A global, accurate estimation of the Southern Gelada (Theropithecus gelada obscurus, Heuglin 1863) population is poorly available. This study aimed to investigate the population size and structure of the Southern Gelada in the Abune Yosef Zigit Community Conservation Area. Population counts were done at six counting blocks covering both the dry and wet seasons in 2021. The total mean population size of the Southern Gelada in Abune Yosef Zigit Community Conservation Area was 929 (±8.46). The population comprised 9% (82±0.92) adult males, 34% (314±3.47) adult females, 11% (99 ±1.23) sub-adult males, 10% (95±1.30) sub-adult females, 24% (128±1.92) juveniles, and 13% (121±1.73) infants. However, all age groups of Southern Gelada showed insignificant seasonal variation in abundance, except for infants (P = 0.027). The mean age and sex ratio of males to females (
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Abate, D., and Girma, Z. (2023). Population structure and distribution of geladas (Theropithicus gelada, Ruppell 1835) in Kotu forest, Northern Ethiopia. Ecology and Evolution 13(6): e10206. https://doi.org/10.1002/ece3.10206.
Abie, K., and Bekele, A. (2017). Population estimate, group size and age structure of the gelada baboon (Theropithecus gelada) around Debre-Libanos, Northwest Shewa Zone, Ethiopia. Global Journal of Science Frontier Research 17(1): 27–33.
ACTPO (Amhara regional state cultural, tourism and parks development office). (2014). Legal recognition documents of Abune Yosef Zigit and Abuhay-Gara Mountains community conservation area. Directive Documents.
Amare, A. (2015). Wildlife resources of Ethiopia: Opportunities, challenges and future directions: From ecotourism perspective: A review paper. Natural Resources 6(06): 405. http://www.scirp.org/journal/nr.
Amera, M. (2019). Population status, diets, activity budget and range use by arsi gelada (Theropithecus gelada arsi) in Eastern Arsi, Ethiopia. PhD Dissertation. Addis Ababa University, Ethiopia. 190 pp.
Ankel-Simons, F. (2007). Primate Anatomy: an introduction, 3rd edition. San Diego: Elsevier Academy.
Ayalew, Y. (2009). Population status, distribution and ecology of gelada baboon (Theropithecus gelada) in Azwa and Arego, South Wollo, Dessie, Ethiopia. M.Sc. Thesis. Addis Ababa University, Addis Ababa, Ethiopia: 65.
AZACCA. (2018). Abune Yosef, Zigit, Abuhay Gara community conservation area office. Supported by, Frankfurt zoological society. Lalibela, Directive Documents.
Balakrishnan, M. and Moges, E. (2015). Demographic structures of Gelada (Theropithecus gelada) in Guassa Community Protected Area, Ethiopia. Biological Science 15: 18–24.
Beehner, J.C., Gebre, B., Bergman, T.J. and McCann, C. (2007). Population estimate for geladas (Theropithecus gelada) living in Simien Mountains National Park, Ethiopia. Ethiopian Journal of Science 30(2): 149–154.
Bekele, A. and Yalden, D.W. (2013). The mammals of Ethiopia and Eritrea. Addis Ababa University Press, Addis Ababa, Ethiopia.
Bergman, T.J. and Beehner, J.C. (2013). Theropithecus gelada (gelada baboon). Mammals of Africa 2: 240–244.
Beyene, H. (2010). Population estimate and structure of the Gelada, Theropithecus gelada, in the Guassa community conservation area, central Ethiopia. Doctoral dissertation. Addis Ababa University, Addis Ababa, Ethiopia: 61 pp.
Ethiopian Biodiversity Institute (EBI). (2014). Ethiopia’s Fifth National Report to the Convention on Biological Diversity, EBI, Addis Ababa, Ethiopia.
Fashing, P.J. and Nguyen, N. (2016). Theropithecus gelada. In: Rowe, N. and Myers, M. (eds), All the World’s Primates. Pogonias Press, Charleston, RI, USA: pp. 447–449. https://doi.org/10.2305/IUCN.UK.2019–3.RLTS.T21744A17941908.en.
Fashing, P.J., Mulindahabi, F., Gakima, J.B., Masozera, M., Mununura, I., Plumptre, A.J. and Nguyen, N. (2007). Activity and ranging patterns of Colobus angolensis ruwenzorii in Nyungwe Forest, Rwanda: possible costs of large group size. International Journal of Primatology 28(3): 529–550.
Filipcik, R., Máchal, L., Baholet, D., Chládek, G., Hošek, M., and Paldusová, M. 2014. The daily pattern of main activities in the gelada baboon (Theropithecus gelada). Act Universities Agriculture ET Silviculturae Mendelianae Brunensis 62(5): 891–896. https://doi.org/10.11118/actaun201462050891.
Friis, I., Demissew, S. and van Paulo, B. (2011). Atlas of the potential vegetation of Ethiopia. Addis Ababa, Ethiopia. Edinburgh Journal of Botany, 69 (1): 207–209.
Gebrehiwot, K., Desalegn, T., Woldu, Z., Demissew, S. and Teferi, E. (2018). Soil organic carbon stock in Abune Yosef afro- alpine and sub-afro-alpine vegetation, northern Ethiopia. Ecological processes 7(1): 1–9.
Gippoliti, S. (2010). Theropithecus gelada distribution and variations related to taxonomy: history, challenges and implications for conservation. Primate 51(4): 291–297. https://doi.org/10.1007/s10329-010-0202-x.
