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Callitrichidae

The Callitrichidae (also called Arctopitheci or Hapalidae) 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.

Callitrichidae[1][2]
Major extant callitrichid genera: Callithrix, Leontopithecus, Saguinus, Cebuella, Mico, Callimico.
Scientific classification Edit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Primates
Suborder:Haplorhini
Infraorder:Simiiformes
Parvorder:Platyrrhini
Family:Callitrichidae
Thomas, 1903[3]
Type genus
Callithrix
Erxleben, 1777
Genera

See text

The range of Callitrichidae species.
Synonyms
  • Callitrichidae Napier and Napier, 1967
  • Hapalidae Wagner, 1840

This taxon was traditionally thought to be a primitive lineage, from which all the larger-bodied platyrrhines evolved.[4] However, some works argue that callitrichids are actually a dwarfed lineage.[5][6]

Ancestral stem-callitrichids likely were "normal-sized" ceboids that were dwarfed through evolutionary time. This may exemplify a rare example of insular dwarfing in a mainland context, with the "islands" being formed by biogeographic barriers during arid climatic periods when forest distribution became patchy, and/or by the extensive river networks in the Amazon Basin.[5]

All callitrichids are arboreal. They are the smallest of the simian primates. They eat insects, fruit, and the sap or gum from trees; occasionally, they take small vertebrates. The marmosets rely quite heavily on tree exudates, with some species (e.g. Callithrix jacchus and Cebuella pygmaea) considered obligate exudativores.[7]

Callitrichids typically live in small, territorial groups of about five or six animals. Their social organization is unique among primates, and is called a "cooperative polyandrous group". This communal breeding system involves groups of multiple males and females, but only one female is reproductively active. Females mate with more than one male and each shares the responsibility of carrying the offspring.[8]

They are the only primate group that regularly produces twins, which constitute over 80% of births in species that have been studied. Unlike other male primates, male callitrichids generally provide as much parental care as females. Parental duties may include carrying, protecting, feeding, comforting, and even engaging in play behavior with offspring. In some cases, such as in the cotton-top tamarin (Saguinus oedipus), males, particularly those that are paternal, even show a greater involvement in caregiving than females.[9] The typical social structure seems to constitute a breeding group, with several of their previous offspring living in the group and providing significant help in rearing the young.

Species and subspecies list

Emperor tamarin (Saguinus imperator)

Taxa included in the Callitrichidae are:[10][11][12][13]

References

Media related to Callitrichinae at Wikimedia Commons
Data related to Callitrichinae at Wikispecies

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