Extended Data Fig. 1: Population genetic summary statistics across native and introduced ranges.
(a–c) Boxplots compare measures of genetic diversity (π and θw) as well as Tajima’s D between native and introduced ranges. Sample size include 13 native populations and 38 introduced populations. (d–f) Boxplots further parse introduced population into individual introduction events. Each point represents the genome-wide average for a single population. Box edges in boxplots represent the interquartile range, center line represents the median, and upper and lower whiskers are the largest value either greater or less than, respectively, 1.5 times the interquartile range. There are 1, 4, 13, 4, 11, 8 and 10 populations included in the Africa, China, Europe, Japan, N. America, Oceania, and South America boxplots, respectively. (g, h) Coalescent reconstructions of effective population size through time as estimated through EPOS86. Neither native nor introduced populations exhibit any signatures of bottlenecks following introduction. Instead, most populations show signs of population expansion.
