Uakari

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Uakari[1]
Bald uakari (Cacajao calvus)
CITES Appendix I (CITES)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Pitheciidae
Subfamily: Pitheciinae
Genus: Cacajao
Lesson
, 1840
Type species
Simia melanocephalus
, 1812
Species

Cacajao melanocephalus

Cacajao calvus

Cacajao ayresi

Cacajao hosomi

Uakari (UK: /wəˈkɑːri/,[2] US: /wɑː-/)[3] is the common name for the New World monkeys of the genus Cacajao. Both the English and scientific names are believed to have originated from indigenous languages.[4]

The uakaris are unusual among New World monkeys in that the tail length (15–18 cm) is substantially less than their head and body length (40–45 cm). Their bodies are covered with long, loose hair but their heads are bald. They have almost no subcutaneous fat, so their bald faces appear almost skull-like. Like their closest relatives the saki monkeys, they have projecting lower incisors. These monkeys have the most striking red facial skin of any primate. Females choose their mates based on how red the male's face is. Evidence suggests that the red facial coloration reflects the health of the primate.[5]

The four species of uakari currently recognized are all found in the north-western

black-headed uakari is found north of the Amazon and south of the Rio Negro. The Neblina uakari is found north of the Rio Negro, west of the Rio Marauiá and east of the Casiquiare canal. The Aracá uakari
is currently known only from the Rio Curuduri basin.

They have been observed both in small groups and in larger troops of up to 100. When traveling through the forest they move in the lower branches of the trees, though when foraging they also go up to the canopy. They mostly

eat fruit, and unlike other Neotropical frugivores will consume a large amount of unripe fruit for which they have specialised dentition. They also eat flowers, seeds, invertebrates, buds and leaves.[7]

Uakari are found in neotropical

riparian forests, including Brazil, Colombia, Peru and Venezuela.[7]

A phylogeographic reconstruction found that the concestor of living uakari dates to 1.7 million years ago, in the Solimões River, whence they spread and diversified following intermittent river rearrangements.[8]

Species

There are four species in this genus:[1][9]

  • Genus Cacajao
    • Bald uakari or red uakari, C. calvus
      • Cacajao calvus calvus
      • Cacajao calvus ucayalii
      • Cacajao calvus rubicundus
      • Cacajao calvus novaesi
  • Black-headed uakari species group

In 2014 Ferrari et al. proposed an alternative taxonomy for the C. melanocephalus group which recognizes the Aracá uakari as a subspecies of the golden-backed uakari, and also recognized Cacajao ouakary as a separate species, whereas current consensus is that C. ouakary is a junior synonym of C. melanocephalus.[10][11] This revision is not universally accepted.[12]

Male bald uakari

References

  1. ^
    OCLC 62265494
    .
  2. ^ "uakari". Lexico UK English Dictionary. Oxford University Press. Archived from the original on November 23, 2021.
  3. ^ "uakari". Merriam-Webster.com Dictionary.
  4. ISSN 1413-4705
    .
  5. .
  6. ^ Wolfe, A. (1997) Primates, San Francisco: Chronicle Books, p. 159
  7. ^ a b Gron, K.J. (July 21, 2008). "Primate Factsheets: Uakari (Cacajao) Taxonomy, Morphology, & Ecology". Retrieved July 1, 2012.
  8. ISSN 0305-0270
    .
  9. S2CID 26561719. Archived from the original
    (PDF) on 2008-10-31.
  10. .
  11. ^ "Cacajao". ASM Mammal Diversity Database. Retrieved 2019-07-24.
  12. ^ "Cacajao". ITIS. Retrieved 2 September 2022.

External links

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