Commensalism

Definition

A symbiotic relationship between two organisms of different species in which one benefits while the other is not significantly harmed or helped.

Etymology

From Latin 'com-' meaning 'together' and 'mensa' meaning 'table', implying eating together at the same table.

Example

Insects that live in close association with larger animals, such as mites living on beetles, often exhibit commensalism.

Related Terms

• Mutualism
• Parasitism
• Symbiosis

Usage Notes

Commensalism is distinct from mutualism, where both species benefit, and parasitism, where one species benefits at the expense of the other.