CITES Appendix I This species is threatened with extinction and international trade is permitted only in exceptional circumstances. The Southern White-cheeked Gibbon (Nomascus siki) is a species of gibbon native to Vietnam and Laos.It is closely related to the Northern White-cheeked Gibbon (Nomascus leucogenys) and the Yellow-cheeked Gibbon (Nomascus gabriellae); it has previously been identified as a subspecies of each of these, and may potentially be a hybrid of the two rather than a separate species in its own right. [2], Within its original distribution, the species is still common in the remaining large forest blocks in Laos, but in Vietnam the populations are scattered due to human encroachment on their habitat for logging and farming. [2], The original distribution covered an area of central Vietnam and central Laos, ranging from the Nam Theun (Khading) and Rao Nay rivers in the north (approximately 19th parallel north) to the Banghiang and Thach Han rivers in the south (approximately 17th parallel north). As babies, northern white-cheeked gibbons are typically tan in color but gradually turn darker as they age. Since its description, it has been considered to be a subspecies of variously N. leucogenys, N. gabriellae, or N. Adult males remain black, but adult females are brown. A small population was recorded in southern China as recently as the 1980s, but more recent surveys have Their numbers have declined by 80 percent or more over the past 45 years, primarily due to habitat loss and poaching. It is found in Indonesia on the island of Sumatra, Malaysia, and southern Thailand. Have you met Robyn and Vilson, the two White Cheeked Gibbons at Wellington Zoo? Northern white-cheeked gibbons are sexually dimorphic (males and females are different). It is closely related to the northern white-cheeked gibbon (Nomascus leucogenys) and the yellow-cheeked gibbon (Nomascus gabriellae); it has previously been identified as a subspecies of each of these. 英名：Northern White-cheeked Gibbon 学名：Nomascus leucogenys 分類：テナガザル科 クロテナガザル属 生息地：中国, ラオス, ベトナム 保全状況：CR〈絶滅危惧ⅠA類〉 These long-armed apes are made for life in the trees, suspending their bodies and swinging easily from one hold to another. In Vietnam, the Northern White-Cheeked Gibbon is listed in the 2007 Vietnam Red Data Book as ‘Endangered’ and is protected by law under Decree 32/2006 ND-CP: 1B. Numbers are thought to have declined by 50% over the last 45 years, and the species is classed as endangered; it is legally protected in Vietnam, but this is not effectively enforced outside of protected areas. Although all are born a cream colour, males turn black with white cheek patches at two […] One of the most serious threats to gibbon viability is the leucogenys. [2], The taxon was first formally identified in 1951 by Jean Théodore Delacour where he described siki as a subspecies of N. concolor (a species placed in Hylobates at that time). く、古くは古代中国の王侯が飼育していた記録がある。 leucogenys. I head out to the Brookfield Zoo in Chicago. The species is found in Assam, Mizoram & Meghalaya in India, Bangladesh and in Myanmar west of the Chindwin River. [3] As with all gibbons, they are arboreal and frugivorous. The northern buffed-cheeked gibbon (Nomascus annamensis) is a newly discovered species of crested gibbon which is found in Vietnam, Cambodia, and Laos.Its habitat is in the humid subtropical and seasonal tropical forests of Although they are all are born with a cream color, males become black (except for white cheek patches) when they are two years old. Thinh, Mootnick, Thanh, Nadler and Roos (2010). Download fact sheet (212KB PDF) Share Infants are blonde so that they can first camouflage against their mother, then they darken to camouflage in the forest. The male’s body is covered with black fur, with white cheeks and a black crest on its head. The White-cheeked Gibbon inhabits the subtropical and tropical rainforests of Laos, Vietnam and Southern China. The name of the species is taken from the male's facial markings, a large patch of white fur around the edge of the mouth - this distinguishes it from a male of N. leucogenys, which has the white in a streak along the cheeks. White-cheeked gibbons are critically endangered. It was then assigned to N. leucogenys due to similarities of its song, as well as strong visual similarities between the females of the two species. concolor. [citation needed] The female will then join in and sing with the male to reinforce their bond and announce to other gibbons that they are a pair in a specific territory. Females bear young every 2-3 years and infant care is shared between the male and female of the monogamous pair. Males eventually sport completely black coats, save for two large patches of white fur … White cheeked gibbon offspring will stay with the family group until it becomes independent between 3-8 years. [4][5] A southern population formerly associated with N. siki was described as a new species, N. annamensis in 2010. There is an extinct fifth genus named Bunopithecus which is either a gibbon or gibbon-like ape. [3], The species lives in lowland broadleaf forest, with some populations living in forested mountainous areas. 