Learn more about the Agile gibbon – with amazing Agile gibbon photos and facts on Arkive. Species: Hylobates agilis; Common name: Agile gibbon; Synonyms: Hylobates rafflei, Hylobates unko, Hylobates albo nigrescens, Hylobates albo griseus. Demographic processes and the structure of a population of agile gibbons ( Hylobates agilis) were investigated over 6 years in the Gunung Palung Reserve, .
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Gibbons are found throughout the tropical rainforests of South and Southeast Asia. Agile gibbons, Hylobates agilisare found in Thailand, Indonesia, and Malaysia. Hylobates agilis is found in the tropical rainforests of Thailand, Malaysia, and Indonesia. They live in the upper canopy of the forest, feeding on fruits, leaves, and insects. Members of Hylobates spend most of their lives in the trees, and rarely descend to the ground. Lesser apes in the family Hylobatidae are generally small. The average weight of H.
Agile gibbons come in a variety of different colors, including black, brown, light tan and reddish-brown. Both sexes have white eyebrows. Males and females can be easily distinguished by the white eyebrows and cheeks possessed by the males. Hylobates agilislike other gibbons, has extremely long arms and fingers. This adaptation aides in brachiation, the prnciple mean of locomotion for these animals. Brachiation consists of hanging from branches and swinging from tree to tree.
Hylobates agilis forms monogamous bonds. Mated pairs stay together until one of them dies. Hylobates agilis becomes sexually mature around the age of 8 years. The gestation period is about seven months. These animals give birth to a single offspring per pregnancy, and a mated pair can produce five to six offspring during their reproductive lifetime.
The interbirth interval for H. Most female gibbons nurse and care for their offspring until the offspring are about two years old. Offspring remain with their parents until they reach sexual maturity, around eight years, they then disperse from their natal group. Males also particpate in parental care in this monogamous species.
Males groom offspring, and help to defend them. The reported lifespan in captivity for these lesser apes is 44 years.
Wild animals probably do not live as long.
The average group size for H. The group usually consists of the male and female mated pair, an infant, and a juvenile.
Gibbons exhibit two unique forms of behavior: When an individual H. These monogamous bonds are important agiliss raising young and for defending the pair’s territory.
Hylobates agilis defend a territory hylobatds “singing”. In the early morning, great calls can be heard throughout the upper canopy. These singing bouts are often duets and are a way of claiming home territory. When singing is hylonates enough to keep intruders away, both male and female gibbons will chase the intruder away. As in all primates, communication in this species is complex and involved several different modalities. As hhlobates in the “Behavior” section, above, these animals agllis highly vocal, and use great call vocalizations to defend their territories from other mated pairs.
Tactile communication is also important, between mates, and between parents and their offspring. Tactile communication involves grooming, mating, play and sometimes aggression. In addition to vocal and tactile forms of communication, these animals use facial expressions, gestures, and body postures to communicate with conspecifics.
Hylobates agilis consumes large amounts of fruits. Like other gibbons, these animals are primarily frugivorous. Agile gibbons have also been observed eating a variety of other foods, including leaves, flowers, and insects. Due to their active lifestyle, it is necessary for them to eat food rich in calories. Fruits have a high caloric content. Details on predation in this species are not available. However, snakes and raptors are probably the greatest threats to these animals. Because of their highly arboreal lifestyle, many potential predators are not likely to have access to these animals.
As these animals are not likely to be an important source of food for other animals, their greatest role in the ecosystem is probably seed dispersal for the fruits they eat. Hylobates agilis is not an important economic resource for humans.
These animals are sometimes hunted for food, and they agilid illegally captured for the pet trade. Poaching is a threat to H.
IUCN Red List of Threatened Species
Illegal poaching for meat and the pet trade are contributing factors in the declining numbers of H. There is no known negative economic effect of this species on humans. Hylobates agilis is listed by IUCN as an endangered species. Due to massive deforestation, their habitat is rapidly decreasing.
This loss of habitat due to logging and agricultural demands is the main threat to gibbon species. Conservation measures have been taken, such as reserve game parks and breeding programs in zoos.
Unfortunately, these measures are not enough, and more intense conservation efforts must be initiated in hylobatez to ensure the survival of these species.
In birds, naked and helpless after hatching. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a now extinct synapsid ancestor; the fossil record does not distinguish these possibilities. Iteroparous animals must, by definition, survive over multiple seasons or periodic condition changes.
Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal. Accessed November 10, at http: University of Chicago Press.
Walker’s Mammals of the World, Sixth Edition. The Johns Hopkins University Press. Apes of the World. Help us improve the site by taking our survey. To cite this page: Accessed December 31, at https: The Animal Diversity Web is an educational resource written largely by and for college students.
ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we hlobates our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide avilis to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. Hylobates agilis agile gibbon Facebook. Biogeographic Regions oriental native Habitat Hylobates agilis is found in the tropical rainforests agiilis Thailand, Malaysia, and Indonesia.
Habitat Regions tropical terrestrial Terrestrial Biomes rainforest Physical Description Lesser apes in the family Hylobatidae are generally small. Other Physical Features endothermic homoiothermic bilateral symmetry Sexual Dimorphism male larger Range mass 4 to 6 kg 8. Mating System monogamous Hylobates agilis becomes sexually mature around the age of 8 years. Breeding season These animals do not have a strict breeding season.
Average number of offspring 1 Average number of offspring 1 AnAge Average gestation period 7 months Average age at sexual or reproductive maturity female 8 years Average age at sexual or reproductive maturity male 8 years Most female gibbons nurse and care for their offspring until the offspring are about two years old.
Key Behaviors arboreal diurnal motile sedentary territorial social Communication and Perception As in all primates, communication in this species is complex and involved several different modalities. Communication Channels visual tactile acoustic Other Communication Modes duets Perception Channels visual tactile acoustic chemical Hylobtes Habits Hylobates agilis consumes large amounts of fruits.
Primary Diet herbivore frugivore Animal Foods insects Plant Foods leaves fruit flowers Predation Details on predation in this species are not available. Ecosystem Roles As these animals are not likely to be an important hyylobates of food for other animals, their greatest role in the ecosystem is probably seed dispersal for the fruits they eat. Ecosystem Impact disperses seeds Economic Importance for Humans: Positive Hylobates agilis is not an important economic resource for humans.
Positive Impacts pet trade hylogates Economic Importance for Humans: Negative There is no known negative economic effect of this species on humans.
Glossary acoustic uses sound to communicate. In other words, India and southeast Asia. Connect with us Help us improve the site by taking our survey.
Classification Kingdom Animalia animals Animalia: The ADW Team gratefully acknowledges their support.