Figure legends
Figure 1 Sampling sites and introduction pathways ofCarassius auratus in this study. The figures in brackets below site names represents the number of diploid and triploid samples. The two dotted lines represents main transportation routes (Qinghai-Tibet Highway and Sichuan-Tibet Highway) connecting Tibet and its east.
Figure 2 The maximum-likelihood phylogenetic trees based on mitogenome sequences of diploids (a) and triploids (b).
Figure 3 Principal component analysis based on genomic LD-pruned SNPs for diploids (a), triploids (b) and all samples (c).
Figure 4 Population structure analysis based on genomic LD-pruned SNPs for diploids (a) and triploids (b).
Figure 5 Genome-wide genetic diversity of invasive and nativeCarassius auratus at individual (a) and population (b) levels. The p value of the paired-sample t -test in figure a was showed for each pair-wise comparison. The light red and light blue bars figure b represented the invasive and native populations, respectively.
Figure 6 The genome-wide distribution of ROHs detected in invasive diploids (above) triploids (below).
Figure 7 Reconstruction of the population size histories with the SMC++ method.
Figure 8 Detection of putative signatures of selective sweeps between invasive and source populations by sliding-window analysis of the F ST and |XP-EHH| values in diploids (a and b) and triploids (c and d). Dashed lines indicated genome-wide 1% outlier cut-off.