Moor Macaque
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The Moor macaque (''Macaca maura'') is a
macaque 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 (in Gibraltar). Macaques are principally f ...
monkey with brown/black body fur with a pale rump patch and pink bare skin on the rump. It has ischial callosities, which are oval-shaped. It is about 50–58.5 cm long, and eats figs,
bamboo Bamboos are a diverse group of mostly evergreen perennial plant, perennial flowering plants making up the subfamily (biology), subfamily Bambusoideae of the grass family Poaceae. Giant bamboos are the largest members of the grass family, in th ...
seeds, buds, sprouts,
invertebrate Invertebrates are animals that neither develop nor retain a vertebral column (commonly known as a ''spine'' or ''backbone''), which evolved from the notochord. It is a paraphyletic grouping including all animals excluding the chordata, chordate s ...
s and
cereal A cereal is a grass cultivated for its edible grain. Cereals are the world's largest crops, and are therefore staple foods. They include rice, wheat, rye, oats, barley, millet, and maize ( Corn). Edible grains from other plant families, ...
s in tropical
rainforest Rainforests are forests characterized by a closed and continuous tree Canopy (biology), canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforests can be generally classified as tropi ...
s. It is sometimes called "dog-ape" because of its
dog The dog (''Canis familiaris'' or ''Canis lupus familiaris'') is a domesticated descendant of the gray wolf. Also called the domestic dog, it was selectively bred from a population of wolves during the Late Pleistocene by hunter-gatherers. ...
-like muzzle, although it is no more closely related to
ape Apes (collectively Hominoidea ) are a superfamily of Old World simians native to sub-Saharan Africa and Southeast Asia (though they were more widespread in Africa, most of Asia, and Europe in prehistory, and counting humans are found global ...
s than any other
Old World monkey Old World monkeys are primates in the family Cercopithecidae (). Twenty-four genera and 138 species are recognized, making it the largest primate family. Old World monkey genera include baboons (genus '' Papio''), red colobus (genus '' Piliocolob ...
is. It is
endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to the island of
Sulawesi Sulawesi ( ), also known as Celebes ( ), is an island in Indonesia. One of the four Greater Sunda Islands, and the List of islands by area, world's 11th-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Min ...
in
Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...
, which is an important
biodiversity hotspot A biodiversity hotspot is a ecoregion, biogeographic region with significant levels of biodiversity that is threatened by human habitation. Norman Myers wrote about the concept in two articles in ''The Environmentalist'' in 1988 and 1990, after ...
. The Moor macaque is threatened mostly due to
habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...
from an expanding human population and
deforestation Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. Ab ...
to increase agricultural land area. The ''Macaca maura'' population is estimated to have decreased from 56,000 in 1983 to under 10,000 in 1994. In 1992, conducted an extensive survey and found 6.3–63.2 individuals/km2. They usually live in groups of 15-40 individuals, with female
philopatry Philopatry is the tendency of an organism to stay in or habitually return to a particular area. The causes of philopatry are numerous, but natal philopatry, where animals return to their birthplace to breed, may be the most common. The term derives ...
and male dispersal and they are diurnal and semi-terrestrial. They spend a lot of their time in trees
foraging Foraging is searching for wild food resources. It affects an animal's fitness because it plays an important role in an animal's ability to survive and reproduce. Foraging theory is a branch of behavioral ecology that studies the foraging behavi ...
and on the ground travelling. According to the Behavioural Data collection done on 2 groups of Moor macaques in the Bantimurung Bulusaraung National Park in South Sulawesi, this species spends most of their time feeding in places where food resources are abundant. The results also show that Moor macaques tend to spend more time
foraging Foraging is searching for wild food resources. It affects an animal's fitness because it plays an important role in an animal's ability to survive and reproduce. Foraging theory is a branch of behavioral ecology that studies the foraging behavi ...
as the group size increases as they spend less time in alertness. The population of this species is highly endangered due to serious anthropogenic activities like agriculture and tourism, which contribute to its
habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...
. Like many other frugivorous primates, Moor macaques  have made significant contributions to the environment, helping to support high densities of seedlings and saplings as well as the process of gene flow among plant populations. This is crucial for sustaining forest regeneration and restoring vegetation in degraded forests. This species has been on the
IUCN Red list of threatened species The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological spe ...
(A2cd) since 2015.


