Lion-tailed macaque

Source: Wikipedia, the free encyclopedia.

Lion-tailed macaque
Male at Bristol Zoo
Female at Singapore Zoo
CITES Appendix I (CITES)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Cercopithecidae
Genus: Macaca
Species:
M. silenus[1]
Binomial name
Macaca silenus[1]
Lion-tailed macaque range
Synonyms
  • Macaca albibarbatus (Kerr, 1792)
  • Macaca ferox (Shaw, 1792)
  • Macaca veter (
    Audebert
    , 1798)
  • Macaca vetulus (Erxleben, 1777)
  • Macaca silanus (F. Cuvier, 1822)
  • Simia silenus Linnaeus, 1758

The lion-tailed macaque (Macaca silenus), also known as the wanderoo, is an Old World monkey endemic to the Western Ghats of South India.

Characteristics

A male showing his canines
A skull preserved at the Naturalis Biodiversity Center in Leiden, Netherlands

Lion-tailed macaques are covered in black fur, and have a striking gray or silver mane that surrounds their face which can be found in both sexes. The face itself is hairless and black, being pinkish in infants less than a year old. They are named not for their mane, but for their tail, which is long, thin, and naked, with a lion-like, black tail tuft at the tip. The size of their tail is about 25 cm (9.8 in) in length. Their eyes are a shade of hazelnut with highlighting black eyelids. Lion-tailed macaques, like other macaques, have deep cheek pouches useful for storing food, and are quadrupedal with opposable digits. The mane that surrounds its face gives this monkey its German name Bartaffe – "beard ape". With a head-body length of 42–61 cm (17–24 in) and a weight of 2–10 kg (4.4–22.0 lb), it ranks among the smaller macaques species. Offspring are born with lighter faces and no mane, with the adult mane growing in after two months after birth.[4]

Behavior and ecology

Lion-tailed macaque in the Anamalai Hills

The lion-tailed macaque is a rainforest dweller, often being found in the upper canopy of

diurnal, meaning it is active exclusively in daylight hours. When they are active, they will spend half the day foraging, and the other half will be spent resting or finding new areas to forage.[4] Unlike other macaques, it typically avoids humans when possible. In group behavior, the lion-tailed macaque is much like other macaques, living in hierarchical groups of usually 10 to 20 members, which usually consist of few males, typically 1-3, and many females. They have a polygynous mating system with no specific breeding season. While there is no specific breeding season, they do tend to breed in the wet season when resources are most abundant.[4] Little time is spent grooming or playing with others in the group. Of the few males, only one will be the dominant male, who will protect his troop from others and be the one who breeds. It is a territorial animal, defending its area first with loud cries and bared teeth towards the invading troops. If this proves to be fruitless, it brawls aggressively, which can result in severe injuries due to lacerations from their large canines. Other forms of communication come in the form of mounting to show strength, branch shaking to scare off, lip-smacking as a friendly greeting, or yawning with a grimace to indicate dominance.[4]

Mating

Lion-tailed macaque behavior is characterized by typical patterns of

pioneer plants.[5] In the forests of Kerala they were observed preying on nestlings and eggs of pigeons.[6]

Gestation lasts approximately six months. The young are nursed for one year. Sexual maturity is reached at four years for females, and six years for males. The life expectancy in the wild is approximately 20 years, while in captivity is up to 30 years.[7]

Threats

While lion-tailed macaques are preyed on by snakes, raptors, and large carnivores, the impact of natural predators on population size does not compare to their largest threat. The largest threat to the lion-tailed macaque is habitat fragmentation due to large amounts of timber harvesting and exotic plantations, such as tea and coffee.[2] This fragmentation leads to many issues that the lion-tailed macaques are facing. They are struggling to find food, being hit by cars, and being electrocuted by power lines.[4] Due to their low numbers and high levels of fragmentation, they are also highly susceptible to inbreeding, which can cause many genetic issues.[8] Their second largest threat is from humans hunting and trapping them for meat, especially within areas that have primates as their preferred food. There are also many human-primate conflicts occurring now due to macaques venturing out of their forests to find food.

