Amensalism

Definition

Amensalism is a type of ecological interaction where one organism is inhibited or destroyed while the other remains unaffected. This relationship often involves the release of a substance by one organism that inhibits or kills another organism.

5 Must Know Facts For Your Next Test

1. Amensalism typically occurs in prokaryotic communities, including between bacteria and fungi.
2. An example of amensalism is the production of antibiotics by certain bacteria that inhibit or kill other bacterial species.
3. Amensalism can influence microbial community structure and dynamics by suppressing susceptible organisms.
4. This interaction can be part of competitive strategies to outcompete potential rivals for resources.
5. Amensalism plays a role in soil microbiomes, affecting nutrient cycling and plant health.

Review Questions

• What is amensalism and how does it affect interacting organisms?
• Give an example of amensalism in prokaryotic communities.
• How does amensalism influence microbial community structure?

Related terms

Mutualism:

A symbiotic relationship where both organisms benefit.

Commensalism:

A relationship where one organism benefits while the other remains unaffected.

Parasitism: A relationship where one organism benefits at the expense of the other.