4/07/2011

9.Define the different forms of community interaction: competition, commensalism, mutualism, predation, parasitism Give an example and a picture for each

Competition is a contest between individuals group of animals for their territory, or a location of resource. Such as food resources. One example of competition is when different species of fish were inside the same fish tank. One will attack the other to eat, and produce stronger species. Commensalism is a class of relationship between two organisms where one organism benefits but the other is neutral.An example of commensalism is a flatworm attaching to the horse crab and eating the crab's food while the crab is unaffected. Mutualism is when two organisms interact with each other and both derives a fitness benefits. One of the example for mutualism is when many ants are found in the vicinity of aphids. The ants feed on the sugary fluid released by the aphids, and the aphids are protected by the ants. Predation is a way of life that stronger animals attack weaker animals and eat to survive. Example for predation is when hunters are hunting for birds. Parasitism is a type of relationship between animals that they both get benefits from eachother. An example of parasitism is a flea and a dog. The flea sucks blood from the dog and so the dog is harmed.

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