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In ecology, ammensalism occurs when one species hurts another, but does not benefit from this interaction. It is a -/0 relationship. For example, algal blooms can lead to the death of many species of fish, however the algae do not benefit from the deaths of these individuals.
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What is the difference between commensalism and ammensalism?
In commensalism, one organism benefits while the other is unaffected, whereas in ammensalism, one organism is unaffected and the other is negatively affected.
What are example of microbial ammensalism?
The bread mold Penicillium is a common example of this; penicillium secrete penicillin, a chemical that kills bacteria.A second example is the black walnut tree (Juglans nigra), which secrete juglone, a chemical that harms or kills some species of neighbouring plants, from its roots.A third simple example is when sheep or cattle make trails in grass that they trample on, and without realizing, they are killing the grass.Source: http://en.wikipedia.org/wiki/Biological_interaction#Amensalism
The three main types of symbiotic relationships in nature?
The four types of symbiosis are commensalism, mutualism, parasitism, and ammensalism. Commensalism is a relationship between two individuals of different species where one benefits and the other is not harmed or helped. Ex. spiders building a web on plants Mutualism is a relationship between two organisms of different species where both benefit. Ex. Goby fish live with shrimp- shrimp makes a burrow where both live and in danger goby fish touches shrimp with its tail to warn it because the shrimp is blind. Parasitism is a relationship between two organisms when one benefits and the other is harmed. Ex. Tick feeding on the blood of an animal such as a human or a dog. Ammensalism is a relationship when one species is obliterated and the other is unaffected. Ex. Sapling growing underneath a mature tree- mature tree deprives sapling of necessary sunlight, rainwater, and deplete soil nutrients.
