Articles | Volume 8, issue 2
https://doi.org/10.5194/pb-8-43-2021
https://doi.org/10.5194/pb-8-43-2021
Short communication
 | 
18 Nov 2021
Short communication |  | 18 Nov 2021

Masturbation in a male Phayre's langur, Trachypithecus phayrei

Md Shalauddin, Md Jayedul Islam, and Tanvir Ahmed

Cited articles

Ahmed, T., Hasan, S., Nath, S., and Biswas, S.: Population Status of Phayre's Langur in Northeastern Forests of Bangladesh, in: 7th Asian Primate Symposium-2020 and 1st International Conference on Human-Primate Interface, GUIST, Gauhati University, 8–10 February 2020, Gawahati, Assam, India, 2020. 
Baker, R. R. and Bellis, M. A.: Human sperm competition: Ejaculate adjustment by males and the function of masturbation, Anim. Behav., 46, 861–885, https://doi.org/10.1006/anbe.1993.1271, 1993.  
Bernstein, I. S.: The Lutong of Kuala Selangor, Behaviour, 32, 1–16, 1968. 
Chetry, D. and Ahmed, T.: Trachypithecus phayrei. The IUCN Red List of Threatened Species 2021: e.T175862145A175862149, https://doi.org/10.2305/IUCN.UK.2021-2.RLTS.T175862145A175862149.en, 2021. 
Hendershott, R., Rawson, B., and Behie, A.: Home range size and habitat use by Cat Ba Langurs (Trachypithecus poliocephalus) in a disturbed and fragmented habitat, Int. J. Primatol., 39, 547–566, https://doi.org/10.1007/s10764-018-0051-9, 2018. 
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Short summary
We report the first masturbatory behaviour in a male Phayre's langur, in a semi-evergreen forest in Bangladesh. We discuss possible reasons for masturbation and suggest an adequate characterization of the socio-sexual behaviour and reproductive strategies of this globally endangered primate to demonstrate the causes, cost and consequences of masturbation. We also urge further scientific exploration into masturbation among primates due to its evolutionary and conservation significance.
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