Correlation of kidney weight and volume and selected skeletal parameters to sex in the adult rhesus monkey (Macaca mulatta)

This report outlines a comparison of renal weight and volume and selected s keletal parameters to sex in 22 adult male and 156 adult female rhesus maca ques. Means and standard deviations for kidney weight and volume, body weig ht, and radiographic measurements for both males and females are reported. Ninety-five percent confidence intervals and P-values for the mean differen ces between the sexes for these parameters were also compiled. Male monkeys were larger, but had kidneys of similar size to those of the females. Join t distributions of the radiographic measurements of the first lumbar verteb ra and the skull showed that males were larger in both measurements. The di stributions of these parameters were clearly separate in males and females, while joint distributions of kidney weight and volume for males and female s overlapped almost completely. We found that, regardless of age, sex, weig ht, or skeletal size, all normal adult rhesus monkeys generally have simila r-sized kidneys.