| Black tamarin [1] [2] | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Primates |
| Suborder: | Haplorhini |
| Infraorder: | Simiiformes |
| Family: | Callitrichidae |
| Genus: | Saguinus |
| Species: | S. niger |
| Binomial name | |
| Saguinus niger (É. Geoffroy, 1803) | |
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| Range of the Western Black-handed Tamarin | |
The black tamarin (Saguinus niger) or western black-handed tamarin is a species of tamarin endemic to Brazil.
Based on mitochondrial DNA analysis, black tamarins were found to be more closely related to populations on the same side of the Tocantins River than on the other, showing that the river constitutes an effective gene flow barrier. [4] As a consequence of the genetic divergence, as well as minor differences in pelage color, some recent authorities have argued for recognizing the population east of the Tocantins River as S. ursulus (eastern black-handed tamarin), leaving the "true" S. niger for the population west of this river. [5]
The closest living relative of the black tamarin is thought to be the golden-handed tamarin (S. midas). [6]
Black-handed tamarins are among the smallest primates, weighing approximately 500 grams. As with other tamarins, the hind limbs are longer than the forelimbs and the thumbs are not opposable. With the exception of the big toe, there are claws on all fingers and toes, as well as two molars on each side of the jaw. The face of the black tamarin is generally hairless. The fur is blackish-brown with lighter markings on the back, similar to the golden-handed tamarin but without the golden-orange feet and hands of that species. [7]
The geographic range of black-handed tamarins, which are endemic to Pará, Brazil, is limited by the Rio Amazonas (Amazon River) to the North, the Rio Tocantins (Tocantins River) to the East, the Rio Xingu (Xingu River) to the West, [8] and until recently, the Rio Gradaus (Gradaus River) to the South. [5] Photographic evidence of a black-handed tamarin in Confresa, a town in the northeastern region of the state of Mato Grosso, indicates an increase in the species' geographic range to the South. [9]
Some marmosets occupy small areas of forest in the Tapajós and Madeira Basins, but the black-handed tamarin is absent from these regions due to lack of food resources. However, this species is considered to be more tolerant of habitat disturbances than other Callitrichides. [10]
Black-handed tamarins are arboreal primates that prefer semi-deciduous forest for ease of foraging and thick growth as cover from aerial and terrestrial predators. [8] Due to deforestation in eastern Brazil, black-handed tamarins regularly rely on fragmented and disturbed secondary forest habitats. [11] Although much of the forest canopy has been destroyed, and black-handed tamarins have been seen moving through all levels of the forest, they are most active in the lower to middle (5-15m) strata of the forest. [10]
The species makes use of both primary and secondary forest during foraging, keeping primarily to the canopy and spending minimal time on the ground. [10] Black-handed tamarins subsist largely on fruit. During the dry season (November through January), when fruit is scarcer, they will also take arthropods such as grasshoppers and crickets, and eat the gum of Parkia pendula, an evergreen tree. [10] Even during the dry season, however, fruit from Tetragastris altissima and Inga alba trees is available. During the wet season, over 90 percent of the diet is fruit from as many as nine different species of trees, including Inga stipularis, Inga edulis , Bagassa guianensis, Pouteria lucuma , Pourouma guianesis, Manilkara bidentata , and Chrysophyllum sp.. [12] The seeds of many of these fruits are ingested and defecated. This process plays an important role in the regeneration of forests that are continuously threatened by logging. [13]
Due to the black-handed tamarin’s small size, they are considered prey by many other animals. Their predators include man, diurnal birds of prey, snakes, and various cat species including margay and ocelot, which are capable arboreal hunters. [14] Because black-handed tamarins have both aerial and terrestrial predators, they utilize any tree or bundled, thick foliage into which they can climb, and they maintain a group sleep system to keep safe while resting at night. [8]
The black-handed tamarin's social structure serves as an important line of defense against their predators. While much of their day is spent foraging, each individual keeps a lookout for predators and uses calls to alert their social unit. Although intimidating displays may be made toward predators or in territorial defense, the black-handed tamarin's primary defense is flight. The group aspect of their social structure is important to survival, as a single black-handed tamarin would not be able to forage and keep watch for predators safely and effectively. [8]
Tamarins typically live in extended family groups of 4 to 15 individuals. [15] Although groups of tamarins may have more than one female per group, only one typically breeds (with the exception of Goeldi's marmoset). Dominant female callitrichids suppress the reproductive activity of their daughters and other subordinate females within their family group. Because daughters of dominant females and other females born and remaining in a group tend not to ovulate, when a female becomes sexually mature, there are two options: either find another group or stay in the natal group. In the latter case, the daughter may someday become the dominant female, or she may cease to ovulate. Daughters may compete for the role of dominant female with their siblings. Subordinate members do not generally engage in sexual reproduction. [16]
