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Ring Species

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Ring species is a term introduced by Arthur Cain when elaborating on speciation [1]. Ring species consist of overlapping populations with only subtle differences. The traits change continuously, so that the more geographically distant the more pronounced the differences. Only on both sides of a geographical barrier there are sharp differences between the populations' traits.

A ring species is illustrated by the picture below.
Species Ring
The mountain ridge symbolizes a geographical barrier. But a geographical barrier can be any geographical obstacle to a species dissemination depending on a species capabilities to move, a river or a highway for instance.


Tags: Speciation Theory


Categories: Evolutionary Biology

 
   

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