Conservation and population

Female lion-tailed macaque with her infant

An assessment in 2003 for

IUCN reports 3000–3500 of these animals live scattered over several areas in Tamil Nadu, Kerala, Karnataka.[9]
The lion-tailed macaque ranks among the rarest and most threatened primates. Their range has become increasingly isolated and fragmented by the spread of agriculture and tea, coffee, teak and cinchona, construction of water reservoirs for irrigation and power generation, and human settlements to support such activities. They do not live, feed or travel through plantations. Destruction of their habitat and their avoidance of human proximity have led to the drastic decrease of their population.

From 1977 to 1980, public concern about the endanged status of lion-tailed macaque became the focal point of

Chimmony Wildlife Sanctuary and Wayanad region.[citation needed
]

A self-sustainable single population of 32 groups of lion-tailed macaques occurred in

Anaimalai Tiger Reserve of Coimbatore in Tamil Nadu. Many zoos take part in breeding programs which help to secure the survival of this species. About 338 of these macaques are reported to live in zoos.[7] (In July 2021 Australia's Rockhampton Zoo euthanased Australia's last lion-tailed macaque after its companion died of natural causes.[13]
) However, it is no longer on ‘The World's 25 Most Endangered Primates’ list, after the international body compiling it determined that the local governments in southern India had acted positively to protect it.[citation needed]

See also

References

  1. OCLC 62265494
    .
  2. ^ a b c Singh, M.; Kumar, A. & Kumara, H.N. (2020). "Macaca silenus". IUCN Red List of Threatened Species. 2020: e.T12559A17951402. Retrieved 17 January 2022.
  3. ^ Linne, C. (1758). "Simia silenius". Systema naturæ. Regnum animale. Vol. I (Tenth ed.). Lipsiæ: Sumptibus Guilielmi Engelmann. p. 26.
  4. ^ a b c d e f "Lion-Tailed Macaque | New England Primate Conservancy". 11 December 2021. Retrieved 12 April 2022.
  5. ^ a b Singh, Mewa & Kaumanns, Werner (10 October 2005). "Behavioural studies: A necessity for wildlife management" (PDF). Current Science. 89 (7): 1233.
  6. ^ Balakrishnan, Peroth (24 December 2010). "Predation of eggs and nestlings of pigeons (Columbidae) by the lion-tailed macaque Macaca silenus in the Western Ghats, India" (PDF). Indian Birds. 6 (6): 167–168.
  7. ^ a b "Lion-tailed Macaque". World Association of Zoos and Aquariums (WAZA), Virtual Zoo. Archived from the original on 25 February 2009. Retrieved 24 May 2007.
  8. ^ Strawder, Nicole. "Macaca silenus (liontail macaque)". Animal Diversity Web. Retrieved 12 April 2022.
  9. ^ Molur S, D Brandon-Jones, W Dittus, A. Eudey, A. Kumar, M. Singh, M.M. Feeroz, M. Chalise, P. Priya & S. Walker (2003). Status of South Asian Primates: Conservation Assessment and Management Plan (C.A.M.P.) Workshop Report, 2003. Zoo Outreach Organization/CBSG-South Asia, Coimbatore
  10. ^ Ramachandran, K. K. & Joseph, Gigi K. (2001). "Distribution and demography of diurnal primates in Silent Valley National Park and adjacent areas, Kerala, India". Journal of the Bombay Natural History Society. 98 (2): 191–196.
  11. S2CID 30384142
    .
  12. ^ "Nilgiri Tahr, lion-tailed macaque sighted in Theni district". The Hindu. Chennai, India. 9 May 2007. Archived from the original on 27 June 2007.
  13. ^ "'The right thing': Heartbroken zoo keepers euthanase nation's last lion-tailed macaque". www.abc.net.au. 21 July 2021. Retrieved 21 July 2021.

External links

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