The bonnet macaque (Macaca radiata), also known as zati,[2] is a species of macaqueendemic to southern India. Its distribution is limited by the Indian Ocean on three sides and the Godavari and Tapti Rivers, along with its related competitor the rhesus macaque in the north.[1][3][4] Land use changes in the last few decades have resulted in changes in its distribution boundaries with the rhesus macaque, raising concern for its status in the wild.[5][6]
The bonnet macaque is diurnal, arboreal, and terrestrial. Males have a head-body length of 51.5–60 cm (20.3–23.6 in) with a 51–69 cm (20–27 in) tail while females are 34.5–52.5 cm (13.6–20.7 in) with a 48–63.5 cm (18.9–25.0 in) tail. Males weigh 5.4–11.6 kg (12–26 lb) and females 2.9–5.5 kg (6.4–12.1 lb).[7] It can live up to 35 years in captivity.[8]
The bonnet macaque feeds on fruits, nuts, seeds, flowers, invertebrates, and cereals. In southern India, this macaque exists as commensal to humans, feeding on food given by humans and raiding crops and houses.[8]
Macaca radiata diluta, dark-bellied bonnet macaque,[1] found in Southeast India in the states of Kerala and Tamil Nadu. From the southern coast north to Kambam at the base of the Palni Hills and east to Puducherry.[7]
Reproduction
Bonnet macaques attain reproductive maturity when they are three to four years old.[9] The majority of births take place from February to April, before the arrival of the monsoon.[9] Bonnet monkeys are polygynandrous.[10] The gestation period lasts 24 weeks and a single infant is the normal result of a pregnancy.[9] The young will breast feed for six to seven months and begin assisted feedings of solid food from their mother thereafter.[9] Other members of the troop, especially related females, will express interest in the infant in its first months of life.[11]
Behavior
The bonnet macaque has a very wide range of gestures and behaviors, which can be easily differentiated. Lip-smacking is one of the most common affiliative behaviors, where one individual may open and close its mouth in rapid succession, with its tongue between its teeth and its lips pressing against each other, giving an audible sound. A grimace is the most common gesture of fear or submission that a subordinate shows to a dominant individual during aggressive encounters. It consists of pulling back its upper lip, showing its upper teeth. It also has distinct alarm calls for predators such as pythons and leopards.[12][13]
Social structure
Bonnet macaque with baby in Kerala
The bonnet macaque are very social animals and they communicate in a different range of facial expressions. The bonnet macaque, like other macaques, shares a linear dominance hierarchy; the alpha male is the most dominant male of the troop, followed by a beta male and a gamma male, and so on according to their dominance. Similarly, females also follow this linear hierarchy. The male and female hierarchies are different and of a non-overlapping or non-mixing types. Males are usually dominant over females.[14] In their social groups females tend to stay in the same group they were born in, whereas males tend to disperse.[7]
The females' dominance hierarchy is stable, whilst the males' dominance hierarchy is very dynamic. In the male hierarchy, males close in rank often fight to rise in rank. A male has the best chance of obtaining a high rank in his prime age, resulting in the greatest benefits to reproduction. High-ranking individuals have first access to breeding females. Females are receptive during only a few months in a year, resulting in competition between males. In this situation, the ranks established by aggressive encounters come into play. Most of these aggressive encounters are easily resolved, but competition between similarly built or similarly aggressive males results in brutal and sometimes fatal fights. Female bonnet macaques attempt kidnappings of lower-ranking females. These are done mostly by mother females and the majority of the time they are not successful in completing it.[15] Different males may employ various means to rise in rank. Coalition formation between unrelated males to oust a more dominant male has been observed. Males often move from troop to troop to gain a higher rank with the resulting benefits. However, males remaining in a single troop have been observed to rise to become dominant male of that troop.