類和名リスト 2018å¹´3月版, Gibbon Systematics and Species Identification, テナガザルの進化はどこまでわかっているのか, Primate Info Net ホオジロテナガザルのデータ集, https://ja.wikipedia.org/w/index.php?title=クロテナガザル属&oldid=71288454, 出典を必要とする記事/2018å¹´1月, アップロード (ウィキメディア・コモンズ), ウィキペディアに関するお問い合わせ, クリエイティブ・コモンズ 表示-継承ライセンス, ウィキメディア・コモンズには、, 最終更新 2019å¹´1月13日 (日) 11:00 （日時は. [6] However, it has been considered a separate species since 2001. [1] [3] The northern white-cheeked gibbon (Nomascus leucogenys) is a species of gibbon native to South East Asia.It is closely related to the southern white-cheeked gibbon (Nomascus siki), with which it was previously considered conspecific. The white-cheeked gibbon is in the genus Nomascus and has 52 diploid chromosomes (Rowe 1996). [4][5] Between 19 and 20 parallel there appears to be an area of overlap or intergradation between N. siki and N. The species is listed as endangered on the IUCN Red List due to habitat destruction and the pet trade. Northern white-cheeked gibbon - Wikipedia The northern white-cheeked gibbon (Nomascus leucogenys) is a species of gibbon native to South East Asia. Females have a thin edging of white around the face. [1], In the north of the range of N. siki, it overlaps or intergrades with N. leucogenys,[2] and based on mtDNA and voices, these species are closer to each other than to the remaining Nomascus; some maintain that N. siki should be regarded as a subspecies of N. The southern white-cheeked gibbon (Nomascus siki) is a species of gibbon native to Vietnam and Laos. White-cheeked gibbons are small members of the ape family, and, as such, have no tail, which is a point of difference with monkeys. The southern white-cheeked gibbon (Nomascus siki) is a species of gibbon native to Vietnam and Laos. Northern white-cheeked gibbon, Nomascus leucogenys Lar gibbon (Hylobates lar) The family is divided into four genera based on their diploid chromosome number: Hylobates (44), Hoolock (38), Nomascus (52), and Symphalangus (50). The western hoolock gibbon (Hoolock hoolock) is a primate from the gibbon family, Hylobatidae. [1] It is closely related to the Southern White-cheeked Gibbon (Nomascus siki. It is closely related to the southern white-cheeked gibbon (Nomascus siki), with which it was previously considered conspecific. The agile gibbon (Hylobates agilis), also known as the black-handed gibbon, is an Old World primate in the gibbon family. This is an easy way to tell the difference between apes and monkeys. The yellow-cheeked gibbon, like all gibbon species, has a unique song, which is usually initiated by the male. The lar gibbon (Hylobates lar), also known as the white-handed gibbon, is an endangered primate in the gibbon family, Hylobatidae. "Gibbon systematics and species identification", https://en.wikipedia.org/w/index.php?title=Southern_white-cheeked_gibbon&oldid=996270389, Creative Commons Attribution-ShareAlike License, This page was last edited on 25 December 2020, at 15:15. My intent was to photograph the 6 month old baby orangutan. White-cheeked gibbons are small apes and, like all apes, they do not have a tail. It is closely related to the northern white-cheeked gibbon (Nomascus leucogenys) and the yellow-cheeked gibbon (Nomascus gabriellae); it has previously been identified as a subspecies of each of these. White-cheeked Gibbon Colour changer! [2] The assignation of N. siki as a subspecies of N. gabriellae was due to the interpretation of a single baculum, but later research indicated that the specimen was part of a different species. White-Cheeked Gibbon Studbook Nomascus leucogenys North American Region Studbook Studbook data current as of October 25, 2011 Published 1 November, 2011 Sue Margulis, Canisius College, Studbook Keeper margulis@ White-cheeked gibbons are one of eleven species of gibbon and critically endangered. The northern white-cheeked gibbon (Nomascus leucogenys) is today found only in northwestern Vietnam and northern Laos. They are sexually dimorphic, meaning that males and females look different. Members of the species are not a uniform colour; unweaned juveniles are a light brown, turning to black after weaning. You've probably heard them - they sing a duet every single morning! Male and female White-cheeked Gibbons have different coloured fur. 目 テナガザル科に分類される属。 別名ホオジロテナガザル属 [3]。 従来はテナガザル属 Hylobates 内の1亜属で、この亜属の全ての個体が種クロテナガザル Hylobates concolor 1種に分類されていた。 All gibbon species are known to produce loud and long song bouts, lasting for 10–30 minutes. The Northern White-cheeked Gibbon (Nomascus leucogenys) is a species of gibbon native to Vietnam, Laos, and the Yunnan province of China. White-Cheeked Gibbon (genus Nomascus) Enrichment involving their feed being divided into a bucket and a hay net mixed in straw. ), with which it was previously considered conspecific. The eastern black crested gibbon (Nomascus nasutus), also known as the Cao-vit black crested gibbon or the Cao-vit crested gibbon, is a species of gibbon from southeast China and northern Vietnam. Southern white-cheeked gibbons are primarily found in southern Laos and north-central Vietnam, east of the Mekong River. The black-crested gibbon sings in the morning, sometimes in duets … It is one of the better-known gibbons and is often kept in captivity. [2] Hunting for food, traditional medicine and the pet trade is a serious threat to this species in both Laos and Vietnam. [5], CS1 maint: multiple names: authors list (.