Abstract # 69:

Scheduled for Thursday, August 17, 2006 07:00 PM-09:00 PM: Session 8 (Regency West 1/3 ) Poster Presentation

The effects of hunting on a primate community in the Peruvian Amazon

J. Chism1 and H. M. Matthews1,2
1Winthrop University, Department of Biology, Rock Hill, South Carolina 29733, USA, 2Culture and Heritage Museums
     Rainforest habitat in and around the Reserva Communal Tamshiyacu-Tahuayo (RCTT) in Northeastern Peru is home to thirteen species of diurnal primates, including the threatened red uakari (Cacajao calvus). To estimate primate density and biomass we conducted transect surveys (transect effort=297 km) in June and July 2005 at two sites in and near the RCTT along the Quebrada Blanco. We used these estimates to examine the effects of hunting on the primates in this region by comparing density and biomass data from heavily hunted and rarely hunted sites with that from two other primate surveys in the region. Comparison of estimates from the present study with a 1993 survey along the Quebrada Blanco showed little decline in the primate populations over time (T=80, n=9, NS), despite persistent hunting pressure. A second comparison between the present study and a 2003 survey of primate populations in a less-hunted region along the Yavari Mirin river showed higher densities in the Yavari region, particularly of large-bodied primates, although the differences did not reach significance (T=92, n=9, NS). It appears that levels of hunting in the past twelve years along the Quebrada Blanco may be sustainable and the less-hunted area of the along the Yavari may act as a source for the more persistently hunted sink areas of the Blanco region as predicted by the source-sink model (Novaro et al., 2000).