Sci Rep. 2015 Dec 10;5:18211. doi:10.1038/srep18211

Shinzato C, Mungpakdee S, Arakaki N, Satoh N.

Genome-wide SNP analysis explains coral diversity and recovery in the Ryukyu Archipelago.

Single population (K = 1 in ADMIXTURE analyisis). PCA on 905,561 SNPs from 122 individuals shows four subpopulations corresponding roughly to island groups and suggests migration of only a few individuals.