Gippoliti, S., Mekonnen, A., Burke, R., Nguyen, N. and Fashing, P.J. (2020). Theropithecus gelada. The IUCN red list of threatened species 2019.
Girma, Z. (2016). Habitat use, diet and conservation of the mountain Nyala and Menelik’s Bushbuck in Arsi Mountains National Park, Ethiopia. Doctoral dissertation, University of Buea, Buea, Cameroon: 218.
Girmay, T., and Dati, D. (2020). Population size, group and age structure of geladas (Theropithecus gelada) in escarpments of Eastern Tigray, Ethiopia: implication for conservation. Journal of Ecology and Environment 44(1): 1–7. https://doi.org/10.1186/s41610-020-00163-w.
Girmay, T., and Tesfay, H. (2021). The new geographical range of geladas (Theropithecus gelada) in Tigray Region, Northern Ethiopia. African Journal of Ecology 59(1): 277–280. https://doi.org/10.1111/aje.12818.
Goshme, B., and Yihune, M. (2018). Population structure and habitat use of gelada baboon (Theropithecus gelada) in Wof- Washa Forest (Gosh-Meda Area), Central Ethiopia. Journal of Ecology and Environment, 42(1): 1–6. https://doi.org/10.1186/s41610-018-0098-8.
Kifle, Z. (2018). A comparative study on the behavioural ecology and conservation of the southern gelada (Theropithecus gelada obscurus) in and around Borena Sayint National Park, Ethiopia. PhD Dissertation. Addis Ababa University, Ethiopia: 225 pp.
Kifle, Z., Belay, G. and Bekele, A. (2013). Population size, group composition and behavioral ecology of geladas and human- gelada conflict in Wonchit Valley, Ethiopia. Pak Journal of Biological Science 16 (21): 1248–1259. https://doi.org/10.3923/pjbs.2013.1248.1259.
Lepage, D. (2006). Avibase. Bird checklists of the world. Birdlife International. Available at: http://www.bsceoc.org/avibase.
Majolo, B., de Bortoli Vizioli, A. and Schino, G. (2008). Costs and benefits of group living in primates: group size effects on behaviour and demography. Animal Behaviour 76(4): 1235–1247. https://doi.org/10.1016/j.anbehav.2008.06.008.
Moges, E. (2015). Population structure, behavioral ecology and habitat vulnerability of Gelada (Theropithecus gelada) in Guassa Community Protected Area, Central Ethiopia. Doctoral dissertation, Addis Ababa University, Ethiopia: 169 pp. Available at: http://thesisbank.jhia.ac.ke/id/eprint/6299.
Mori, A., Iwamoto, T., Mori, U. and Bekele, A. (1999). Sociological and demographic characteristics of a recently found Arsi gelada population in Ethiopia. Primates 40(2): 365–381.
Page, S.L. and Goodman, M. (2001). Catarrhine phylogeny: noncoding DNA evidence for a diphyletic origin of the mangabeys and a human-chimpanzee clade. Molecular Phylogenetic and Evolution 18(1): 14–25. https://doi.org/10.1006/mpev.2000.0895.
Saavedra, D. (2009). The Abune Yosef massif: birds and mammals of a hidden jewel of Ethiopia. Centre de Recursos de Biodiversitat Animal 2: 131.
Shotake, T., Saijuntha, W., Agatsuma, T. and Kawamoto, Y. (2016). Genetic diversity within and among gelada (Theropithecus gelada) populations based on mitochondrial DNA analysis. Anthropological Science 124: 157–167. https://doi.org/10.1537/ase.160717.
Sutherland, W.J. (2006). Ecological Census Technique. A Handbook. 3rd ed. Cambridge University Press, Cambridge.
Teressa, H., Minale, H., Birie, S. and Alemayehu, Y. (2021). Marginalized groups of gelada (Theropithecus gelada) living in and around the highly disturbed mount Guna Community Conservation Area, Northwest Ethiopia. International Journal of Ecology 2021: 6673622. https://doi.org/10.1155/2021/6673622.
Yazezew, D., Mamo, Y. and Bekele, A. (2011). Population Ecology of Menelik’s Bushbuck (Tragelaphus scriptus meneliki, Neumann 1902) from Denkoro Forest Proposed National Park, Northern Ethiopia. International Journal of Ecology and Environmental Sciences 37(1): 1–13.
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A global, accurate estimation of the Southern Gelada (Theropithecus gelada obscurus, Heuglin 1863) population is poorly available. This study aimed to investigate the population size and structure of the Southern Gelada in the Abune Yosef Zigit Community Conservation Area. Population counts were done at six counting blocks covering both the dry and wet seasons in 2021. The total mean population size of the Southern Gelada in Abune Yosef Zigit Community Conservation Area was 929 (±8.46). The population comprised 9% (82±0.92) adult males, 34% (314±3.47) adult females, 11% (99 ±1.23) sub-adult males, 10% (95±1.30) sub-adult females, 24% (128±1.92) juveniles, and 13% (121±1.73) infants. However, all age groups of Southern Gelada showed insignificant seasonal variation in abundance, except for infants (P = 0.027). The mean age and sex ratio of males to females (
All Time | Past 365 days | Past 30 Days | |
---|---|---|---|
Abstract Views | 161 | 161 | 25 |
Full Text Views | 1 | 1 | 1 |
PDF Views & Downloads | 66 | 66 | 3 |