Suzuki J, Ishida T
Primate Research Institute, Kyoto University, Inuyama, Aichis, Japan.
J Med Primatol. 2001 Jun;30(3):174-8. doi: 10.1111/j.1600-0684.2001.tb00006.x.
To obtain fundamental data on the endocrine background for the wild Japanese macaque (Macaca fuscata) growth profiles, we have measured plasma insulin-like growth factor 1 (IGF-1) concentrations of free-ranging and open-enclosed Japanese macaques from five different regions in their habitat. General features of the IGF-1 levels in those troops were: 1) an age-dependent increase in the young macaques and 2) distinctively higher values among several adult females. The age changes in IGF-1 levels during the adolescent period in the free-ranging Japanese macaques were similar to those in the caged Japanese macaques.
