Abstract # 4492 Event # 6:

Scheduled for Wednesday, June 19, 2013 09:30 AM-09:45 AM: (San Geronimo Ballroom B) Symposium


PROXIMATE MECHANISMS OF SOCIAL BONDING WITH MATES AND INFANTS IN THE COOPERATIVE BREEDING MALE COMMON MARMOSET, CALLITHRIX JACCHUS

T. E. Ziegler
Wisconsin National Primate Research Center, 1220 Capitol Court, University of Wisconsin-Madison, Madison, Wisconsin 53715, USA
line
     The common marmoset, Callithrix jacchus, is known to be a cooperative breeding species from both laboratory and field studies. The male readily forms social bonds with both his mate and infants. In most cases males defend the pair bond and ensure reproductive success by assisting in the rearing of their offspring. Field studies have primarily demonstrated social monogamy but occasionally have demonstrated polyandry in groups. Our laboratory studies have examined the proximate mechanisms of sensory cues in social bonding within families. Males can detect the chemical signals of ovulation and respond with elevated circulating testosterone. However, ovulatory signals from unfamiliar females produce variable responses, depending upon a male’s social attachment to his family. Male marmosets also show social bonding with their infants. Olfactory cues from a male’s infant produce hormonal responses in fathers but only from related infants. However, parentally experienced males are equally responsive to unfamiliar, unrelated infant cries as to their own infants. These data indicate that common marmoset males are capable of establishing strong social bonds with their mate and offsprings; as is consistent with social monogamy. However, male marmosets do not reject unknown infants and are very tolerant to unrelated infants. Supported by NIH (HD057684),(MH070423) and NCRR (000167) to WNPRC.