Abstract # 2568 Poster # 146:

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


C. Yan1, J. Yang2, B. Li3 and P. Garber1
1Anthropology Department, University of Illinois, 109 Davenport Hall, 607 S. Matthews Ave., Urbana, IL 61801, USA, 2Institute of Zoology, Chinese Academy of Sciences, 3College of Life Sciences, Northwest University, China

Sichuan Snub-nosed Monkeys (Rhinopithecus roxellana) are reported to exhibit a multilevel social system composed of over 100 members, in which individuals form one-male-units (OMUs, which include one adult male, several adult females and their offspring), all male units, and bands (several OMUs that travel, feed and rest together). Behavioral observations indicate that R. roxellana males leave their natal units at the age three or four and join the all male units. Due to the difficulty of individual identification, however, whether females disperse between OMUs within the same band or whether females disperse between bands remains uncertain. In this study I use mitochondrial DNA (mtDNA) extracted from feces as a marker to explore the dispersal pattern of female R. roxellana. This study was conducted in Zhouzhi National Natural Reserve, China in 2008. We collected fecal samples from 20, 45, and 34 individuals from three neighboring bands (A, B, and C). We amplified the d-loop region of mtDNA. We found three haplotypes among the three bands. Haplotype a is found in all three bands with different frequencies [100%, 82%, and 18%]. Within band B, haplotype c can be found in four out of eleven different OMUs. This distribution pattern suggests that R. roxellana females not only disperse between OMUs but also between different bands, which is different from other Asian Colobines.