Buffy-tufted-ear marmoset (Callithrix aurita)

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Buffy-tufted-ear marmoset fact file

Buffy-tufted-ear marmoset description

KingdomAnimalia
PhylumChordata
ClassMammalia
OrderPrimates
FamilyCallitrichidae
GenusCallithrix (1)

The buffy-tufted-ear marmoset belongs to a family of tiny New World monkeys, the Callitrichidae, which comprises the marmosets and tamarins (4). Like other marmosets, the buffy-tufted-ear marmoset has striking ear tufts which, as its common name suggests, are coloured pale buff or whitish. The sides of the head are densely furred and black, while, in contrast, the crown is creamy white. The rest of the body is dark blackish brown, with the exception of the tail, which is grizzled yellowish-grey and marked with distinct black bands. Unlike some of the larger New World monkeys, the tails of marmosets and tamarins are not prehensile, but are extremely long and used for balance. The buffy-tufted-ear marmoset’s vocalisations comprise a variety of high-pitched whistles, chirps and twitters (2).

Also known as
buffy-eared marmoset.
French
Marmouset À Oreilles Blanches, Oustiti À Oreilles Blanches, Oustiti Oreillard.
Size
Head-body length: 19 – 24.8 cm (2)
Tail length: 27 to 35 cm (2)
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Buffy-tufted-ear marmoset biology

Active during the day, the buffy-tufted-ear marmoset can be found in small groups foraging in the tree canopy (2). Like other marmosets, a large portion of this species’ diet consists of gums and saps, obtained either by licking holes made by wood boring insects, or by gouging tree trunks, branches and vines of certain plant species with the specialised, small, tusk-like canine teeth of the lower jaw (2) (5). This latter form of gum extraction is quite destructive, often leaving trees riddled with hundreds of small slits and holes (2). While gum is consumed throughout the year, this species will preferentially take fruits during the wet season, and, unusually for a marmoset, will also feed on certain species of fungi found on bamboo (1) (5). Insects are another major source of food for this species, and may include grasshoppers (5), as well as swarms of army ants (7).

Buffy-tufted-ear marmoset groups may comprise either a single breeding pair, along with their offspring and sometimes members of extended family (1) (8), or a single male with multiple female breeding partners and their offspring (5) (9). Home ranges are relatively large, with a significant portion actively defended as the group’s territory (5). Marmosets generally give birth to non-identical twins, which are cooperatively reared within the group, with both parents and other family members sharing the duty of carrying the vulnerable infants (2) (8).

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Buffy-tufted-ear marmoset range

Endemic to Brazil, the buffy-tufted-ear marmoset is found in the southern part of the state of Minas Gerais, throughout Rio de Janeiro, and in the east and north-east of São Paulo (1).

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Buffy-tufted-ear marmoset habitat

The buffy-tufted-ear marmoset inhabits the Atlantic Forest region, generally occurring in montane rainforests, as well as disturbed secondary forest, up to elevations of 1,200 metres, where temperatures may fall below freezing during the dry season (April to September) (5) (6).

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Buffy-tufted-ear marmoset status

Classified as Vulnerable (VU) on the IUCN Red List (1) and listed on Appendix I on CITES (3).

IUCN Red List species status – Vulnerable

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Buffy-tufted-ear marmoset threats

The major threat to the buffy-tufted-ear marmoset is the widespread destruction of its Atlantic Forest habitat. The effects have been particularly severe in lowland areas, apparently leading to the extinction of this species from lowland forest in the state of São Paulo. Additional threats to the buffy-tufted-ear marmoset include hunting for trade, as well as competition and interbreeding with introduced marmoset species. With a declining, highly fragmented population, this species faces an uncertain future (1).

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Buffy-tufted-ear marmoset conservation

The buffy-tufted-ear marmoset is currently listed on Appendix I of the Convention on International Trade in Endangered Species (CITES), which prohibits all international trade in this species (3). In addition, the buffy-tufted-ear marmoset is found in a few protected areas throughout its range (1). Despite the drastic levels of destruction and fragmentation of the Atlantic Forest, the region is now receiving extensive conservation attention, which hopefully will help to ensure the survival of the buffy-tufted-ear marmoset (10) (11) (12).

View information on this species at the UNEP World Conservation Monitoring Centre.
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Find out more

To learn more about conservation measures being employed in the buffy-tufted-ear marmoset’s habitat, visit:

 

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Authentication

Authenticated (16/04/2009) by Matthew Richardson, primatologist and author

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Glossary

Atlantic Forest
A highly biodiverse region found along the east coast of South America, comprising several different vegetation types, including high-altitude grassland, and lowland and montane forest.
Endemic
A species or taxonomic group that is only found in one particular country or geographic area.
Prehensile
Capable of grasping.
Secondary forest
Forest that has re-grown after a major disturbance, such as fire or timber harvest, but has not yet reached the mature state of primary forest.
Territory
An area occupied and defended by an animal, a pair of animals or a colony.
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References

  1. IUCN Red List (March, 2009)
    http://www.iucnredlist.org
  2. Emmons, L.H. and Feer, F. (1997) Neotropical Rainforest Mammals. University of Chicago Press, Chicago.
  3. CITES (March, 2009)
    http://www.cites.org
  4. Nowak, R.M. (1999) Walker's Mammals of the World: Volume 2. Johns Hopkins University Press, Baltimore, Maryland.
  5. Ferrari, S.F., Corrêa, H.K.M. and and Coutinho, P.E.G. (1996) Ecology of the “southern” marmosets (Callithrix aurita and Callithrix flaviceps). In: Norconk, M.A., Rosenberger, A.L., and Garber, P.A. (Eds.) Adaptive Radiations of Neotropical Primates. Plenum Press, New York.
  6. Corrêa, H.K.M., Coutinho, P.E.G. and Ferrari, S.F. (2000) Between-year differences in the feeding ecology of highland marmosets (Callithrix aurita and Callithrix aviceps) in southeastern Brazil. Journal of the Zoological Society of London, 252: 421 - 427.
  7. Martins, M.M. (2000) Foraging over army ants by Callithrix aurita (Primates: Callitrichidae): Seasonal occurence?. Revista de Biología Tropical, 48: 1 - .
  8. Santos, C.V. and Martins, M.M. (2000) Parental care in the buffy-tufted-ear marmoset (Callithrix aurita) in wild and captive groups. Revista Brasileira de Biologia, 60: 667 - 672.
  9. Coutinho, P.E.G. and Corrêa, H.K.M. (1995) Polygyny in a free ranging group of buffy-tufted-ear-marmosets (Callithrix aurita). Folia Primatologica, 65: 25 - 29.
  10. Conservation International – Biodiversity Hotspots (March, 2009)
    http://www.biodiversityhotspots.org/xp/hotspots/atlantic_forest
  11. WWF (March, 2009)
    http://wwf.panda.org/what_we_do/where_we_work/atlantic_forests/
  12. The Nature Conservancy (March, 2009)
    http://www.nature.org/wherewework/southamerica/brazil/work/art5080.html
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Image credit

Buffy-tufted-ear marmoset in tree  
Buffy-tufted-ear marmoset in tree

© Juan Luiz Marigo / StillPictures.com

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