Every time the small cabbage white butterfly flaps its wings it has us to thank

Source: ScienceDaily

Through close examination of genetic variation and similarities between existing populations, and comparisons of historical data regarding infestations of Pieris rapae in Brassicaceae crops, a consortium of researchers document how humans helped the small cabbage white butterfly spread from Europe across the world. Scientists from eight institutions partnered with more than 150 volunteer citizen scientists from 32 countries to detail the pest’s range and current genetic diversity.

https://www.sciencedaily.com/releases/2019/09/190910194251.htm