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Definition of Bottleneck:
Bottleneck is a sudden decrease of the population in size, usually due to adverse environmental factors. During bottlenecks, a population shrinks temporarily and therefore loses genetic variation. Bottlenecks also result from alterations in gene flow such as decreased migration, expansions into new habitats, or population subdivision.[1]
This is the common definition for Bottleneck, other definitions can be discussed in the article

See Wikipedia article Population bottleneck for further details.


  1. Solomon, E. P., Berg, L. R., & Martin, D. W. (2002). Biology, sixth edition. (N. Rose, Ed.). Stamford, CT: Thomson Learning.

The main author of this article is Stamoulis, Antonios
Please note that others may also have edited the contents of this article.

Citation: Stamoulis, Antonios (2020): Bottleneck. Available from [accessed on 17-07-2024]