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ISSN : 2287-8327

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Vol.43 No.2
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Variability in group size and daily activity budget of family groups of the gelada baboon (Theropithecus gelada) at Guassa Community Conservation Area, Central Ethiopia

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2019, v.43 no.2, pp.263-270
https://doi.org/10.1186/s41610-019-0124-5
Mandefero Mamo (Addis Ababa University)
Tilaye Wube (Addis Ababa University)
Mandefero, M. , & Tilaye, W. (2019). Variability in group size and daily activity budget of family groups of the gelada baboon (Theropithecus gelada) at Guassa Community Conservation Area, Central Ethiopia. Journal of Ecology and Environment, 43(2), 263-270, https://doi.org/10.1186/s41610-019-0124-5
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Abstract

Background: The gelada baboon, Theropithecus gelada Ruppell, 1835, is an endemic primate of the central and western highlands of Ethiopia occurring between altitudes of 1800–4400 m. Variability in activity time budget between the two gelada social units, i.e., one-male units (OMUs) and all-male units (AMUs), has not been studied previously. Thus, the present study was an effort to understand intra- and inter-variations in group size and daily activity time budget in gelada baboon OMUs and AMUs at Guassa Community Conservation Area, Central Ethiopia. The instantaneous sampling method was used in the data collection. Results: Both OMU and AMU groups allocated more time for feeding (OMUs = 36.96%; AMUs = 35%) followed by moving (OMU = 25.8%; AMUs = 27%). Grooming was the most frequent social activity in both family groups (OMUs= 8.56%; AMUs = 11.81%). OMUs and AMUs did not show significant variation between themselves in the timebudget and temporal distribution of their daily activities. However, the overall variation in the time budget allocated for daily activities within OMUs and AMUs was statistically significant (p < 0.05%). The different age and sex groups in OMUs (i.e., immature, sub-adult females, subordinate males, adult females, and alpha males) showed statistically significant variation in their time budget allocation for the daily activities (p < 0.05) except for feedingand moving. Alpha males had the highest proportion of resting (32.14%) and aggression (31.92%). Immature individuals were responsible for > 90% of the time budget recorded for playing while adult females showed the highest frequency of grooming. Group size of OMUs ranged between 5 and 15 individuals (mean ± SD = 11.25 ±1.95). Adult females comprised the highest number within OMUs (mean = 4.5) followed by immature individuals(mean = 3). The group size of AMUs ranged from 4 to 8 (mean ± SD = 6.6 ± 1.5). Conclusion: Our results showed that the gelada baboon spent less time on foraging compared to previous studies at the Simien Mountains and Debre-Libanos area. We suggested this variation could be explained based on higher forage quality at Guassa Community Conservation Area resulting from better conservation of the habitat.

keywords
Afro-alpine, AMU, Central Ethiopia, Gelada baboons, OMU, Social behavior, Social units

Reference

1.

Abie K, Bekele A, Mekonen A. Daily activity, feeding ecology and habitat association of gelada baboon (Theropithecus gelada) around Debre-Libanos, Northwest Shewa Zone, Ethiopia. Internat J Biodivers Conserv. 2017;9(6):232–8.

2.

Altmann J. Observational study of behavior: sampling method. Behavior. 1974;49: 227–67.

3.

Andarge E. Human wildlife conflict involving Ethiopian Wolf (Canis simensis) and Gelada baboons (Theropithecus gelada) in and around Guassa Community Conservation Area. Addis Ababa: M.Sc. Thesis, Addis Ababa University; 2010.

4.

Bronson FH. Energy balance and ovulation: small cages versus natural habitats. Reprod Fertil Dev. 1998;10(2):127–38.

5.

Dunbar RIM. Determinants and evolutionary consequences of dominance among female gelada baboons. Behav EcolSociobiol. 1980;7(4):253–65.

6.

Dunbar RIM. Structure of gelada baboon reproductive units. Ethol Internat J Behavior Ecol. 1983;63(4):265–82.

7.

Dunbar RIM. Functional significance of social grooming in primates. Folia Primatol. 1991;57:121–31.

8.

Dunbar RIM, Dunbar P. Dominance and reproductive success among female gelada baboons. Nature. 1977;266:351–2.

9.

Dunbar RIM, Dunbar P. Maternal time budgets of gelada baboons. Anim Behav. 1988;36(4):970–80.

10.

Filipcik R, Machal L, Baholet D, Chladek G, Hosek M, Paldusova M. The daily pattern of main activities in the gelada baboon (Theropithecus gelada). Acta. 2014;62:891–6.

11.

Gippoliti S, Hunter C. Theropithecus gelada. The IUCN Red List of threatened Species 2008: https://doi.org/10.2305/IUCN.UK.2008.RLTS.T21744A9316114.en. Accessed 28 Apr 2018.

12.

Gron KJ. Primate Factsheets: Gelada baboon (Theropithecus gelada) taxonomy, morphology, & ecology. 2008. http://pin.primate.wisc.edu/factsheets/entry/gelada_baboon. Accessed 16 May 2018.

13.

Iwamoto T, Dunbar R. Thermoregulation, habitat quality and the behavioral ecology of gelada baboons. J Anim Ecol. 1983;52:357–66.

14.

Kawai M, Dunbar RIM, Ohsawa H, Mori U. Social organization of gelada baboons: social units and definitions. Primates. 1983;24(1):13–24.

15.

Lehmann J, Korstjens AH, Dunbar RIM. Group size and social cohesion in primates. Anim Bhav. 2007;74(6):1617–29.

16.

Mancini G, Palagi E. Play and social dynamics in a captive herd of gelada baboons (Theropithecus gelada). Behav Processes. 2009;82(3):286–92.

17.

Palagi E, Leone A, Mancini G, Ferrari P. Contagious yawning in gelada baboons as a possible expression of empathy. Proc Nati Acad Sci USA. 2009;106(46): 19262–7.

18.

Roux AL, Beehner JC, Bergman TJ. Female philopatry and dominance patterns in wild geladas. Am J Primatol. 2011;73:422–30.

19.

Snyder-Mackler N, Beehner JC, Bergman TJ. Defining higher levels in the multilevel societies of Gelada (Theropithecus gelada). Int J Primatol. 2012; 33(5):1054–68.

20.

Tefera Z. Common property resource management of Afro-alpine habitat supporting a population of a critically endangered Ethiopian Wolf (Cannis simensis), PhD. Thesis, Durrel, Institute of Conservation and Ecology, University of Kent, Canterbury; 2001.

21.

Tefera Z. Community management of Afro alpine highlands Ethiopia. LEISA Magazine. Addis Ababa; 2005.

22.

Tefera Z, Leader-Williams N. Behaviour and ecology of the Ethiopian wolf (Canis simensis) in human-dominated landscape outside protected areas. Anim Conserv. 2005;8:113–21.

23.

Vaughan TA, Ryan JM, Czaplewski NJ. Mammalogy. 4th ed. United States of America: Thomson Learning Inc; 2000.

24.

Walker EP. Mammals of the World. 3rd ed. Volume I. Baltimore and London: The Johns Hopkins University Press; 1975.

25.

Woldegeorgis C, Bekele A. Activity budget and behavioral patterns of gelada (Mammalia: Primates: Cercopithecidae) on the Gich Plateau of the Simien Mountains National Park, Ethiopia. JoTT. 2015;7(8):7409–15.

26.

Yalden DW, Largen MJ, Kock D. Catalogue of the mammals of Ethiopia. Monitore Zoologico Italiano (NS) Suppl. 1977;9:1–52.

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