Stump Tailed Macaque Species Profile and Conservation Status

The Stump Tailed Macaque is a fascinating species that can be found in the tropical forests of Indonesia. They are also known as the Southern Pig-Tailed Macaque.

They have a distinctive stump-shaped tail, which is much shorter than their arms. This unique feature is a result of their adaptation to their environment.

Stump Tailed Macaques are highly social animals that live in large groups, typically consisting of 10-30 individuals. They are known to be quite aggressive towards each other, especially during mating season.

Their diet consists mainly of fruits, leaves, and seeds, which they forage from the forest floor.

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The stump-tailed macaque has long, thick, dark brown fur covering its body. This fur is quite thick, but its face and short tail are hairless.

Infants are born white and darken as they mature. As they age, their bright pink or red faces darken to brown or nearly black and lose most of their hair.

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Males are larger than females, measuring 51.7-65 cm long and weighing 9.7-10.2 kg. Females, on the other hand, measure 48.5-58.5 cm long and weigh 7.5-9.1 kg.

Males' canine teeth are more elongated than those of females, which are important for establishing dominance within social groups. This is a key characteristic that sets males apart from females.

Stump-tailed macaques have cheek pouches to store food for short periods of time. This is a unique feature that helps them forage and store food efficiently.

The stump-tailed macaque's tail is quite short, measuring between 32 and 69 mm. This is shorter than other macaque species.

Here's a comparison of the physical characteristics of males and females:

The stump-tailed macaque is found in multiple countries in South and Southeast Asia, including Cambodia, southern China, northeastern India, Laos, Peninsular Malaysia, Myanmar, Thailand, and Vietnam.

They inhabit a variety of habitats, ranging from tropical semi-evergreen forests to tropical wet evergreen forests, and tropical moist deciduous forests.

In particular, they prefer dense tropical semi-evergreen forests but can also live in disturbed secondary forests and those adjoining human-modified habitats.

They have been introduced to an uninhabited island in Lake Catemaco, Veracruz, Mexico, where they range in semi-natural conditions.

Stump-tailed macaques can live at elevations ranging between 0.03-1.74 miles high (50-2,800 m).

Here's a breakdown of their habitat regions:

Their terrestrial biomes include:

They are found in subtropical evergreen forests below 1500 m and tropical evergreen rainforests between 1800 and 2500 m.

Stump-tailed macaques are remarkably peaceful creatures, with a unique social structure that sets them apart from other macaque species. They live in groups of up to 60 individuals, consisting of adult males, females, and young.

Females are philopatric, meaning they stay in their birth group, while males leave after reaching sexual maturity. This hierarchical structure is reinforced through physical contact, such as biting and slapping, but is surprisingly egalitarian compared to other macaques.

Stump-tailed macaques are also surprisingly unfussy in their eating habits, with fruit being a staple part of their diet. However, their large, bulky build and thick limbs make them more suited to life on land than in trees.

Here are some key behaviors exhibited by stump-tailed macaques:

Their unique physique may be responsible for their tendency to consume larger quantities of meat than other macaque species.

Stump-tailed macaques live in groups of up to 60 individuals, with adult males, females, and young all part of the same social unit. Females are philopatric, meaning they stay in their natal group, while males leave after reaching sexual maturity.

These macaques are hierarchical, with rank reinforced through physical contact like biting and slapping. However, they're relatively peaceful and egalitarian compared to other macaque species.

Young males will often fight to establish rank in the hierarchy when they move into a new group. After a disagreement or fight, they'll engage in a specific ritual of reconciliation, where the subordinate will present their rump to the dominant male, who will then kiss or embrace the subordinate.

The subordinate will respond with "lip smacking" or "teeth chattering". This unique behavior is a key aspect of stump-tailed macaque social dynamics.

Stump-tailed macaques are surprisingly unfussy in their eating habits, with fruit being a staple part of their diet. However, they're also known to consume large quantities of insects, small animals, and eggs.

Their diet is likely influenced by their unique physique, which makes them well-suited for mobile life on land but less agile in trees.

Here's a breakdown of some key behaviors exhibited by stump-tailed macaques:

These behaviors are shaped by their social structure and environment, and are a key part of what makes stump-tailed macaques such fascinating creatures.

Stump-tailed macaques play a vital role in native ecosystems as seed dispersers. They help spread seeds, contributing to the diversity and health of their environments.

In fact, studies have shown that these macaques are effective seed dispersers. They pick up seeds from the fruit they eat and deposit them in new locations, often with a pile of fertilizer.