Taxonomy

The Moor macaque made its first appearance in western science through the work of
Heinrich Rudolf Schinz Heinrich Rudolf Schinz (30 March 1777 – 8 March 1861) was a Swiss people, Swiss physician and natural history, naturalist. Biography Schinz was born in Zürich and studied medicine at the universities of University of Würzburg, Würzburg a ...
in 1825.


Distribution and habitat

The Indonesian island of Sulawesi hosts 7 species of macaques with one of them being the Moor macaque. Unfortunately, the Moor macaque is
endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to the island and is considered to be endangered by the
IUCN Red List of Threatened Species The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological spe ...
. The Moor macaque is the only species of macaques that existed naturally in South Sulawesi. Moor macaques have significant ecological flexibility that enables them to use several forest strata, including secondary habitats. They have a different ecological environment compared to other nonhuman primates since they have no major predators or competitors except where their ranges overlap. The home range of the Moor macaque group is usually 20-30 ha wide, with a total distance of roughly 6.64 km. They can be found in lowland forests, grasslands, limestone areas and even near human habitations, and they are commonly found with the endemic Malkoha birds that feed on grasshoppers, which are pushed out of the canopy by the macaques' movements. Those living near humans have been observed to be more present in areas where domestic animals are found, as these areas do not have a lot of traps that endanger them. They are predominantly found in the
karst Karst () is a topography formed from the dissolution of soluble carbonate rocks such as limestone and Dolomite (rock), dolomite. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground. Ther ...
forest ecosystem of
South Sulawesi South Sulawesi () is a Provinces of Indonesia, province in the South Peninsula, Sulawesi, southern peninsula of Sulawesi, Indonesia. The Selayar Islands archipelago to the south of Sulawesi is also part of the province. The capital and largest ci ...
. The karst plain forest is more resourceful for these macaques as the latter contains an abundance of food. Researchers discovered that out of the 107 identified tree species, 74 of them were vital macaque food species with the remaining being food species of secondary importance. The latter information was put together due to a study that took place in the Bantimurung Bulusaraung National Park and specifically in the Karaenta area, a former nature reserve, where high density of fig trees as well as the fact that the Karaenta forest is separated from bigger forest tracts have led to a high population density of Moor macaques. As a result, Moor macaques have limited home ranges at this location. The
karst Karst () is a topography formed from the dissolution of soluble carbonate rocks such as limestone and Dolomite (rock), dolomite. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground. Ther ...
tower forest is less useful for the macaques in terms of acquiring food or other related resources but acts as a natural refuge from human disturbance. Another important area with significant Moor macaques is the Tabo-tabo forest in Pangkep and is considered to be a secondary forest area. The home range for primates is characterised by three factors; food availability, the distribution of the food, and the interval of changing fruit seasons.The Tabo-tabo forest is characterised as a secondary lowland forest and the latter created a suitable environment for the growth of plants on fertile
alluvial Alluvium (, ) is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluvium is also sometimes called alluvial deposit. Alluvium is ...
and Mediterranean red soils.The high diversity of plants and shelter provision in the area made the land extremely suitable for these macaques to thrive.


Behavior

The most common behavioural activities of Moor macaques are feeding, followed by moving, resting, and social interaction. Moor macaques are a male dispersing species. Males leave the groups in which they are born between the ages of 7 and 9, while females stay in their birth groups. This has an important purpose, it avoids inbreeding and broadens the genetic pool of the groups. Moor macaques groups have been observed to be tolerant and not very aggressive. Group fission occurs in Moor macaques, competition between females for food does not seem to be the reason for fission. However, some studies relate group fission to competition among females for food resources, others attribute it to increased sexual competition among males, and some others relate this phenomenon to establishing home ranges, specifically in Moor macaque groups with overlapped home ranges. The Sulawesi macaques, including Moor macaques, are further distinguishable from other macaques by their quiet bared-teeth display and the uttering of a loud call. Rather than conveying submission, as in most macaque species, the quiet bared-teeth display is thought to express the emitter's peaceful intentions, promoting positive interactions. All Sulawesi macaques, particularly adult males have emit a loud call, a particular, bird-like vocalization. During agonistic encounters, wild Moor macaques have low inter-individual distances, uncommon strong aggression, a strong conciliatory tendency, and limited support for kin. Predation is a key evolutionary factor. Snakes are one of the most prevalent primate predators, and the primates’ quick detection of predators may have contributed to the evolution of their visual and perceptual skills. When primates notice a snake, they frequently respond by making alarm calls that attract and/or notify other members of the group about its presence, and/or by mobbing it.


