Figure 2

Relationships between expected heterozygosity (He) of bullfrog populations and predictors in islands: (A) number of bullfrog raised (Spearman rank correlation, r = 0.906, P < 0.001); (B) residence time (r = 0.829, P < 0.001); (C) number of bullfrog farms (r = 0.698, P = 0.005); and (D) hunting pressures (r = −0.574, P = 0.032).