An important note is male bonnet macaques are generally far more laid back and carefree in their social lives than many other macaque species. Competition among male bonnet macaques is much more subdued and there is a much higher emphasis on pacifism. Male bonnet macaques groom each other, hug each other, sleep near each other, play together and engage in male-male mounting as a social defuser. While assertive males may take measures to monopolize matings, they cannot control females and these females will mate promiscuously, as macaques do. Some mysterious environmental pressures must have driven the bonnet macaque to form an unusually egalitarian social structure. Why this trend crops up convergently in separate macaque species rather than being an ancestral macaque trait is an enigma. A possible driving force may be these pacifist species inhabit more fertile habitats with more abundant food. Bonnet macaques are also strong swimmers.[8]
In the case of females, the stable dominance hierarchy is a result of female philopatry, when individuals tend to remain with the troop into which they are born. This results in the formation of matrilinear groupings of closely related females.[8]
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Wikispecies has information related to Bonnet macaque.
^ abcdSingh, M.; Kumara, H.N.; Kumar, A. (2020). "Macaca radiata". IUCN Red List of Threatened Species. 2020: e.T12558A17951596. doi:10.2305/IUCN.UK.2020-2.RLTS.T12558A17951596.en. Retrieved 19 November 2021.
^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. 164. ISBN0-801-88221-4. OCLC 62265494.
^Fooden, Jack (1988). "Taxonomy and evolution of the sinica group of macaques : 6. Interspecific comparisons and synthesis". Fieldiana Zoology. New Series. 45: 1–44. doi:10.5962/bhl.title.2841.
^Kumar, R. Radhakrishna; S. Sinha, A. (2011). "Of Least Concern? Range extension by rhesus macaques (Macaca mulatta) threatens long-term survival of bonnet macaques (M. radiata) in Peninsular India". International Journal of Primatology. 32 (4): 945. doi:10.1007/s10764-011-9514-y. S2CID 35227050.
^Govindarajan, Vinita. "South India is losing its endemic bonnet monkey to an aggressive invader from the north". Scroll.in. Retrieved 2017-09-14.
^ abcdeAnandam, M. V. (2013). "Family Cercopithecidae: Old World Monkeys". In Mittermeier, Russell A.; Rylands, Anthony B.; Wilson, Don E. (eds.). Handbook of the Mammals of the World. Volume 3. Primates. Barcelona: Lynx Edicions. pp. 238–639. ISBN978-84-96553-89-7.
^"Bonnet Macaque". World Land Trust. Retrieved 27 August 2022.
^Silk, Joan B. (1999). "Why are infants so attractive to others? The form and function of infant handling in bonnet macaques" (PDF). Animal Behaviour. 57 (5): 1021–1032. doi:10.1006/anbe.1998.1065. PMID 10328788. S2CID 1753907. Retrieved 27 August 2022.
^Coss, Richard G.; McCowan, Brenda; Ramakrishnan, Uma (2007). "Threat-related acoustical differences in alarm calls by wild bonnet macaques (Macaca radiata) elicited by python and leopard models" (PDF). Ethology. 113 (4): 352. doi:10.1111/j.1439-0310.2007.01336.x.
^"Friends help more promptly, at least in monkeys". ScienceDaily. 2012-07-31. Retrieved 2013-04-25.
^Singh, Mewa; Jeyaraj, Tephillah; Prashanth, U.; Kaumanns, Werner (2010). (PDF). International Journal of Primatology. 32: 167–176. doi:10.1007/s10764-010-9448-9. S2CID 18967639. Archived from the original (PDF) on 2014-10-14.
^Silk, Joan B. (1980-01-01). "Kidnapping and female competition among captive bonnet macaques". Primates. 21 (1): 100–110. doi:10.1007/BF02383827. ISSN 1610-7365. S2CID 11983515.
