Abstract # 2:

Scheduled for Wednesday, June 19, 2013 08:15 AM-08:30 AM: (San Geronimo Ballroom B) Symposium


MARMOSETS & TAMARINS: MONOGAMOUS OR JUST TERRITORIAL?

S. D. Tardif and C. N. Ross
Barshop Institute for Longevity & Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX 78245, USA
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     A mating pattern of one female and one male (monogamy) in callitrichid primates could be the result of an exclusive affiliative and sexual relationship. Another, not mutually exclusive, explanation for a monogamous pattern is a strong territorial defense by each sex towards same-sex individuals. Experimental manipulations used in a captive setting to try to delineate the extent to which an exclusive affiliation (a “pair-bond”) occurs in callitrichid primates include separation and intruder studies, modeled after the classic studies performed by Mason and Mendoza in titi monkeys and squirrel monkeys. A review of intruder and separation studies in callitrichid primates reveals the following: (1) the responses to intruders vary significantly among studies and at least some of this variation reflects species differences; (2) the responses to intruders of the opposite sex are equivocal in terms of providing support for the concept of a “pair-bond”; (3) the responses to intruders of the same sex are generally supportive of the concept of a strong territorial drive against individuals of the same sex; (4) the presence of stimuli from a mate in separation studies does appear to ameliorate the stress of separation from a home environment; however, the critical studies to determine whether this amelioration is tied uniquely to the mate – as opposed to other, socially familiar group members - have not been reported.