find water. The grasshopper drowns and then worm then exits the grasshopper and lives in the puddle, mating and laying more eggs. The cycle is repeated. Parasitism

Algae grows on the Tree Sloths fur. These algae help to camouflage the sloth against the tree.CommensalismThe wasp stings and paralyzes the spider and lays an egg on it. The larvae will consume the still-living spider from the inside, killing the spider and allowing the wasp to grow.

Parasitism

The moss uses the water and nutrients on the tree to grow. The tree grows unaffected. Commensalism