Skip to content

Stress in wild female Assamese macaques

Research Report

Screen Shot 2016-06-01 at 12.03.52 PM

Julia Ostner

University of Göttingen

Researchers have been performing daily focal observations and fecal sampling on this study group of habituated Assamese macaques in Thailand’s Phu Khieo Wildlife Sanctuary since October 2006.  For her investigation of ecological, social and reproductive stress in female macaques, Julia Ostner used data collected between September 2007 and February 2009. This time period included two events that resulted in periods of marked social instability for the group, the death of an adult female and later that year the death of an alpha-male at the hands of co-resident males.

In the report below Ostner summarizes her team’s progress in disentangling the sources of physiological stress and their effects on female primates.

Full report:

Screen Shot 2016-06-01 at 12.03.39 PM Screen Shot 2016-06-01 at 12.04.04 PM

Female Assamese macaque


Screen Shot 2016-06-01 at 12.04.17 PM

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

I [name], of [city, state ZIP], bequeath the sum of $[ ] or [ ] percent of my estate to L.S.B. Leakey Foundation for Research Related to Man’s Origins, Behavior & Survival, (dba The Leakey Foundation), a nonprofit organization with a business address of 1003B O’Reilly Avenue, San Francisco, CA 94129 and a tax identification number 95-2536475 for its unrestricted use and purpose.

If you have questions, please contact Sharal Camisa Smith sharal at 

This will close in 0 seconds