Sun-tailed monkey

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Sun-tailed monkey [1]
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Cercopithecidae
Genus: Allochrocebus
A. solatus
Binomial name
Allochrocebus solatus
Cercopithecus solatus distribution.svg
Geographic range
Synonyms [2]

The sun-tailed monkey (Allochrocebus solatus) from Gabon is one of the least studied primates in its habitat. [3] It was discovered as a new species in 1988, and is classified as a guenon, which is a member of the genus Cercopithecus, but was subsequently moved to the genus Allochrocebus. [1] [4] [5] It is closely related to A. preussi and A. Ihoesti, which has been determined by chromosomal analysis. [6] Sun-tailed monkeys prefer shady areas with dense vegetation. However, even after small amounts of logging activity, populations can be unaffected. Much of their diet remains unknown and is still being studied, but they are known to prefer fruit. Their social groups are made up of one male and multiple females. [2] Generally, the sun-tailed monkey is less aggressive towards related individuals, which is noteworthy because it has been found that, in other primate species, aggression rates towards related individuals are generally as high or higher than aggression rates towards non-related individuals. Within their social groups, individual monkeys show preference for their mothers over their fathers, and are overall less aggressive to other monkeys that they are associated with spatially. [7]


Conservation status

The Sun-tailed monkey is a Class B protected species under the African Convention and Appendix II of CITES. The Gabonese government gave it protected status in 1994 and some animals are kept there in captivity. Around 10% of the monkey's habitat is in the Lopé National Park, but the highest density is at the Foret des Abeilles, which is still unprotected. It is recommended that there should be more monitoring of hunting and logging activity in its habitat, as well as more research into the distribution and biology of the species in general. Occasionally, there have been reports of monkeys raiding crops in local villages. [2] However, there is not much study into how these interactions with humans affect the populations as a whole.


As one of the most poorly known nonhuman primate species with only one semi-captive population in the world, not much is known about its genome or biochemistry. However, there has been some research conducted into the blood biochemistry of the animal. Blood analysis of the sun-tailed monkey reveals that males show higher levels of hemoglobin and hematocrit than females. Females, however, showed higher levels of cholesterol and had higher neutrophil counts. In general, as the monkey ages, levels of blood urea increase and albumin protein levels decrease, which suggest declining liver, kidney and muscle function through life. [3]

Related Research Articles

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Old World monkey Family of mammals

Old World monkey is the common English name for a family of primates known taxonomically as the Cercopithecidae. Twenty-four genera and 138 species are recognized, making it the largest primate family. Old World monkey genera include baboons, macaques, and mabahlls. Common names for other Old World monkeys include the talapoin, guenon, colobus, douc, vervet, gelada, mangabey, langur, mandrill, surili (Presbytis), patas, and proboscis monkey. Phylogenetically, they are more closely related to apes than to New World monkeys. They diverged from a common ancestor of New World monkeys around 55 million years ago.

<i>Mandrillus</i> Genus of Old World monkeys

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Birougou National Park

Birougou National Park, also known as the Monts Birougou Wetlands, is a national park in central Gabon. It contains extremely dense rain forest in the Chaillu Mountains and is one of the two parks where the endemic sun-tailed guenon, a monkey first described in 1988, can be found. It is named after Mount Birougou,1.83816°S 12.31702°E, 975 metres in altitude, one of the highest peaks in the country.

De Brazzas monkey Species of Old World monkey

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LHoests monkey Species of mammal

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Wolfs mona monkey Species of Old World monkey

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Black colobus Species of Old World monkey

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Red-eared guenon Species of Old World monkey

The red-eared guenon, red-eared monkey, or russet-eared guenon is a species of primate in the family Cercopithecidae. It is found in Cameroon, Equatorial Guinea, and Nigeria. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss, illegal bushmeat hunting and pet trade.

Lesser spot-nosed monkey Species of Old World monkey

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Crested mona monkey Species of Old World monkey

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  1. 1 2 Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. p. 158. ISBN   0-801-88221-4. OCLC   62265494.
  2. 1 2 3 4 Abernethy, K.; Maisels, F.; Coad, L. (2019). "Allochrocebus solatus". The IUCN Red List of Threatened Species. 2019: e.T4230A92346555. doi:10.2305/IUCN.UK.2019-1.RLTS.T4230A92346555.en.
  3. 1 2 Motch, Peggy; Gonzalez, Jean-Paul; Verrier, Delphine (23 January 2012). "Clinical Biochemistry and Hematology of the Elusive Sun-Tailed Monkey(Cercopithecus solatus) in Gabon: Inaugural Data From the Only SemifreeRanging Colony in the World". American Journal of Primatology. 74 (3): 236–246. doi:10.1002/ajp.21993. PMID   24006542.
  4. "Allochrocebus". ITIS. Retrieved 2019-07-18.
  5. "Allochrocebus". Mammal Diversity Database. Retrieved 2019-07-18.
  6. Harrison, Michael J. S. (1988-07-01). "A new species of guenon (genusCercopithecus) from Gabon". Journal of Zoology. 215 (3): 561–575. doi:10.1111/j.1469-7998.1988.tb02860.x. ISSN   1469-7998.
  7. Charpentier, Marie J. E.; Deubel, Delphine; Peignot, Patricia (2008-04-01). "Relatedness and Social Behaviors in Cercopithecus solatus". International Journal of Primatology. 29 (2): 487–495. doi:10.1007/s10764-008-9246-9. ISSN   0164-0291.

Further reading