All adult black-handed tamarin participate in raising and caring for the young, including non-reproductive members of the group (which may number 2-20 members). Group members coordinate and work together to find sufficient food items for infants and juveniles. Unlike many primate groups that provide juveniles with small amounts of food, this species has a cooperative breeding system that shares a substantial portion of food with the juveniles. When group size is large, the breeding male often spends less time attending to his own young because of the universal group effort. When there is sufficient food, or if the dominant female is close to the end of her reproductive cycle, multiple females may be allowed to reproduce in a group. [16]
A number of mating variations have been observed: monogamy, polygyny, polyandry, or polygynandy. [16]
Ovulation in female tamarins typically occurs between 12 and 17 months of age, whereas in male tamarins, sperm production occurs slightly later at about 13 to 18 months. [16] The birth of infants has been observed in both early January and mid July. [10] Black-handed tamarins (like all other Callitrichids) usually produce fraternal twins, but litters may consist of 2-4 infants. Triplets and quadruplets usually only occur in captivity. The growth of infants is very rapid; infants become independent within five months. Female callitrichids are able to conceive again after 2–4 weeks of giving birth to their previous offspring. [16]
The black-handed tamarin is classified as Vulnerable by the IUCN as a result of a 30% decrease in population size over the last 18 years, and is likely to become endangered if conservation measures are not taken. Because the major threat to the species appears to be a loss of suitable habitat, habitat conservation is thought to be key in their survival. The range of the black-handed tamarin is within one of the most densely inhabited areas of Brazil, where logging has removed a significant amount of the original forest, causing a decrease in food availability and refuges from predators. [3] However, black-handed tamarins are adaptable foragers that can make use of primary, secondary and logged forests, which increases the potential available range of habitat. [12] Populations are present in several reserves where logging is prohibited, including Gurupí Biological Reserve, Tapirapé Biological Reserve, and Caxiuanã National Forest. [3] In central-western Brazil, in the southern part of their range, most black-handed tamarins are only able to survive in the remains of forested areas on private properties. [9]
The Callitrichidae are a family of New World monkeys, including marmosets, tamarins, and lion tamarins. At times, this group of animals has been regarded as a subfamily, called the Callitrichinae, of the family Cebidae.
The golden lion tamarin, also known as the golden marmoset, is a small New World monkey of the family Callitrichidae. Endemic to the Atlantic coastal forests of Brazil, the golden lion tamarin is an endangered species. The range for wild individuals is spread across four places along southeastern Brazil, with a recent census estimating 3,200 individuals left in the wild and a captive population maintaining about 490 individuals among 150 zoos.
The pied tamarin, sometimes referred to as the Brazilian bare-faced tamarin, is a critically endangered species of primate found in a restricted area of the Brazilian Amazon Rainforest. It was named the mascot of Manaus, Brazil in 2005. The species is endangered due to the increasing size of the city of Manaus which is encroaching on their native habitat.
Geoffroy's tamarin, also known as the Panamanian, red-crested or rufous-naped tamarin, is a tamarin, a type of small monkey, found in Panama and Colombia. It is predominantly black and white, with a reddish nape. Diurnal, Geoffroy's tamarin spends most of its time in trees, but does come down to the ground occasionally. It lives in groups that most often number between three and five individuals, and generally include one or more adults of each sex. It eats a variety of foods, including insects, plant exudates, fruits and other plant parts. Insects and fruits account for the majority of its diet, but exudates are also important. But since its teeth are not adapted for gouging trees to get to the sap, it can only eat exudates when they are easily available.
Pygmy marmosets are two species of small New World monkeys in the genus Cebuella. They are native to rainforests of the western Amazon Basin in South America. These primates are notable for being the smallest monkeys in the world, at just over 100 g (3.5 oz). They are generally found in evergreen and river-edge forests and are gum-feeding specialists, or gummivores.
The tamarins are squirrel-sized New World monkeys from the family Callitrichidae in the genus Saguinus. They are the first offshoot in the Callitrichidae tree, and therefore are the sister group of a clade formed by the lion tamarins, Goeldi's monkeys and marmosets.
The buffy-tufted marmoset, also known as the buffy tufted-ear marmoset or white-eared marmoset, is a New World monkey that lives in the forests on the Atlantic coast of southeast Brazil. Of all the marmosets, it has the southernmost range.
