Model II major axis regressions of independent contrasts of body size indicators of males and females of <i>Sphenarium</i> species.

<p>The <i>P</i>-value from the comparison of each calculated slope <i>vs</i> slope = 1 (H_O: slope not different from 1). <i>β</i>, slope with lower and upper confidence intervals at 95% probability within parenthesis; <i>r</i>^<i>2</i>, explained variance of the model; <i>d</i>.<i>f</i>., degrees of freedom.