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Infant-nonmother interactions of free-ranging mantled howlers (Alouatta palliata) in Costa Rica

dc.contributor.author Clarke, MR
dc.contributor.author Glander, KE
dc.contributor.author Zucker, EL
dc.date.accessioned 2013-03-21T19:38:31Z
dc.date.issued 1998-01-01
dc.identifier.issn 0164-0291
dc.identifier.uri https://hdl.handle.net/10161/6416
dc.description.abstract Proximate and ultimate explanations of interactions between infants and nonmothers vary depending upon the relatedness of the interactors. We investigated interactions of infants and nonmothers from a 22-month continuous study and from the long-term monitoring of the mantled howler population of La Pacifica, Guanacaste Province, Costa Rica. Relatedness is low or absent in these mantled howler groups. Juvenile females appeared to practice care skills with older infants, but as most first infants died, they failed to benefit. Infant positive interactions with adults occurred with the mother and probable father. Other adult females behaved aggressively toward the youngest infants. Mothers were retentive of infants and responded negatively to these interactions, suggesting that they perceived them as threatening. Interactions with infants appear to reflect competition in groups of unrelated adults. A review of other populations of Alouatta palliata and other species of howlers indicate variability in social group size and suggest variability in intragroup relatedness. We suggest that further study will confirm that social behavior (including interactions with infants) will vary by resource availability (group size) and associated demographic patterns (male and female migration) that affect relatedness in howler social groups.
dc.publisher Springer Science and Business Media LLC
dc.relation.ispartof International Journal of Primatology
dc.title Infant-nonmother interactions of free-ranging mantled howlers (Alouatta palliata) in Costa Rica
dc.type Journal article
duke.contributor.id Glander, KE|0114425
pubs.begin-page 451
pubs.end-page 472
pubs.issue 3
pubs.organisational-group Duke
pubs.organisational-group Evolutionary Anthropology
pubs.organisational-group Trinity College of Arts & Sciences
pubs.publication-status Published
pubs.volume 19
duke.contributor.orcid Glander, KE|0000-0001-9563-4660


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