Snub-nosed monkeys | |
---|---|
Golden snub-nosed monkey (Rhinopithecus roxellana) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Primates |
Suborder: | Haplorhini |
Infraorder: | Simiiformes |
Family: | Cercopithecidae |
Tribe: | Presbytini |
Genus: | Rhinopithecus A. Milne-Edwards, 1872 |
Type species | |
Semnopithecus roxellana A. Milne-Edwards, 1872 | |
Species | |
See text |
Snub-nosed monkeys are a group of Old World monkeys and make up the entirety of the genus Rhinopithecus. The genus is rare and not fully researched. Some taxonomists group snub-nosed monkeys together with the genus Pygathrix .
Snub-nosed monkeys live in Asia, with a range covering southern China (especially Tibet, Sichuan, Yunnan, and Guizhou) extending into the northern parts of Myanmar and Vietnam. Snub-nosed monkeys inhabit mountain forests up to elevations of more than 4,000 m (13,000 ft). In the winter, they move into the deeply secluded regions. Higher elevation areas are more remote and difficult for humans to access and utilize and other studies have found less deforestation, more reforestation and afforestation, less range contraction, and less extinction in topographically steep areas. All Rhinopithecus species inhabit primary forest and grid cells with tree cover ≥ 75% might constitute important potential habitat. [1]
These monkeys are named for the short stump of a nose on their round faces, with nostrils arranged forward. They have relatively multicolored and long fur, particularly at the shoulders and backs. They grow to a length of 51–83 cm (20–33 in) with a tail of 55–97 cm (22–38 in).
Snub-nosed monkeys spend the majority of their life in the trees. They live together in very large groups of up to 600 members, splitting up into smaller groups in times of food-scarcity, such as in the winter. Groups consist of many more males than females. They have territorial instincts, defending their territory mostly with shouts. They have a large vocal repertoire, calling sometimes solo while at other times together in choir-like fashion.
The diet of these animals consists mainly of tree needles, bamboo buds, fruits and leaves. A multi-chambered stomach helps them with digesting their food.
The impulse for mating starts with the female. She takes up eye contact with the male and runs away a short bit, then flashes her genitals. If the male shows interest (which does not always occur), he joins the female and they mate. The 200-day gestation period ends with a single birth in late spring or early summer. Young animals become fully mature in about six to seven years. Zoologists know little about their lifespan.
The golden [2] and black-and-white snub-nosed monkeys [3] are both endangered species, while the other three species are critically endangered. [4] [5] [6]
Golden snub-nosed monkey communities with large populations have high genetic diversity, but also show higher levels of recent inbreeding than other snub-nosed monkeys. [7]
Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
---|---|---|---|---|
Black-and-white snub-nosed monkey | R. bieti A. Milne-Edwards, 1897 | Southern China | Size: 74–83 cm (29–33 in) long, plus 51–72 cm (20–28 in) tail [8] Habitat: Forest [3] Diet: Leaves, fruit, and lichen [8] | EN
|
Golden snub-nosed monkey | R. roxellana (A. Milne-Edwards, 1870) Three subspecies
| Central China | Size: 57–76 cm (22–30 in) long, plus 51–72 cm (20–28 in) tail [9] Habitat: Forest [2] Diet: Leaves, bark, and lichen, as well as buds and fruit seeds [9] | EN
|
Gray snub-nosed monkey | R. brelichi Thomas, 1903 | Central China | Size: About 64–73 cm (25–29 in) long, plus 70–97 cm (28–38 in) tail [10] Habitat: Forest [4] Diet: Leaves, buds, fruit, seeds and bark, as well as insect larvae [10] | CR
|
Myanmar snub-nosed monkey | R. strykeri Geissmann et al., 2010 | Northern Myanmar | Size: About 56 cm (22 in) long, plus 78 cm (31 in) tail [11] Habitat: Forest [6] Diet: Leaves, fruit, seeds, buds, flowers, twigs, and bark [12] | CR
|
Tonkin snub-nosed monkey | R. avunculus Dollman, 1912 | Northern Vietnam | Size: 51–65 cm (20–26 in) long, plus 66–92 cm (26–36 in) tail [13] Habitat: Forest [5] Diet: Leaves, fruit, flowers, and seeds [13] | CR
|
The macaques constitute a genus (Macaca) of gregarious Old World monkeys of the subfamily Cercopithecinae. The 23 species of macaques inhabit ranges throughout Asia, North Africa, and Europe. Macaques are principally frugivorous, although their diet also includes seeds, leaves, flowers, and tree bark. Some species such as the long-tailed macaque will supplement their diets with small amounts of meat from shellfish, insects, and small mammals. On average, a southern pig-tailed macaque in Malaysia eats about 70 large rats each year. All macaque social groups are arranged around dominant matriarchs.
The guenons are Old World monkeys of the genus Cercopithecus. Not all members of this genus have the word "guenon" in their common names; also, because of changes in scientific classification, some monkeys in other genera may have common names that include the word "guenon". Nonetheless, the use of the term guenon for monkeys of this genus is widely accepted.
The doucs or douc langurs make up the genus Pygathrix. They are colobine Old World monkeys, native to Southeast Asia, which consists of these 3 species: red-shanked douc, black-shanked douc, and gray-shanked douc.
Trachypithecus is a genus of Old World monkeys containing species known as lutungs, langurs, or leaf monkeys. Their range is much of Southeast Asia.
Red colobuses are Old World monkeys of the genus Piliocolobus. It was formerly considered a subgenus within the genus Procolobus, which is now restricted to the olive colobus. They are closely related to the black-and-white colobus monkeys, and some species are often found in groups with the blue monkey. The western red colobus is frequently hunted by the common chimpanzee.
