Tonkin snub-nosed monkey
The Tonkin snub-nosed ( Rhinopithecus avunculus ), also Tonkin Goldaffe is a primate of the group of monkeys Slim ( Presbytini ). Of this kind only live less than 200 animals in northern Vietnam, so it is one of the most endangered primate species in the world.
Features
The fur of Tonkin stump nose is at the top in black and gray on the belly, whitish on the underside of the tail and on the inside of the limbs. The head is rounded, the face is also white. Like all stump noses is this monkey characterized by a short upturned nose, the openings of which are directed forward. Around the eyes and the nose, the skin is hairless and light blue colored, round the mouth Black Blue. There is an orange patch on the throat. Males reach an average body length of 65 centimeters, the tail is 83 centimeters longer. Females are 54 inches long and have a 68 cm long tail. With around 14 kg males are significantly heavier than females, bring about 8.5 kilograms.
Distribution and habitat
As the only representative of the stump noses in addition to the Burmese snub-nosed monkey, the Tonkin snub-nose does not live in China, but in northern Vietnam, the eponymous Tonkin. Their former habitat has been severely limited, today they live only in a 100 km2 area in the provinces of Tuyen Quang and Bac Can. Their habitat are monsoon forests.
Way of life
Tonkin stump noses are tree dwellers and, like all Old World monkeys diurnal. They live in harem groups, ie, one male, several females and the corresponding offspring. The average group size is 15 animals. The remaining males often form so-called bachelor groups. Individual groups join together more often to larger organizations.
The diet of these apes consists of leaves, fruits and seeds, the composition of the diet varies but seasonal reasons. So probably leaves in spring and fruit form the major part of the diet in autumn.
Little is known about reproduction. After a 200 - day gestation, the female gives birth to a single young is born.
Threat
Tonkin stump noses are among the most endangered primate species. Main causes are the continuing destruction of their habitat, associated with the hunting. Even military conflicts in the range of the species may have contributed to their decline. The IUCN estimates that the total population to less than 200 animals and lists the species as " threatened with extinction " ( critically endangered ).