Abstract # 2660 Poster # 162:

Scheduled for Sunday, September 20, 2009 06:30 PM-09:00 PM: Session 14 (Mission Bay Ballroom CDE) Poster Presentation


GENETIC STRUCTURE OF A POPULATION OF PHAYRE’S LEAF MONKEYS IN PHU KHIEO WILDLIFE SANCTUARY, THAILAND

E. Larney1,2, C. Borries3 and A. Koenig3
1Interdepartmental Doctoral Program in Anthropological Sciences, Stony Brook University, Stony Brook, NY 11794-4364, USA, 2Molecular Anthropology Laboratory, New York University, NY 10003-6790, 3Department of Anthropology, Stony Brook University, NY 11794-4364
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Dispersal patterns, social structure, and individual reproductive success are considered predictive of genetic population substructure. While frequent dispersal often leads to lower average relatedness in the dispersing sex, non-random dispersal may result in kin associations through immigration into the same group. We describe the genetic composition of a population of Phayre’s leaf monkeys (Trachypithecus phayrei) in Phu Khieo Wildlife Sanctuary, Thailand. From behavioral observations (2000-2008, 232 group-months), we have documented frequent female emigrations and immigrations, while new males never immigrated. Thus, we expected males to be more related than females within groups and females to be more related than males between groups. To asses the genetic structure, fecal samples were collected and genetic relationships were established for 149 individuals [four neighboring groups: 102, other groups: 47] using microsatellite genotyping at >13 polymorphic markers. Relatedness was derived for the population using the programs RELATEDNESS, Kinship and CERVUS and individuals were considered related at R>0.125. Results show that groups consisted of related males, but unrelated males were also present. Groups contained both related and unrelated females. Overall average within-group relatedness was low [R=0.02+0.01], but neighboring groups showed even less genetic similarity. Still, related males and females resided in neighboring groups. Thus, it appears that the dispersal pattern per se, does not reflect genetic substructure in Phayre’s leaf monkeys. Research supported by ASP, NSF, and Wenner-Gren.