The 81st Annual Meeting of the American Association of Physical Anthropologists (2012)

Paternal infanticide in the socially monogamous Bolivian gray titi monkey, Callicebus donacophilus


1Anthropology, Indiana University, Bloomington, 2Oral Biology, UIC College of Denistry

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A paternal infanticide was observed in a group of unprovisioned Bolivian gray titi monkeys, Callicebus donacophilus in Santa Cruz, Bolivia. An approximately 3 week old male infant was killed by a conspecific male. Both the mother and subadult male in the group tried, without success, to protect the infant. While risk of infanticide has been promoted as a key factor for the evolution and maintenance of monogamous social systems, there has been little direct evidence. This is the first observed case of paternal infanticide in the genus Callicebus. A genus recognized as being among the most socially monogamous of all primate species. Various reasons why infanticide is expected in this genus are discussed.

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