Interactions Between Species

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• Symbiotic Circle

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Write down in your own words the way the organisms

relate to one another in the videosWho is benefited, harmed, or neither?

ExplainSymbiotic Relationships

Commensalism: One organism is benefitted by relationship and the other is neither harmed nor benefitted.

Mutualism: Both organisms are benefitted by relationship and neither are harmed

Parasitism: One benefits and the other is harmed.

Predation: One organism preys or hunts the other organism.

Parasitism

Leeches attach to host organism and suck its

blood!

The host is harmed and the leech is benefited

by a free meal!

What’s the relationship?Woodpecker and Tree ants

• In the spring, the southern Rufous woodpecker and the black tree ant truce for a short while during egg laying.

• The ants protect the bird’s eggs from attacks by the nest

• The bird protects the ants’ nest from other birds while the chosen bird is nesting there.

What’s the relationship?Cattle Egrets and Cattle

• Livestock movement cause insects to stir up in grazing fields.

• As the insects are stirred up, the cattle egrets following the livestock catch and feed upon them.

What’s the relationship?Oxpecker and Zebra

• Oxpeckers obtain a meal while the Zebra is freed of lice, ticks, and flees.

What’s the relationship?Plover Bird and Crocodile

• While obtaining a meal, the Plover bird cleans the crocodile’s teeth and helps prevent infections.

Tick on a Human

ElaborateMalaria Virtual Tour

• Malaria Life Cycle

• http://malaria.wellcome.ac.uk/node40036.html

Evaluate

• A symbiotic relationship that occurs when both member benefit is called?

Spanish Moss on Tree

• The Spanish moss benefits, but the tree is neither harmed or benefited.

Which best represents mutualism?

• Bull snake/mouse

• White-tailed deer/grass

• Hummingbird/blossom

• Spadefoot toad/cricket

What symbiotic relationship is it?

• An oakworm catepillar feeds on the leaves of an oak tree. This type of interaction is: