Monogamy and Paternal Care in Primates of Argentina and Ecuador

A comparative study of the behavior, ecology and genetics of three monogamous primates.

Formosa Province, Argentina and Tiputini Biodiversity Station in Ecuador

Eduardo Fernandez-Duque, University of Pennsylvania
Anthony Di Fiore, New York University

Additional Sponsors
Leakey Foundation
Wenner-Gren Foundation
National Geographic Society

Photo caption: An adult saki male (Pithecia aequatorialis) in Yasuni National Park, Ecuador.

Di Fiore and Fernandez-Duque enjoying a downpour after a day of work in the rainforest.Canopy walk in the forests of Tiputini Biodiversity Station.Sakis, titis, and owl monkeys, the three monogamous genera show some fascinating differences in their degree of physicalsexual dimorphism, the extent of affiliation between partners and in the amount of paternal care provided. Thus, they constitute an excellent group to evaluate alternative hypotheses for the evolution and maintenance of monogamy in primates and early humans. The Owl Monkey Project and the Comparative Socioecology of Monogamous Primates Project are providing invaluable data to examine those questions through field research in the Education Amazon and the Argentinean Chaco.


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(215) 898-4000


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