4272 x 2848 px | 36,2 x 24,1 cm | 14,2 x 9,5 inches | 300dpi
Data acquisizione:
27 giugno 2008
Ubicazione:
Japan
Altre informazioni:
The Japanese Macaque (Macaca fuscata), also known as the Snow Monkey, is a terrestrial Old World monkey species native to Japan, although an introduced free-ranging population has been living near Laredo, Texas since 1972. It is the most northern-living as well as the most polar-living non-human primate. In Japan, they were historically known as saru ("monkey"). Nihonzaru (Nihon "Japan" + saru) is used in modern times to distinguish from other primates. Individuals have brown-gray fur, a red face, and a short tail. There are two subspecies of this macaque. The Japanese Macaque lives in troops of 20-100 individuals in size usually subdivided into matrilineal groups consisting of many females and several males. On average, females outnumber males by 3 to 1. The females have a rigid hierarchy with infants inheriting their mother's rank. The males tend to be transient within the troop but in Jigokudani park a line of alpha males, "chiefs", has been documented. Females will copulate with an average of ten males during the mating season, though only about one third of the mountings will lead to ejaculation. Though pregnancies only occur during the mating season, heterosexual and homosexual relations go on year-round. After a gestation period of 173 days, females bear only one baby, which weighs about 500 g at birth. This macaque has an average lifespan of 30 years.