The common marmoset, also called white-tufted marmoset or white-tufted-ear marmoset, is a New World monkey. It originally lived on the northeastern coast of Brazil, in the states of Piaui, Paraiba, Ceará, Rio Grande do Norte, Pernambuco, Alagoas, and Bahia. Through release of captive individuals, it has expanded its range since the 1920s to Southeast Brazil, where it became an invasive species, raising concerns about genetic pollution of similar species, such as the buffy-tufted marmoset, and predation upon bird nestlings and eggs.
The cotton-top tamarin is a small New World monkey weighing less than 0.5 kg (1.1 lb). This New World monkey can live up to 24 years, but most of them die by 13 years. One of the smallest primates, the cotton-top tamarin is easily recognized by the long, white sagittal crest extending from its forehead to its shoulders. The species is found in tropical forest edges and secondary forests in northwestern Colombia, where it is arboreal and diurnal. Its diet includes insects and plant exudates, and it is an important seed disperser in the tropical ecosystem.
The emperor tamarin is a species of tamarin monkey allegedly named for its resemblance to the German emperor Wilhelm II. It lives in the north Brazilian states of Acre and Amazonas and the southwest Amazon Basin, in east Peru, north Bolivia.
The golden-handed tamarin, also known as the red-handed tamarin or Midas tamarin, is a New World monkey belonging to the family Callitrichidae.
The golden-headed lion tamarin, also the golden-headed tamarin, is a lion tamarin endemic to Brazil. It is found only in the lowland and premontane tropical forest fragments in the state of Bahia, and therefore is considered to be an endangered species. It lives at heights of 3–10 metres (9.8–32.8 ft). Its preferred habitat is within mature forest, but with habitat destruction this is not always the case. Several sources seem to have different information on the number of individuals within a group, and the type of social system that may be apparent. The golden-headed lion tamarin lives within group sizes ranging from 2 to 11 individuals, with the average size ranging from 4 to 7. According to various sources, the group may consist of two adult males, one adult female, and any immature individuals, one male and one female and any immature individuals, or there may be one producing pair and a varying number of other group members, usually offspring from previous generations. There is not much known on its mating system, but according to different sources, and information on the possible social groups, it can be assumed that some may practice monogamous mating systems, and some may practice polyandrous mating systems. Both males and females invest energy in caring for the young, and all members of the group also help with juvenile care.
The moustached tamarin is a New World monkey and a species of tamarin. The moustached tamarin is named for the lack of coloring in the facial hair surrounding their mouth, appearing similar to a moustache. As with all New World monkeys, the moustached tamarin is found only in areas of Central and South America.
The brown-mantled tamarin, also known as Spix's saddle-back tamarin, is a species of saddle-back tamarin. This New World monkey is found in the Southern American countries of Bolivia, Brazil and Peru. This omnivorous member of the Callitrichidae family is usually found in smaller groups ranging between 4 and 15 individuals. This species communicates vocally and largely rely their olfactory system. The brown-mantled tamarin is considered as a species of Least Concern by the International Union for Conservation of Nature, despite a decreasing population and being threatened by poaching, habitat loss and capture for the illegal pet trade.
The golden-mantled tamarin is a tamarin species from South America. It is found in Ecuador and Peru, specifically in the upper Amazon (lowland), east of the Andes in Ecuador, and Northeast Peru; between the Rio Curaray and Rio Napo in Peru.
The bearded emperor tamarin is one of the two subspecies of the emperor tamarin. It is mostly found in the tropical forests of southwestern Brazil and eastern Peru. This omnivorous member of the Callitrichidae family is usually found in groups of 4 and shares social relations with other callitrichids. They communicate vocally, as well as with olfactory signals. Males tend to be primary caregivers for their young. It is considered as a species of Least Concern by the IUCN, despite threats from increased habitat loss.
Mico is a genus of New World monkeys of the family Callitrichidae, the family containing marmosets and tamarins. The genus was formerly considered a subgenus of the genus Callithrix.
Callithrix is a genus of New World monkeys of the family Callitrichidae, the family containing marmosets and tamarins. The genus contains the Atlantic Forest marmosets. The name Callithrix is derived from the Greek words kallos, meaning beautiful, and thrix, meaning hair.
Infanticide in non-human primates occurs when an individual kills its own or another individual's dependent young. Five hypotheses have been proposed to explain infanticide in non-human primates: exploitation, resource competition, parental manipulation, sexual selection, and social pathology.
The eastern black-handed tamarin is a species of tamarin endemic to Brazil.
[[Category:Taxa named by Étienne Geoffroy Saint-Hilaire
