Sabah langur
| Sabah langur | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sabah langur ( Presbytis sabana ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Presbytis sabana | ||||||||||||
| ( Thomas , 1934) |
The Sabah langur ( Presbytis sabana , Syn . : P. hosei sabana , Semnopithecus sabana ) is a primate species from the group of the slender monkeys (Presbytini), which occurs in the north of the island of Borneo . Its distribution area coincides roughly with the territory of the Malay state of Sabah . It is not yet known whether it also extends to adjacent areas of the Indonesian part of Borneo.
features
The Sabah langur reaches a head-trunk length of about 48 to 56 cm, a tail length of 65 to 84 cm, and a weight of 5.5 to 6 kg (females) and 6 to 7 kg (males). The fur on the back is gray, the belly and the insides of the limbs are whitish. Hands and feet are black. The skin of the face is reddish, the lips bluish. Typical of the species is a noticeable black spot on either side of the nose. Hatchlings are white with a cross-shaped pattern on the shoulder and back.
Way of life
The Sabah langur inhabits the evergreen tropical rainforest . It feeds mainly on young and just sprouting leaves (42 to 45%), unripe fruits (3 to 25%), seeds (17 to 21%) and flowers (3% or less). Beetles, other insects, bark, bird eggs and nestlings are also eaten. The monkeys live in groups of a maximum of 14 individuals. They consist of one male, two to six females and their young. They sometimes form mixed groups with the chestnut langur ( Presbytis rubicunda ). As a rule, however, one species is rare or absent in areas where the other occurs. The Sabah langur usually stays in the middle and upper areas of the trees (10 to 30 m). Sabah langurs spend around 14 to 17% of the day eating, 45 to 49% resting (necessary to digest the leaf food), 30 to 32% of the time are used to move and 4 to 6% are spent on social activities. The females have their first young when they are three years old, usually from July to October. The pups are weaned at around 300 days of age.
Danger
The Sabah langur is listed as endangered by the International Union for Conservation of Nature and Natural Resources ( IUCN ). The population of the species has decreased continuously in recent years. The main reason is human hunting. The Sabah langurs seem to survive selective logging in which their sleeping trees in particular remain standing. They occur in the following nature reserves: Danum Valley Conservation Area , Tabin Game Reserve , Sepilok Orangutan Rehabilitation Santuary , Sanctuary Hidupan Liar di Hilir Kinabatangan , Maliau Basin Conservation Area and possibly in the Crocker Range Park.
literature
- D. Zinner, GH Fickenscher & C. Roos: Family Cercopithecidae (Old World monkeys). Pages 717 and 718 in Russell A. Mittermeier , Anthony B. Rylands & Don E. Wilson : Handbook of the Mammals of the World: Primates: 3rd ISBN 978-8496553897
Web links
- Presbytis hosei ssp. sabana in the endangered Red List species the IUCN 2008. Posted by: Nijman, V., Meijaard, E. & Hon, J., 2008. Accessed March 18, 2015.