Nujiang Lisu Autonomous Prefecture is an autonomous prefecture in northwestern Yunnan, China. The titular ethnic group is the Lisu people, who make up nearly half of the prefecture's population.
The black-and-white snub-nosed monkey, also known as the Yunnan snub-nosed monkey, is a large black and white primate that lives only in the southern Chinese province of Yunnan, where it is known to the locals as the Yunnan golden hair monkey and the black-and-white snub-nosed monkey (黑白仰鼻猴). The common name, black snub-nosed monkey, is issued to Rhinopithecus strykeri, inhabiting the Northern Sino-Myanmar border. Coniferous and deciduous forests in the mountainous regions of Yunnan are the ideal terrain for these primates. It is threatened by habitat loss, and is considered an endangered species. With their unique adaptations to their environment, these monkeys thrive at extreme altitudes despite the below freezing temperatures and thin air. This primate's diet is mainly made up of the large amounts of lichens available in their region.
The gray snub-nosed monkey, also known as Brelich's snub-nosed monkey, Guizhou snub-nosed monkey, and Guizhou golden monkey, is a species of primate in the family Cercopithecidae. It is endemic to China, where it is known as the Guizhou golden hair monkey (黔金丝猴) or gray golden hair monkey (灰金丝猴). It is threatened by habitat loss. Of the three species of snub-nosed monkeys in China, the gray snub-nosed monkey is the most threatened, with a total population thought to number fewer than 400 individuals.
The golden snub-nosed monkey is an Old World monkey in the subfamily Colobinae. It is endemic to a small area in temperate, mountainous forests of central and Southwest China. They inhabit these mountainous forests of Southwestern China at elevations of 1,500–3,400 m (4,900–11,200 ft) above sea level. The Chinese name is Sichuan golden hair monkey (四川金丝猴). It is also widely referred to as the Sichuan snub-nosed monkey. Of the three species of snub-nosed monkeys in China, the golden snub-nosed monkey is the most widely distributed throughout China.
The Tonkin snub-nosed monkey or Dollman's snub-nosed monkey is a slender-bodied arboreal Old World monkey endemic to northern Vietnam. It has black and white fur, a pink nose and lips, and blue patches around the eyes. It is found at elevations from 200 to 1,200 m on fragmentary patches of forest on craggy limestone areas. First described in 1912, the monkey was rediscovered in 1989 but is exceedingly rare. Out of the five snub-nosed monkey species in the world, the Tonkin snub-nosed monkey is the rarest. In 2008, fewer than 250 individuals were thought to exist, and the species was the subject of intense conservation effort. The main threats faced by these monkeys are habitat loss and hunting, and the International Union for Conservation of Nature has rated the species as "critically endangered".
One-male groups are a type of social organization where one male interacts with a group of females and their immature offspring. Offspring of both sexes are evicted from the group upon reaching puberty. It can be seen in many species of primates, including the gelada baboon, the patas monkey, savanna baboon, sun-tailed monkey, golden snub-nosed monkey, and the hamadryas baboon. There are costs and benefits for individuals living in one-male groups. As well, individuals within one-male groups can interact with each other just like individuals can interact with those from different one-male groups.
The World's 25 Most Endangered Primates is a list of highly endangered primate species selected and published by the International Union for Conservation of Nature (IUCN) Species Survival Commission (SSC) Primate Specialist Group (PSG), the International Primatological Society (IPS), Global Wildlife Conservation (GWC), and Bristol Zoological Society (BZS). The IUCN/SSC PSG worked with Conservation International (CI) to start the list in 2000, but in 2002, during the 19th Congress of the International Primatological Society, primatologists reviewed and debated the list, resulting in the 2002–2004 revision and the endorsement of the IPS. The publication was a joint project between the three conservation organizations until the 2012–2014 list when BZS was added as a publisher. The 2018–2020 list was the first time Conservation International was not among the publishers, replaced instead by GWC. The list has been revised every two years following the biannual Congress of the IPS. Starting with the 2004–2006 report, the title changed to "Primates in Peril: The World's 25 Most Endangered Primates". That same year, the list began to provide information about each species, including their conservation status and the threats they face in the wild. The species text is written in collaboration with experts from the field, with 60 people contributing to the 2006–2008 report and 85 people contributing to the 2008–2010 report. The 2004–2006 and 2006–2008 reports were published in the IUCN/SSC PSG journal Primate Conservation,, since then they have been published as independent publications.
The Myanmar snub-nosed monkey or Burmese snub-nosed monkey or black snub-nosed monkey is a critically endangered species of colobine monkey discovered in 2010 in northern Burma (Myanmar). It was formally described as a novel species of primate in 2011 based on its fur, beard and tail. Two groups of the species were discovered in China in 2011 and 2015, respectively.
People Resources and Conservation Foundation (PRCF) is an international non-governmental organization that helps local people in developing countries protect their natural environment. Its headquarters are in the United States but its conservation fieldwork is carried out in a number of Southeast Asian countries. PRCF has joined collaborative research projects on new animal species in Southeast Asia, such as the Myanmar/Burmese snub-nosed monkey. The organization also sets up programs to help native cultures retain their cultural identity through projects such as basket and fabric weaving.
Biodiversity and Nature Conservation Association (BANCA) is a Burmese non-governmental organisation established in the capital city Yangon. The society aims to conserve natural diversity and promote awareness. It remains the leading force in Burma for biodiversity conservation and sustainable development.
The Gaoligongshan National Nature Reserve (GNNR) is a protected area comprising the Gaoligong Mountains and the nearby Nu Jiang Reserve in the western Yunnan Province of China, near the international border with Burma. It covers a vast stretch of the junction of Baoshan City, Tengchong, and Lushui County, towards the west side of Nu (Salween) River.