Symbiotic relationships in coral reefs
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Symbiotic Relationships in Coral Reefs. Symbiosis. “Living Together”. Types of Symbiosis. Mutualism Both the symbiont and host benefit. Commensalism The symbiont benefits with little effect on the host. Parasitism The symbiont benefits to the detriment of the host. Aegism

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Symbiosis

Symbiosis

“Living Together”


Types of symbiosis
Types of Symbiosis

  • Mutualism

    • Both the symbiont and host benefit.

  • Commensalism

    • The symbiont benefits with little effect on the host.

  • Parasitism

    • The symbiont benefits to the detriment of the host.


  • Aegism

    • An association for protection

  • Inquilism

    • One organism shelters within another organisms

  • Endoecism

    • One org shelters in the burrow or defensive shelter of another

  • Phoresis

    • One org uses another for transportation

  • Epizoism

  • - A sessile org lives on top of another



Obligate Relationship:

Relationship is necessary for organism to survive

Ex. coral and zooxanthellae

Facultative Relationship:

Can survive without symbiont, but not as well

Ex. anemone fish and anemone




  • Zooxanthellae give corals:

  • Increase coral growth by enhancing calcification process

  • Provide energy

  • Give oxygen

  • Coral give zooxanthellae:

  • Nitrogen waste

  • A place to live

  • Carbon dioxide waste

  • Protection through their hard skeletons and stinging cells

  • Harmful UV light is filtered by coral pigments


Trapezia crab coming out of its host coral (Pocillopora damicornis) to attack the arm of an invading Crown of Thorns Starfish









Camouflage

Decorator Crab

Sponge crab









Petroglyph shrimp and porites lobata
petroglyph shrimp and Porites lobata










Epitomium snails and mushroom corals
Epitomium snails andmushroom corals




Coral zits on porites compressa
coral “zits” on Porites compressa





Inquiry

  • Define mutualism, commensalism, and parasitism.

  • Provide examples of each.

  • What are the benefits the zooxanthellae and coral receive?


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