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There are three types of sybiosis: [[mutualism]], [[parasite|parasitism]], and [[commensalism]].

There are three types of sybiosis: [[mutualism]], [[parasite|parasitism]], and [[commensalism]].

In mutualism, both organisms benefit from the relationship. For example, the clownfish often resides within the tentacles of sea anemones. The clownfish has a place to live, and also wards off butterfly fishes, which eat sea anemones. [http://mangrove.nus.edu.sg/pub/seashore/text/265.htm]

In mutualism, both organisms benefit from the relationship. For example, the clownfish often resides within the tentacles of sea anemones. The clownfish has a secure place to live; It also wards off other fish which might make a meal of the anemone and crumbs of food dropped by the clownfish make up a for the prey fish that the anemone is denied. [http://mangrove.nus.edu.sg/pub/seashore/text/265.htm]

In parasitism, one organism benefits while the other suffers. An example is a [[mosquito]] biting a human.

In parasitism, one organism benefits while the other suffers. An example is a [[mosquito]] biting a mammal, this provides food for the mosquito but drains blood from the mammal.

In commensalism, one organism benefits while the other is unaffected. An example is how [[barnacles]] attach to [[whale | whales]] for transportation purposes. The whale is not harmed by this.

In commensalism, one organism benefits while the other is unaffected. An example is how [[Lichens]] grow on the trunks and branches of trees, this does no harm to the tree but supports the lichens in an area where they can receive sunlight.

 

These exist on a spectrum, sometimes the relationship between organisms can vary depending on conditions. Vibro bacteria are common in salt water and make up a large part of the digestive tract fauna of many marine organisms, however in high concentrations Quorum sensing genes turn on and the bacteria become aggressive and invade the host tissue.

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