Indices of Body Fat Deposition in Wild Japanese Monkeys

Patterns of body fat deposition and reliability of fat indices in wild Japanese monkeys (Macaca fuscata) were examined using 50 (22 females and 28 males) adult (≥5 years of age) specimens. The body fat reserve (%), which was calculated as [amount of whole visible body fat]/[carcass body weight]×100, is highly correlated with subcutaneous fat and mesentery (including omentum) fat. Body fat reserve was estimated as 302×(mesentery fat/body weight)-0.62. Body fat reserve exhibits a significant seasonality in both sexes.