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Dispersal patterns in Costa Rican mantled howling monkeys

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Date
1992-08-01
Author
Glander, KE
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Abstract
Both male and female juveniles disperse in Costa Rican mantled howling monkeys (Alouatta palliata). 79% of the males and 96% of the females leave their natal groups. Males may spend up to 4 years and females up to 1 year as solitaries. Extra-group individuals are faced with only three possibilities, i.e., form a new group by joining another extra-group individual, join an established social group, or remain solitary. Most surviving extra-group individuals join an established social group which contains no kin. Females join with the help of a resident male and once in a group proceed to rise to the alpha position through dyadic interactions. The immigrant female either becomes the alpha female or leaves and tries again in another group. Males challenge the alpha male and either defeat him or remain solitary. Competition with relatives for limited high quality food may be the reason for both sexes leaving their natal groups in howlers. By leaving, the successful immigrants increase their mothers inclusive fitness while suppressing the fitness of nonrelatives instead of remaining natal and competing with relatives for limited food. © 1992 Plenum Publishing Corporation.
Type
Journal article
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https://hdl.handle.net/10161/6402
Published Version (Please cite this version)
10.1007/BF02547826
Publication Info
Glander, KE (1992). Dispersal patterns in Costa Rican mantled howling monkeys. International Journal of Primatology, 13(4). pp. 415-436. 10.1007/BF02547826. Retrieved from https://hdl.handle.net/10161/6402.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
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Scholars@Duke

Glander

Kenneth Earl Glander

Professor Emeritus of Evolutionary Anthropology
Primate ecology and social organization: the interaction between feeding patterns and social structure; evolutionary development of optimal group size and composition; factors affecting short and long-term demographic changes in stable groups; primate use of regenerating forests.
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