Gray arm macaque
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Gray-arm macaque ( Macaca ochreata ) |
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| Macaca ochreata | ||||||||||||
| ( Ogilby , 1841) |
The gray-arm macaque ( Macaca ochreata ) is a species of primate from the genus of macaques within the family of vervet monkeys (Cercopithecidae). It is endemic to the Indonesian island of Sulawesi (Celebes) and lives there on the southeastern peninsula ( Sulawesi Tenggara province ), the nominate form on the mainland and the subspecies Macaca ochreata brunnescens on the islands of Buton and Muna . The two were only separated from each other about 10,000 years ago by the rise in sea levels at the end of the last Ice Age .
features
Gray-arm macaques reach a body length of 48 to 59 (males) or 40 to 46 (females) centimeters, plus a 4 to 6 (males) or 3 to 5 (females) long tails. The weight of male monkeys is 6 to 9 kg, females weigh 3 to 5 kg. Gray-arm macaques owe their name to the ocher-gray colored arms. The lower legs are also colored gray, which is why in English Booted Macaque ( "Puss in macaque") are called. The rest of the fur is dark gray or black, as is the hairless face. The subspecies M. o. Brunnescens is lighter in color than the nominate form and has a shorter face.
Habitat and way of life
These primates inhabit the southeast of Sulawesi, their habitat are tropical rainforests , tree-rich savannas and mangroves . Little is known about their way of life. Like most species of macaques, they live together in mixed groups made up of several males, females, and juveniles. They are diurnal and mainly live in the trees, but sometimes also stay on the ground. The food of the gray-arm macaque consists of fruits, bamboo shoots, leaves and, to a lesser extent, insects or other invertebrates. Sometimes they invade plantations and consume crops such as sweet potatoes , cocoa , bananas or corn. Among the wild fruits that are consumed are those of the kapok tree and fig.
Danger
The IUCN estimates the existence of the species as endangered (Vulnerable). Like many other animals in Sulawesi, it is affected by deforestation. About 70,000 specimens of the nominate form are said to exist, while the population of the subspecies Macaca ochreata brunnescens is estimated at 40,000 individuals. The latter may have become extinct on Muna since the island has been completely deforested. Both subspecies occur in various protected areas, the nominate form in the Rawa Aopa Watumohai National Park, among others .
literature
- Thomas Geissmann : Comparative Primatology. Springer-Verlag, Berlin et al. 2003, ISBN 3-540-43645-6 .
Individual evidence
- ↑ a b c Elizabeth L. Gadsby, Colin P. Groves, Aoife Healy, K. Praveen Karanth, Sanjay Molur, Tilo Nadler, Matthew C. Richardson, Erin P. Riley, Anthony B. Rylands, Lori K. Sheeran, Nelson Ting , Janette Wallis, Siân S. Waters & Danielle J. Whittaker: Family Cercopithecidae (Old World Monkeys). Page 634 in Russell A. Mittermeier , Anthony B. Rylands & Don E. Wilson : Handbook of the Mammals of the World: - Volume 3. Primates. Lynx Editions, 2013 ISBN 978-8496553897
- ↑ Macaca ochreata in the endangered Red List species the IUCN 2006. Posted by: A. Eudey & Members of the Primate Specialist Group, 2000. Retrieved on 9 May, 2006.
