Editing Population bottleneck (section)

== Founder effects ==
{{main|Founder effect}}
A slightly different form of bottleneck can occur if a small group becomes reproductively (e.g., geographically) separated from the main population, such as through a founder event, e.g., if a few members of a species successfully colonize a new isolated island, or from small captive breeding programs such as animals at a zoo. Alternatively, [[invasive species]] can undergo population bottlenecks through founder events when introduced into their invaded range.<ref>Lee, C. E. (2002). Evolutionary genetics of invasive species. ''Trends in ecology & evolution'', ''17''(8), 386-391.</ref>