Symbiosis

Mutulistic relationship between a giant tortoise and bird © Mark Altman

Symbiosis describes a long term relationship between two individuals of different species. This relationship can be mutualistic (where both individuals benefit), parasitic (where one organism benefits at the other’s expense) or commensalistic (where one organism benefits but not at the expense of the other).

Symbiosis features on these pages:

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Glossary of Galapagos