Sexual behavior

Perineal swelling is an important factor in the sexual life of Moor macaques. As this species does not have a marked reproductive season, not all females swell at the same time. Females start to swell between the age of 4 years and 6 years and have their first child between the age of 6 years and 7 years. Swelling individuals are more likely mounted by the males than non-swelling ones. The dominant and oldest female of the group is usually mounted by the alpha male. Non-
alpha males In the zoological field of ethology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social groups interact, creating a ranking system. Different types of ...
only mount females when the alpha is out of sight and lower ranking males usually mount non-swelling females, although in most Moor macaque groups, there is only one male. Poor dietary factors appear to be associated with a delay in the onset of perineal swelling and first parturition. From the end of the rainy season to the start of the dry season, there appeared to be a rise in births. The moor macaques are classified as moderately seasonal breeders based on the fact that 33-67% of their newborns occur in a single three-month period. The peak might be explained by yearly increases in food supply, particularly a rise in fruit. Female reproductive state differences within a group may have an effect on female furcation patterns, which may be more noticeable in egalitarian species where social interactions are less impacted by dominance or kinship. This furcation pattern may be caused by the tendency of adult females that are not cycling to stay near to one another.


Social behavior

Changes in group fission process and furcation patterns may reflect differences in social characteristics among species as well as ecological and demographic differences among populations; thus, studies of group fission may contribute to our general understanding of why primates live in a variety of groupings. Special relationships between certain males and females can either trigger or encourage group fission. In Moor macaques, however, significant connection between specific males and females does not appear to affect the process of fission. Moor macaque females are not actively involved in intergroup interactions. On the other hand, male aggression toward other groups is significantly more frequent than female aggression. Adult female furcation patterns can be anticipated by their connection with one another, such as grooming behavior, prior to group fission. However, the grooming habit of mature female Moor macaques was unrelated to the furcation. Individuals of similar age, sex, or rank tend to stay close to one another. Moor macaques are an ideal taxon to examine interspecific diversity in play behavior among nonhuman primates. Play is an excessive, spontaneous, and self-rewarding behavior that serves no immediate purpose and frequently takes place in non-stressful circumstances. Moor macaques spend a larger proportion of their time in solitary and social play than in grooming interactions. Play sessions in Moor macaques include more individuals, large variety of play behaviors, great play face rates, great proportion of time in contact play, and high rate of reciprocal play‐biting. Aggressive escalations were not common in Moor macaques.


Diet

Despite their frequently changing habitats, Moor macaques are characterized by having a flexible diet. Insects and other food items, including shoots and young leaves, are essential resources for Moor macaques, particularly in extensively altered habitats. The tree species known to be a diet are Garcinia nervosa, Arenga pinnata, Flacourtia rukam, Ficus. sp, Eugenia cuminii, Gastonia serratifolia, Mangifera sp., Spondias dulcis, and Muntingia calabura. Compared to other macaques, kinship in Moor macaques may have less of an influence on proximity during feeding. Weak kinship effects during feeding may be caused by a lack of food competition within the group. When within-group competition (WGC) for food resources is intense, lower-ranking females are likely to move away from original groupings and create new smaller groups.


Maternity

Moor macaques usually stay close to their matrilineal relatives more when they are moving or resting than when they are feeding. Females are in close proximity to females with newborn infants, regardless of the group's stage of activity.


