Download all free or royalty-free photos and vectors. Individual groups do not travel far, and are believed to be territorial. [6], "Gibbon systematics and species identification", "Community of rare gibbons found in Vietnam." They are reported to have an average weight of 7.5 kg (17 lb), although this is based on only a small number of wild individuals, and those in captivity appear to be larger. [6], Today, the northern white-cheeked gibbon is found only in northern Vietnam and northern Laos. Hoolock. Males have black hair over their entire bodies, except for distinct white patches on their cheeks, as well as a prominent tuft of hair on the crown of head, and a gular sac. Female, male. They are diurnal, and spend the night sleeping in high branches, often embracing one another tightly. [14] Around one year of age, the fur in both sexes changes to a black colour, with pale cheek patches, with the sexually dimorphic adult coats only growing when they reach four or five years. However, samples of sweat taken from the axillae and chest possess lower levels of steroids in white-cheeked gibbons than in many other species of ape, suggesting that olfactory signals may be less important in these animals than in their relatives. [6], Northern white-cheeked gibbons are monogamous, with long-lasting pair bonds. [11] In captive studies, males and females that sing duets together the most frequently are the most likely to mate, indicating this may play a key role in pair-bonding. No need to register, buy now! No membership needed. The Northern White-Cheek Gibbon is one of the primate species that are monogamous The two adults live together in a small family group and they rear their 1 – 2 offspring together. The gibbon inhabits primary evergreen subtropical forest between 200 and 1,650 metres (660 and 5,410 ft) in elevation. They are generally sociable, living in groups of up to six individuals. AFP. クロテナガザル属（クロテナガザルぞく、Nomascus）は、哺乳綱 霊長目 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。 There is an hierarchy among the family. Native to Eastern Bangladesh, Northeastern India, and Southwestern China. However, up to 10% of their diet may be composed of insects and other small animals. [6] In the closely related southern species, such duets are most common at dawn, and are apparently only made on sunny days. The males can also be distinguished by the shape of the white patches on their cheeks; in the northern species, these reach the upper borders of the ears, and do not touch the corners of the mouth, whereas in the southern species, they reach only half way to the ears and entirely surround the lips. The cycle, which lasts less than 20 seconds, then repeats with increasing intensity for five to 17 minutes. The ovarian cycle has been reported to last an average of 22 days,[13] and gestation lasts 200 to 212 days. [6], At birth, both sexes are covered in yellow-buff fur, and weigh an average of 480 g (17 oz). The female is dominant followed by her female offspring, male offspring, and the adult male is … White-cheeked gibbons live in small families comprising a male adult and a female adult that mate monogamously. July 17th 2011, "Anatomical contributions to hylobatid taxonomy and adaptation", "Gibbon hand preference studies at the Endangered Primate Rescue Center, Vietnam", "The northern white-cheeked gibbon (Nomascus leucogenys) is on the edge of extinction in China", "Survey for southern white-cheeked gibbons (, https://en.wikipedia.org/w/index.php?title=Northern_white-cheeked_gibbon&oldid=985183759, IUCN Red List critically endangered species, Creative Commons Attribution-ShareAlike License, This page was last edited on 24 October 2020, at 13:34. They are diurnal, and spend the night sleeping in high branches, often embracing one another tightly.

Food To Live Canada, Dark Chocolate Kit Kat Mini Nutrition, How To Save Saudi Number For Whatsapp, Dhoom 1 Full Movie Online, Microbiology Multiple Choice Questions, Makita Finishing Sander Bo4552 Manual, Tony Moly Vital Vita 12 B5, How Much Fluoride Is Too Much For Babies, Swift Vs Julia, Writing Haiku Poems, Descartes First Principle,