February 12, 2023
bonnet, macaque, bonnet, macaque, macaca, radiata, also, known, zati, species, macaque, endemic, southern, india, distribution, limited, indian, ocean, three, sides, godavari, tapti, rivers, along, with, related, competitor, rhesus, macaque, north, land, chang. The bonnet macaque Macaca radiata also known as zati 2 is a species of macaque endemic to southern India Its distribution is limited by the Indian Ocean on three sides and the Godavari and Tapti Rivers along with its related competitor the rhesus macaque in the north 1 3 4 Land use changes in the last few decades have resulted in changes in its distribution boundaries with the rhesus macaque raising concern for its status in the wild 5 6 Bonnet macaqueBonnet macaque Macaca radiata Mangaon Maharashtra IndiaConservation statusVulnerable IUCN 3 1 1 Scientific classificationKingdom AnimaliaPhylum ChordataClass MammaliaOrder PrimatesSuborder HaplorhiniInfraorder SimiiformesFamily CercopithecidaeGenus MacacaSpecies M radiataBinomial nameMacaca radiata E Geoffroy 1812 Bonnet macaque rangeSynonymsdiluta Pocock 1931juvenile The bonnet macaque is diurnal arboreal and terrestrial Males have a head body length of 51 5 60 cm 20 3 23 6 in with a 51 69 cm 20 27 in tail while females are 34 5 52 5 cm 13 6 20 7 in with a 48 63 5 cm 18 9 25 0 in tail Males weigh 5 4 11 6 kg 12 26 lb and females 2 9 5 5 kg 6 4 12 1 lb 7 It can live up to 35 years in captivity 8 The bonnet macaque feeds on fruits nuts seeds flowers invertebrates and cereals In southern India this macaque exists as commensal to humans feeding on food given by humans and raiding crops and houses 8 Contents 1 Taxonomy 2 Reproduction 3 Behavior 3 1 Social structure 4 ReferencesTaxonomy EditTwo subspecies of bonnet macaques have been identified 7 Macaca radiata radiata pale bellied bonnet macaque 1 found in South and West India between the Tapti River Palni Hills and Timbale In the 16th century it was introduced to the Mascarene Islands Mauritius and Reunion 7 Macaca radiata diluta dark bellied bonnet macaque 1 found in Southeast India in the states of Kerala and Tamil Nadu From the southern coast north to Kambam at the base of the Palni Hills and east to Puducherry 7 Reproduction EditBonnet macaques attain reproductive maturity when they are three to four years old 9 The majority of births take place from February to April before the arrival of the monsoon 9 Bonnet monkeys are polygynandrous 10 The gestation period lasts 24 weeks and a single infant is the normal result of a pregnancy 9 The young will breast feed for six to seven months and begin assisted feedings of solid food from their mother thereafter 9 Other members of the troop especially related females will express interest in the infant in its first months of life 11 Behavior EditThe bonnet macaque has a very wide range of gestures and behaviors which can be easily differentiated Lip smacking is one of the most common affiliative behaviors where one individual may open and close its mouth in rapid succession with its tongue between its teeth and its lips pressing against each other giving an audible sound A grimace is the most common gesture of fear or submission that a subordinate shows to a dominant individual during aggressive encounters It consists of pulling back its upper lip showing its upper teeth It also has distinct alarm calls for predators such as pythons and leopards 12 13 Social structure Edit Bonnet macaque with baby in Kerala The bonnet macaque are very social animals and they communicate in a different range of facial expressions The bonnet macaque like other macaques shares a linear dominance hierarchy the alpha male is the most dominant male of the troop followed by a beta male and a gamma male and so on according to their dominance Similarly females also follow this linear hierarchy The male and female hierarchies are different and of a non overlapping or non mixing types Males are usually dominant over females 14 In their social groups females tend to stay in the same group they were born in whereas males tend to disperse 7 The females dominance hierarchy is stable whilst the males dominance hierarchy is very dynamic In the male hierarchy males close in rank often fight to rise in rank A male has the best chance of obtaining a high rank in his prime age resulting in the greatest benefits to reproduction High ranking individuals have first access to breeding females Females are receptive during only a few months in a year resulting in competition between males In this situation the ranks established by aggressive encounters come