Correlation of log population size and sex ratio (F/M) of 30 populations on the fragmented islands (closed circle) and one population on the mainland (open circle), The Pearson correlation coefficient <i>r</i> = 0.661, <i>p</i><0.001.

<p>Correlation of log population size and sex ratio (F/M) of 30 populations on the fragmented islands (closed circle) and one population on the mainland (open circle), The Pearson correlation coefficient <i>r</i> = 0.661, <i>p</i><0.001.