NDLI: New evidence from observations of progressions of mandrills (Mandrillus sphinx): a multilevel or non-nested society?

Content Provider	Springer Nature Link
Author	Hongo, Shun
Copyright Year	2014
Abstract	African papionins are well known for the diversity of their social systems, ranging from multilevel societies based on one-male-multifemale units (OMUs) to non-nested societies. However, the characteristics of Mandrillus societies are still unclear due to difficult observational conditions in the dense forests of central Africa. To elucidate the characteristics of mandrill societies and their social systems, I analysed the age–sex compositions, behaviours, and progression patterns of their horde/subgroups using videos of them crossing open places. The progressions were very cohesive, and the very large aggregations (169–442 individuals) had only 3–6 adult males (1.4–1.8 % of all individuals) and 11–32 subadult males (6.5–7.2 %). No herding behaviours were observed in the males, and most of the small clusters within the progressions were not analogous to the OMUs of a multilevel society but instead consisted of only adult females and immatures. The progressions of alert mandrills showed patterns similar to those observed in a non-nested social system: females with dependent infants were concentrated toward the rear and adult and subadult males toward the front. These results suggest that cohesive aggregations and a female-biased sex ratio are common characteristics of mandrill species. Mandrills may form female-bonded and non-nested societies, although their fission–fusion dynamics may be different from those typical of savannah baboons.
Starting Page	473
Ending Page	481
Page Count	9
File Format	PDF
ISSN	00328332
Journal	Primates
Volume Number	55
Issue Number	4
e-ISSN	16107365
Language	English
Publisher	Springer Japan
Publisher Date	2014-08-05
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mandrill Social system Age–sex composition Progression Moukalaba-Doudou Zoology Animal Ecology Behavioural Sciences Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology

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