Fig. 1

Genome of South China tiger. a A male South China tiger. b Circos plot of South China tiger genomic features. Outer to inner: pseudo-chromosome, gene density (500-kb window) (with higher gene density indicated by higher blue column), GC content (500-kb window), and SNP density (500-kb window). c Distribution of the captive South China tigers in China. Yellow circles show 15 city locations of the captive South China tigers, including Luoyang, Zhengzhou, Linyi, Suzhou, Shanghai, Hangzhou, Nanchang, Chongqing, Chengdu, Guiyang, Changsha, Fuzhou, Longyan, Shaoguan, and Guangzhou. Circle size is proportional to the number of South China tigers in each city. All data are from the South China tiger studbook (2020). Red cross represents the sampling site of the South China tigers in our study