Interaction with humans

Anthropogenic factors such as habitat fragmentation, alterations, along with non-species-specific hunting traps in the forest have become major risks to the Moor macaques' survival, with more than half of the population declining over three decades. Due to anthropogenic activities, Moor Macaque interactions with humans have increased. Primates are often victims of such occurrences because they have a hard time adapting to environmental disturbances. Due to their endemic status to the island of
Sulawesi Sulawesi ( ), also known as Celebes ( ), is an island in Indonesia. One of the four Greater Sunda Islands, and the List of islands by area, world's 11th-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Min ...
, most of their interactions used to be with the Bantimurung Bulusaraung National Park staff and researchers who would feed them, which is considered as consistent provisioning. Starting the year 2015, they started interacting with vehicles that would drive along a road located in their home range, which is considered as inconsistent provisioning. Based on the available research, human interaction damages the social networks of these macaques, and the latter is necessary for increase of infant survival, social ranking, reproductive success, and even enhanced
thermoregulation Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different. A thermoconforming organism, by contrast, simply adopts the surrounding temperature ...
during winter. According to a study about the habituation process, Moor macaques react differently to the presence of humans depending on their previous interactions with them. Moor macaques are better approached in areas of greater visibility with more trees. Food provisioning, in which people purposefully offer food to nonhuman primates, may result in rapid habituation of wildlife such that they approach humans for food, take food from their hands, and perhaps aggress toward them to elicit provisioning behavior. Provisioning can lead to reduced foraging energy consumption in monkeys, more time for resting and social behavior, and higher birth rates, provisioned foods can be good energy sources. However, because it is linked to a higher risk of injury, zoonotic disease transmission, and direct human interaction, provisioning may also be potentially dangerous for monkeys and other wildlife species. Studies have found that the relatively widespread habit of pet macaque ownership among a variety of ethnic and religious groups on the island explain the bidirectional disease transmission. The majority of Sulawesi macaques kept as pets are captured as infants by opportunistically trapping wild mother-infant pairs or by using traps to reduce crop raiding, which resulted in competition for resources. Moor macaques’ encounter rate is lower in areas with more open spaces and with no trees than in areas with greater forest cover. Moreover, the individual encounter rate is lower when more traps are found in an area and higher when more domestic animals are sighted in the area.


Conservation

The tourism industry, hunting, agriculture and logging are some of the big threats to the Moor macaques because they highly contribute to their habitat loss. This resulted in the change and loss of 80% of Sulawesi's forests, with just 30% remaining in good condition - which means forest canopy unbroken by large clearings and only scattered signs of human activity. Therefore, Moor macaques’ conservation has become a broader concern. Even in areas that are under local protection, deforestation is still observed in many forests of the southern parts of the Sulawesi Island, thus conservation of the population of Moor macaques should be a priority since its population is declining at a high rate. For conservation purposes, information on life histories and demography is essential. The conservation status of Moor macaques is considered high. However, due to significant habitat degradation, the condition of Moor macaques does not warrant optimism. It has been recommended that new reserves be established as well as expanding the existing reserves. Based on a study, challenges for species and their conservation efforts occurred as a result of the shrinking of forest areas and the deterioration of forest quality as habitat. Additionally, growing human populations have had a substantial negative influence on both populations and habitats of Moor macaques. According to a study done on the effects of anthropogenic activities on the population of Moor macaques, the population density of Moor macaques is low outside of protected areas and support the study's hypothesis that the population of this species is declining in several regions, especially in the southern forests of the species’ geographic range. Furthermore, they found a high presence of anthropogenic activity in forests inhabited by Moor macaques, and a negative effect of the number of non species-specific hunting traps in the forest on macaque encounter rate. In the National Park of Chamba District, South Sulawesi, there was an observed decrease in Moor macaques due to human settlement and road traffics which endanger the life of Moor macaques through food poisoning, and road accidents. During a survey in South Sulawesi, there was a high encounter of Moor macaques in agroforests, where it was seen that Moor macaques like feeding on corn. This is a sign that different types of plantations can influence the distribution and encounter rate of Moor macaques. This, with different interviews with local people inhabiting the area surveyed, combining a well conserved forest with small agricultural patches on landscape scape can have a positive effect on the conservation of Moor macaques. With other studies done on the effect of agroforests on the conservation of Moor macaques, it has been observed that agroforests and forests cover can positively affect or increase the population of Moor macaques. Therefore, for better conservation and for the benefit of remnant subpopulations, forests in South Sulawesi Island should be protected and conserved. Raising awareness of the ecological importance of Moor macaques, and motivating people to conduct activities that are ecologically sustainable are also good actions towards the conservation of Moor macaques. While there are some studies done in South Sulawesi, more studies have to be conducted on other parts of the Island for an adequate conservation of this species.


References


External links


Photos at ARKive.
{{Taxonbar, from=Q913762 moor macaque Primates of Indonesia Mammals of Sulawesi moor macaque Taxa named by Heinrich Rudolf Schinz