into play Most of these aggressive encounters are easily resolved but competition between similarly built or similarly aggressive males results in brutal and sometimes fatal fights Female bonnet macaques attempt kidnappings of lower ranking females These are done mostly by mother females and the majority of the time they are not successful in completing it 15 Different males may employ various means to rise in rank Coalition formation between unrelated males to oust a more dominant male has been observed Males often move from troop to troop to gain a higher rank with the resulting benefits However males remaining in a single troop have been observed to rise to become dominant male of that troop An important note is male bonnet macaques are generally far more laid back and carefree in their social lives than many other macaque species Competition among male bonnet macaques is much more subdued and there is a much higher emphasis on pacifism Male bonnet macaques groom each other hug each other sleep near each other play together and engage in male male mounting as a social defuser While assertive males may take measures to monopolize matings they cannot control females and these females will mate promiscuously as macaques do Some mysterious environmental pressures must have driven the bonnet macaque to form an unusually egalitarian social structure Why this trend crops up convergently in separate macaque species rather than being an ancestral macaque trait is an enigma A possible driving force may be these pacifist species inhabit more fertile habitats with more abundant food Bonnet macaques are also strong swimmers 8 In the case of females the stable dominance hierarchy is a result of female philopatry when individuals tend to remain with the troop into which they are born This results in the formation of matrilinear groupings of closely related females 8 References Edit Skull and jawbone of a bonnet macaque Naturalis Biodiversity Center Wikimedia Commons has media related to Macaca radiata Wikispecies has information related to Bonnet macaque a b c d Singh M Kumara H N Kumar A 2020 Macaca radiata IUCN Red List of Threatened Species 2020 e T12558A17951596 doi 10 2305 IUCN UK 2020 2 RLTS T12558A17951596 en Retrieved 19 November 2021 Chambers English Dictionary 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 164 ISBN 0 801 88221 4 OCLC 62265494 Fooden Jack 1988 Taxonomy and evolution of the sinica group of macaques 6 Interspecific comparisons and synthesis Fieldiana Zoology New Series 45 1 44 doi 10 5962 bhl title 2841 Kumar R Radhakrishna S Sinha A 2011 Of Least Concern Range extension by rhesus macaques Macaca mulatta threatens long term survival of bonnet macaques M radiata in Peninsular India International Journal of Primatology 32 4 945 doi 10 1007 s10764 011 9514 y S2CID 35227050 Govindarajan Vinita South India is losing its endemic bonnet monkey to an aggressive invader from the north Scroll in Retrieved 2017 09 14 a b c d e Anandam M V 2013 Family Cercopithecidae Old World Monkeys In Mittermeier Russell A Rylands Anthony B Wilson Don E eds Handbook of the Mammals of the World Volume 3 Primates Barcelona Lynx Edicions pp 238 639 ISBN 978 84 96553 89 7 a b c d Brown M 2008 Macaca radiata Animal Diversity Web a b c d Posey Lauren 2022 Bonnet Macaque Reproduction amp Behavior Study com Retrieved 27 August 2022 Bonnet Macaque World Land Trust Retrieved 27 August 2022 Silk Joan B 1999 Why are infants so attractive to others The form and function of infant handling in bonnet macaques PDF Animal Behaviour 57 5 1021 1032 doi 10 1006 anbe 1998 1065 PMID 10328788 S2CID 1753907 Retrieved 27 August 2022 Coss Richard G McCowan Brenda Ramakrishnan Uma 2007 Threat related acoustical differences in alarm calls by wild bonnet macaques Macaca radiata elicited by python and leopard models PDF Ethology 113 4 352 doi 10 1111 j 1439 0310 2007 01336 x Friends help more promptly at least in monkeys ScienceDaily 2012 07 31 Retrieved 2013 04 25 Singh Mewa Jeyaraj Tephillah Prashanth U Kaumanns Werner 2010 Male male relationships in lion tailed macaques Macaca silenus and bonnet macaques Macaca radiata PDF International Journal of Primatology 32 167 176 doi 10 1007 s10764 010 9448 9 S2CID 18967639 Archived from the original PDF on 2014 10 14 Silk Joan B 1980 01 01 Kidnapping and female competition among captive bonnet macaques Primates 21 1 100 110 doi 10 1007 BF02383827 ISSN 1610 7365 S2CID 11983515 Retrieved from https en wikipedia org w index php title Bonnet macaque amp oldid 1136272974, 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