One notable example of this is the work by Choudhury (2002) and Fooden (1990). They found that stump-tailed macaques are indeed seed dispersers.

Here's a breakdown of their ecosystem impact:

The stump-tailed macaque is a vulnerable species, listed as vulnerable on the IUCN Red List. They are at risk for extinction in the near future due to habitat and hunting.

Human-induced habitat change is the primary cause of population decline, with urban and agricultural expansion threatening native habitats. Conservation efforts are underway in India, where these macaques are legally protected, with set aside areas of land for conservation and protection being enforced.

The IUCN Red List classification of the stump-tailed macaque is as follows:

The conservation status of the stump-tailed macaque is a pressing concern. They are listed as vulnerable on the IUCN Red List.

Habitat loss and hunting are the primary causes of their population decline. Human-induced habitat change, such as urban and agricultural expansion, threatens their native habitats. This has led to a 20% decrease in their population over the last 10 years.

In some areas, like India, the government has taken steps to protect the stump-tailed macaque. They have set aside areas of land for conservation and are enforcing protection laws.

Here are some key conservation listings for the stump-tailed macaque:

Classification is a crucial step in understanding the biology of a species.

The stump-tailed macaque, Macaca arctoides, belongs to the kingdom Animalia.

This kingdom is home to a vast array of animals, with 22861 pictures and 7109 specimens available for reference.

Moving down the classification tree, we find that the stump-tailed macaque is a chordate, a group that also includes humans.

Chordates are characterized by their vertebral column, which is made up of 709 sounds and 6829 specimens.

Further classification reveals that the stump-tailed macaque is a mammal, a class that includes only warm-blooded animals.

Mammals are known for their hair and ability to produce milk for their young, with 4389 pictures and 6622 specimens available for study.

The stump-tailed macaque is specifically a primate, a group that includes lemurs, lorises, and apes.

Primates are characterized by their advanced brain development and ability to use tools, with 454 pictures and 622 specimens available for reference.

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The stump-tailed macaque belongs to the family Cercopithecidae, which includes Old World monkeys.

Old World monkeys are characterized by their broad faces and tails, with 157 pictures and 179 specimens available for study.

Finally, the stump-tailed macaque is classified as Macaca arctoides, a species within the genus Macaca.

Here's a breakdown of the classification hierarchy:

In captivity, stump-tailed macaques can live up to 30 years. This is a remarkable lifespan for a primate of their size.

They have a varied diet that includes a wide range of food sources. They are omnivorous, eating mostly fruit, as well as seeds, flowers, roots, leaves, and animals.

Here's a breakdown of their foraging behavior:

They can live up to 30 years in captivity. However, they tend to have shorter lifespans in the wild.

In captivity, their average lifespan is 30 years.

This is a significant difference from their wild counterparts, where their lifespan is significantly shorter.

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Stump-tailed macaques have cheek pouches that can hold a volume equal to that of their stomach.

They forage for food starting in the morning through midday, which is likely a time when food is most abundant and accessible.

Their diet is omnivorous, but they eat mostly fruit. They also eat seeds, flowers, roots, leaves, and animals such as frogs, freshwater crabs, birds, and bird eggs.

Interestingly, they have been known to raid corn crops and cultivated fruits, which suggests they're not picky about their food sources.

Here's a breakdown of their foraging behavior:

Stump-tailed macaques are native to southeast Asia, with a distribution that includes China, India, Burma, West Malaysia, Thailand, Vietnam, eastern Bangladesh, and the Malay Peninsula. They can be found in these countries, but their presence in Bangladesh is possibly extinct.

Their range extends from tropical semi-evergreen forests to tropical wet evergreen forests, and tropical moist deciduous forests. Deciduous forests lose their leaves during autumn and winter, while evergreen trees keep them year-round.

Stump-tailed macaques prefer dense tropical semi-evergreen forests but can live in disturbed secondary forests and those adjoining human-modified habitats. Secondary forests have grown back after a period of human-caused disturbance.

They live at elevations ranging between 0.03-1.74 miles high (50-2,800 m), which is quite a range.

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Macaques are a type of primate that belongs to the macaque genus.

The Stump-tailed Macaque is one of the species within this genus.

Stump-tailed Macaques are known to inhabit Southeast Asia, specifically in countries such as China, India, and Indonesia.

They are found in a variety of habitats, including tropical rainforests and mountainous regions.

One notable characteristic of Stump-tailed Macaques is their stump-like tail, which is actually a short, stumpy tail.

This unique feature distinguishes them from other macaque species.

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