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Author Shotake, Takayoshi ♦ Saijuntha, Weerachai ♦ Agatsuma, Takeshi ♦ Kawamoto, Yoshi
Source J-STAGE
Content type Text
Publisher The Anthropological Society of Nippon
Language English
Subject Keyword mitochondrial DNA ♦ third subspecies ♦ Rift Valley ♦ Blue Nile river ♦ Takazze river
Abstract We studied genetic characteristics within and among gelada (Theropithecus gelada) populations inhabiting the southern and northern plateaus of Ethiopia. Twenty-one mtDNA haplotypes were identified. Geladas on the southern plateau were genetically separated from those on the northern plateau, with a large differentiation as indicated by $F_{st}$ values of 0.665–0.917. The difference between the subspecies (T. g. gelada and T. g. obscurus) on the northern plateau highlighted a substantial genetic variation. Divergence times were estimated as ~250000 years between subspecies on the northern plateau and ~400000 years between those on the northern and southern plateaus. The genetic differentiation between the geographically distant Simien Mountain and Arsi groups (640 km) was ~2/3 of that between the geographically closer Debra Libanos and Arsi groups (250 km). The difference between subspecies within the northern plateau was similar to that between Papio hamadryas hamadryas and P. h. anubis. The difference between geladas in the north and south was similar to inter-subspecies differences in other mammals, and thus suggested that the Arsi geladas belong to subspecies T. g. arsi (tentative name). Considering the present distribution, geladas appear to have a complicated history of speciation. However, further analyses based on genetics, morphology and ecology are required to confirm these findings.
ISSN 09187960
Learning Resource Type Article
Publisher Date 2016-01-01
e-ISSN 13488570
Journal Anthropological Science(ase)
Volume Number 124
Issue Number 3
Page Count 11
Starting Page 157
Ending Page 167


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