Abstract # 3161 Event # 12:

Scheduled for Saturday, September 17, 2011 10:15 AM-10:30 AM: Session 3 (Salon F (Sixth Floor)) Oral Presentation


MATRILINEAL RANK, LONGEVITY, AND REPRODUCTIVE OUTCOMES OF FEMALE RHESUS MONKEYS (MACACA MULATTA)

E. L. Zucker1, C. M. Escabi Ruiz2, J. Alvarado Diaz2, E. Maldonado2 and J. Gonzalez-Martinez2
1Loyola University New Orleans, Department of Psychological Sciences, New Orleans, LA 70118, USA, 2Caribbean Primate Research Center, University of Puerto Rico
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     Social status can mediate reproductive physiology, reproductive outcomes, and perhaps, also longevity, enabling potentially greater lifetime reproductive success. Differences in longevity and reproductive outcomes, based on matrilineal rank, were assessed for Group M female rhesus monkeys at the Sabana Seca Field Station (Caribbean Primate Research Center). Matrilineal ranks were determined by agonistic outcomes (all occurrences sampling) and historical information. Longevity and reproductive outcomes (470 births and 240 non-adult deaths) of 87 deceased adult female relatives of current group females were determined from colony records (1975 - present). Members of the highest-ranking matriline were expected to live longer and produce more surviving offspring than members of the other three matrilines. While the top-ranking matriline had the greatest mean longevity, it did not differ significantly from other matrilines. Matrilines differed significantly in number of infants produced per female reproductive year (ANOVA; p =.023), infants surviving to one year (ANOVA; p = .008), and infants surviving to adulthood (ANOVA; p = .003), with the top-ranking matriline having better reproductive outcomes in all categories. However, the top-ranking matriline had more perinatal deaths than expected (chi-square; p < .05); infant mortality in the first year or between one year and adulthood did not differ across matrilines. Thus, despite higher than expected perinatal mortality, high matrilineal rank resulted in better reproductive outcomes not attributable to longevity differences.