A comparison of morphometry from captive and free-ranging Macaca mulatta

The paper addresses the effect of captivity on body size in Macaca mulatta, comparing a captive with the free-ranging population from which it was derived. The captive population, which was housed socially, was smaller in most linear measures and in body mass, particularly in young up to 13 month old animals. Nutritional differences in the diet may be at least partially responsible; the captive population was fed a lower level of total protein. Measurements for captive individuals < 24 hours to 36 months old are discussed in detail.