Abstract # 11:

Scheduled for Wednesday, June 19, 2013 11:15 AM-11:30 AM: (San Geronimo Ballroom B) Symposium


S. Evans1,2 and C. K. Wolovich1,3
1DuMond Conservancy for Primates and Tropical Forests, Inc, 14805 SW 216 St, Miami, Florida 33170, USA, 2Florida International University, 3MacMurray College

Owl monkeys (Aotus) are nocturnal, monogamous and the males are responsible for the majority of infant transport. Their reproduction is characterized by the shortest gestation of any anthropoid, relatively altricial infants and a unique method of transporting infants during the neonatal period. The pronounced paternal care shown by owl monkeys has been linked to paternity certainty and the positive effects on female reproductive costs. Observations of owl monkeys both in nature and housed outdoors in captivity at the DuMond Conservancy (n=35 A. nancymaae) reveal that they are active, agile insect foragers frequently leaping more than one meter to snatch flying insects. In captivity, adult females foraged for insects more frequently than did adult males (p = 0.004). Carrying infants may seriously impede the ability of owl monkeys to forage for insects and this would be particularly detrimental for lactating females. The likely reliance of owl monkeys on insects to meet the majority of their protein requirements may be important in understanding the significance of male parental care. Furthermore, New World monkeys that show pronounced alloparental care are typically approximately one kilogram or less, at or below the apparent threshold for supplementing frugivorous (or gumnivorous) diets with insects for protein. The importance of insectivory in the evolution of paternal and alloparental care in small bodied New World monkeys should be considered.