One example of commensalism is the relationship between Patiria miniata, known as the Bat star, and a segmented worm called Ophiodromus pugettensis. The star has several grooves protruding from its mouth. Some Ophiodromus pugettensis worms live inside these grooves, but they do not harm the starfish.Continue Reading
Commensalism is defined as a type of symbiosis that gives one organism an advantage without helping or hurting the other organism. In the case of the Bat star and the worms, the grooves in the starfish provide a safe place for the worms to reside. Because the starfish does not derive any benefit from the worms living there, the relationship is commensalistic rather than mutualistic.
Humans also participate in commensalistic relationships. For example, the Demodex folliculorum mite makes its home in human hair follicles, while Demodex brevis lives in oil-secreting glands on the skin. Another example of commensalism in humans is the presence of Streptococcus pyogenes bacteria in the digestive tract. The bacteria do not harm the digestive tract but they do not have any helpful functions. This commensalistic relationship can quickly turn parasitic if the bacteria migrate from the digestive tract to other parts of the body. If Streptococcus pyogenes moves into the throat, it causes strep throat.Learn more about Biology
An example of mutualism in the desert is the relationship between the desert mistletoe plant and the Phainopepla bird. As the bird eats the berries produced by the desert mistletoe, it passes undigested seeds. This ensures the survival of the desert mistletoe.Full Answer >
Three types of symbiotic relationships are mutualism, commensalism and parasitism. In symbiosis, at least one member of the pair benefits from the relationship, while the host may also benefit, may be unaffected or may be harmed.Full Answer >
There are three types of symbiotic relationships that occur in the desert: mutualism, commensalism and parasitism. Examples are, respectively, yucca plants and yucca moths, dung beetles and the dung of other animals, and fleas and their hosts.Full Answer >
The three major types of symbiosis are mutualism, where both species benefit, commensalism, where one species benefits and the other is unaffected, and parasitism, where one species benefits and the other is harmed. Symbiotic relationships can occur within an organism's body or outside of it.Full Answer >