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A large African monkey (Theropithecus gelada) of Ethiopia that resembles a baboon but has a bright patch of naked red skin on the chest and a large broad mane covering the shoulders. The gelada has an opposable thumb that it uses to gather grass seeds to eat. Also called gelada baboon.

[Amharic č̣əllada.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈdʒɛlədə; ˈɡɛl-; dʒɪˈlɑːdə; ɡɪ-)
(Animals) a NE African baboon, Theropithecus gelada, with dark brown hair forming a mane over the shoulders, a bare red chest, and a ridged muzzle: family Cercopithecidae. Also called: gelada baboon
[probably from Arabic qilādah mane]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Previous research reported that the responses were unrelated to sex, but immatures showed more object exploration than adults in wild chacma baboons (Papio ursinus) and geladas (Theropithecus gelada) [24].
Elemental ratios of carbon and nitrogen track weaning in a graminivorous primate (Theropithecus gelada).
Patterns of Reconciliation Among Captive Gelada Baboons (Theropithecus gelada): A Brief Report.
It is also noteworthy the presence at Cueva Victoria of the large cercopithecid Theropithecus (Gibert et al., 1995).
For the study, Thore Bergman, an assistant professor of psychology and ecology and evolutionary biology at the University of Michigan, looked at individual recognition in male geladas (Theropithecus gelada, close relatives of baboons) that live in fluid, multilevel groups that can number more than 1,200 individuals - 10 times larger than baboon groups.
To test this hypothesis, dental microwear was observed in 15 individuals from Gorilla gorilla (n = 3), Pan troglodytes (n = 2), Theropithecus gelada (n = 1), Papio cynocephalus (n= 2), Papio anubis (n = 2), Papio ursinus (n = 2), Cebus apella (n =2) and Pongo pygmaeus (n = 1) using low-magnification stereomicroscopy with an external and moveable light source.
Similarly, PTLV-3s exhibit broad diversity among NHPs in the wild; currently, 3 subtypes have been suggested according to the geographic origin of the strains (17): East African STLV-3 subtype A includes STLV-3 (PH969) found in a baboon (Papio hamadryas) from Eritrea (18) and from captive gelada baboons (Theropithecus gelada) (19); West and Central African STLV-3 subtype B includes STLV-3 (CTO-604) and STLV-3 (CTO-602) found among mangabeys (Cercocebus torquatus) from Cameroon (20) and STLV-3 (PPAF3) from baboons (P.
Dental microwear and diet in extant and extinct Theropithecus: Preliminary analyses.
No entanto, este comportamento foi observado em esquilos (Owings & Coss, 1977) e em algumas especies de primatas, como: babuinos gelada (Theropithecus gelada; Iwamoto, Mori, Kawai & Bekele, 1996), sagui-geoffroy (Callithrix geoffroyi; Passamani, 1995), Hanuman langur (Semnopithecus entellus; Srivastava, 1991) e sagui-de-cara-suja (Saguinus fuscicollis nigrifons; Bartecki & Heymann, 1987).