The talus is used in many kinds of studies on primates including fossil species, and most of the individuals studied are adults. One of the most important indicators of adult individuals is epiphyseal closure; however, because the talus has no epiphysis, it is difficult to determine the maturity of the talus. The calcaneus has one epiphysis, and it has been used along with the talus in some analyses. The objective of this study was to quantify the maturation trajectory of the talus using epiphyseal closure of the calcaneus as a benchmark. We used 71 skeletons of free-ranging Macaca fuscata fuscata males of known day-age. We did not identify any size increase with age in talar dimensions among specimens with complete calcaneal epiphyseal closure. Thus, in male M. fuscatafuscata, the maturation trajectory of the talus can be quantified using epiphyseal closure of the calcaneus as a benchmark.

Keywords:
Talus, Calcaneus, Talar maturity, Calcaneal epiphysis, Epiphyseal closure, Macaca fuscata
1.
Bayley N (1943). Size and body build of adolescents in relation to rate of skeletal maturing. Child Development 14: 47–90.
2.
Clemente CD (1985). Gray’s Anatomy, 30th American ed., pp 303–304. Philadelphia, Lea & Febiger.
3.
Dagosto M (1983). Postcranium of Adapis parisiensis and Leptadapis magnus (Adapiformes, Primates): adaptational and phylogenetic significance. Folia Primatologica 41: 49–101.
4.
Dagosto M, Terranova CJ (1992). Estimating the body size of Eocene primates: a comparison of results from dental and postcranial variables. International Journal of Primatology 13: 307–344.
5.
Fedigan LM (1991). Life span and reproduction in Japanese macaque females. In The Monkeys of Arashiyama: Thirty-Five Years of Research in Japan and the West (Fedigan LM, Asquith PJ, eds.), pp. 140–154. New York, SUNY Press.
6.
Fedigan LM, Pavelka MS (2001). Is there adaptive value to reproductive termination in Japanese macaques? A test of maternal investment hypotheses. International Journal of Primatology 22: 109–125.
7.
Fooden J, Aimi M (2005). Systematic review of Japanese macaques, Macaca fuscata (Gray, 1870). Fieldiana Zoology 104: 1–200.
8.
Ford SM (1988). Postcranial adaptations of the earliest platyrrhine. Journal of Human Evolution 17: 155–192.
9.
Gebo DL, Dagosto M (1988). Foot anatomy, climbing, and the origin of the Indriidae. Journal of Human Evolution 17: 135–154.
10.
Gebo DL, Sargis EJ (1994). Terrestrial adaptations in the postcranial skeletons of guenons. American Journal of Physical Anthropology 93: 341–371.
11.
Gebo DL, Dagosto M, Beard KC, Qi T (2001). Middle Eocene primate tarsals from China: implications for haplorhine evolution. American Journal of Physical Anthropology 116: 83–107.
12.
Gebo DL, Dagosto M, Rose KD (1991). Foot morphology and evolution in early Eocene Cantius. American Journal of Physical Anthropology 86: 51–73.
13.
Hamada Y (2008). Body growth and ageing, Macaca fuscata fuscata. In Mammalogy in Japan (Takatsuki S, Yamagiwa J, eds.), vol 2: Middle- and Large-Sized Mammals Including Primates, pp 53–75. Tokyo, University of Tokyo Press.
14.
Lisowski FP (1967). Angular growth changes and comparisons in the primate talus. Folia Primatologica 7: 81–97.
15.
Nakatsukasa M, Takai M, Setoguchi T (1997). Functional morphology of the postcranium and locomotor behavior of Neosaimiri fieldsi, a Saimiri-like Middle Miocene platyrrhine. American Journal of Physical Anthropology 102: 515–544.
16.
Nakamichi M, Kojima Y, Itoigawa N, Imakawa S, Machida S (1995). Interactions among adult males and females before and after the death of the alpha male in a free-ranging troop of Japanese macaques. Primates 36: 385–396.
17.
Rose KD, Rana RS, Sahni A, Missiaen P, Singh L, Smith T (2009). Early Eocene primates from Gujarat, India. Journal of Human Evolution 30: 1–39.
18.
Shigehara N (1980). Epiphyseal union, tooth eruption, and sexual maturation in the common tree shrew, with reference to its systematic problem. Primates 21: 1–19.
19.
Simpson MR, Asling CW, Evans HR (1950). Some endocrine influences on skeletal growth and differentiation. Yale Journal of Biology and Medicine 23: 1–27.
20.
Strasser E (1988). Pedal evidence for the origin and diversification of cercopithecid clades. Journal of Human Evolution 17: 225–245.
21.
Youlatos D (1999). Etude fonctionnelle multivariée de l’astragale et du calcaneum de Mesopithecus pentelici, Wagner 1839 (Cercopithecoidea, Primates). Primatologie 2: 407–420.
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2012
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